ULS. Patent Na 1622,683 CONTINENTAL SYSTEM SUPERIOR CABLE WSHA AMD EQUIPMEIMT Dl VISIOIVI P. 0. Box 489 Hickory, North Carolina 28601 Phone 704/328-2171 A SUPERIOR CONTINENTAL COMPANY Circle 159 on reader service card Here are eleven reasons why you should buy the Alston 80152-4 Traffic Scanner. PROFITABILITY. Eliminates manual meter readings. Reduces iabor costs significantiy. QUICK DELIVERY. Supplied off-the shelf. Now. .. m SOLID STATE ELECTRONICS, Contains aii eiectronics on plug-in printed circuit boards to give troubie-free operation. Features solid-state timing for exceptional accuracy. PRINTED OUTPUT. Controls up to four moduprinters which provide 24 print-out registers pius a time-of day print-out. UNATTENDED OPERATiON. Pre programs for unattended 14-day operation with accessory 14-day clock. LARGE INPUT CAPACITY. Collects busy information from up to 250 C or sieeve ieads in groups of ten or multiples of ten, mmii , 0 0 0 '*fll|r0.0.0 ' -0' .0irir wrw 0 0 0"> 0 ir tjAn HiiiliHllii ffnTCvf itnil tIHIIHI REGULATED VOLTAGE. Uses 5-volt regulator circuit. Isolates scanner from line transients and varied office battery voltage. PEG COUNTING. Collects peg count data, scanned data, or a share of each. EASY INSTALLATION. Arrives essentially ready to go. Installs in minutes when used with C lead patch panels. Requires minimal training to operate. VERSATILITY. Prints out each 15, 30 or 60 minutes. Programs to reset or accumulate after each print-out. Has 60 or 100 second scanning cycle. PORTABILITY. Weighs only 27 pounds. Measures a compact 17" x 21" x 714" in aluminum carrying case. \bull find reasons twelve and up in the Model 80152-4 brochure. 1724 South Mountain Avenue ALSTON DIVISION Duarte, Caiif. 91010 Teiephone; (213) 357-2121 CONRAC COR POR ATION The Leader in the Manufacture of Traffic Measuring Systems, from Portabie Equipment to Computer Controlled Permanent Installations Circle 101 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 1 Ceecos special combination of components in one case will save time and why buy two when one will do? The next time the improvement of your circuits require two or more different types of components, order a special combination case from CEECO. The initial savings in case cost and the additional savings in installation will be considerable. * Special combinations of Build-Out Capacitors and Resistors; Coils and Capacitors; or two or more types of loading coils. ORDERING INFORMATION ON REQUEST OR CONSULT OUR CATALOG for high qualify transmission components and accessories COMMUNICATION EQUIPMENT & ENGINEERING COMPANY, 5646 West Race Avenue, Chicago, Illinois 60644 Telephone: Chicago Area Code 312, 378-3109 Circle 102 on reader service card 2 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 ENGINEER & MANAGEMENT THE TELEPHONE INDUSTRY MAGAZINE JANUARY 1, 1972 VOLUME 76, NO. 1 A HARCOURT BRACE JOVANOVICH PUBLICATION Installer-Repairman Bob Cannon entertains Dana Edwards, 3, and Sue Westmoreland while Mrs. Pat Edwards places a call in Standard Telephones Bavarian-style coin booth. The telephone company participated in the renovation of Heien, Georgia, aiong the alpine theme. Cannon is also the proud driver of Standard's first truck using the USITA logo and new white, orange and blue color design. (Photo by Cameron Studio, Corneiia, Ga.) PUBLISHER John G. Reynolds EDITOR & ASSISTANT PUBLISHER Ray H. Smith MANAGING EDITOR Donald L. Wiley PUBLISHING CONSULTANT Bruce B. Howat TECHNICAL EDITOR John S. Reed ASSISTANT EDITOR Karen Will EDITORIAL ASSISTANTS Caryl Fox Dorathy Sietsema WASHINGTON EDITORS Fred Henck Tom Malia CONTRIBUTING EDITORS Warren G. Bender Bill Corman David I. Gilman D. A. (Al) Perigo CIRCULATION MANAGER James L. Johnson MARKETING SERVICES DIRECTOR Edward Crowell See page 56 for a complete listing of the business office staff. TE&M, the telephone industry magazine, has been published since 1909. It is edited for the administrative executives in every department of the operating tele- phone industry . . . management en- gineering, plant-installation, maintenance and operating, commercial, marketing, traffic and accounting. TELEPHONE ENGINEER & MAN- AGEMENT is published on the 1st and 15th of each month by Har- court Brace Jovanovich Publications, a subsidiary of Harcourt Brace Jo- vanovich, Inc., 402 West Liberty Drive, Wheaton, Illinois 60187. Ad- i i dress all correspondence to Wheaton address. Telephone; Area Code 312- 653-4040. Printed at: 800 North Court ' St., Pontiac, Illinois. Second class post- age paid at Wheaton, Illinois and at ad- ditional offices. Subscriptions: U.S.A. and possessions, $6.00 per year; Canada, $7.50: in all other countries, $10.00. Single copies: 75 cents in the U.S. and Canada; all other countries, $2.00. Copyright 1972 by Harcourt Brace Jovanovich, Inc., 402 West Liberty Drive, Wheaton, Illinois 60187. POSTMASTER: Please send form 3579 to TELEPHONE ENGINEER & MANAGEMENT, 402 West Liberty Drive, Weaton, Illinois 60287. 6 EDITORIAL: A Thought for the New Year by John G. Reynolds 9 OBSERVATIONS: Gold in Central Florida by Ray Smith 10 WASHINGTON REPORT: Bell Discrimination Charges by Henck/Malia 14 MANAGEMENT NOTES: Thats a Lot of Money by Don Wiley 16 NEWS: Industry: Bank Board Approves Stock Issue Regulatory: Court Annuls Fast Depreciation Ruling Mergers: Allied, Echo Telephone Agree on Merger 22 CONVENTIONS AND MEETINGS: Whats happening and where 25 STANDARD TELEPHONES PROGRAM FOR SURVIVAL by Ray H. Smith Short on capital but long on good management and morale, a Georgia Independent is out looking for new ways to serve its customersprofitably. 34 WHITE PAGES EDITORS IMPROVE USEFULNESS OF DIRECTORIES Coordinating suggestions from both employees and customers produces a better bookand fewer DA calls. 36 DISTORTION AND ITS EFFECT by Ralph E. Willey Part Two of this series explores the various types of distortion attenuation, phase and non-linearand their characteristics. 41 AMITA APPROVES MERGER FOR EXHIBIT PURPOSES by John G. Reynolds Highlights of the 1971 Alabama-Mississippi Independent Telephone Convention. 43 PLANT/ENGINEERING: Electronic EPABX Uses TDM by John S. Reed 45 NEW LITERATURE: Useful information from the manufacturers 46 NEW PRODUCTS: The latest telephone equipment from the suppliers 52 PEOPLE IN THE NEWS: Moving toward the top 53 PROFESSIONAL SERVICES; Guide to the leading organizations 54 MARKET PLACE: Find it fast in TE&Ms popular classified section 56 READER SERVICE INFORMATION: Complete listings 57 READER SERVICE CARDS: The easy way to obtain free information JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 3 First total utilization cable for T-1 PCM carrier systems Plus-2, Anacondas new telecommunications cable with two compartments and t^ extra pairs! One extra pair: Repeater Interrogation One extra pair: Voice Order Wire With Plus-2 you obtain total utilization from single cable installations First, because the electrical isolation between the two compartments permits 100% cable fill with maximum repeater spacing, and Second, because the cable provides enough pairs to insure that every repeater housing space can be utilized, regardless of whose equipment is installed. I- L: . ;.-'4->.''.' #;; iS; T.; And, Plus-2 provides excellent near-end crosstalk performance, extended repeater spacing , , , all the way up to 32 dB, and 100% carrier fill. Plus-2 is available as filled and non-filled cables in all Anaconda communications cable constructions. So, get the total utilization cable. Ask the Man from Anaconda about Plus-2, the telecommunications cable with ty^ compartments and two extra pairs. Anaconda Wire and Cable Company, Communications Division, 6405 Metcalf Avenue, Overland Park, Kansas 66202. Circle 105 on reader service card ASK THE .MAN FROM AnacondA* ABOUT PLUS-2 71216 Editorial A Thought For the New Year More and more as we move along from day to day we realize that it is a blessing to all of us that time is divided into two periods, and especially that it is divided into years. Mentally, at least, on New Years Day we can close the book of the old year with its mistakes and troubles and open up a new book for the new year. The traditional end-of-the-year wish for a prosperous New Year is a fitting one for any industry, business or individual. But as we have learned from past experi- ence, more than good wishes are required to make prosperity. This is especially true in the telephone business where a prosperous 1972 is hoped for, despite the problems and challenges that are facing the industry as it begins the new year. We will admit the telephone industry has growth rates it can be proud of. Ac- cording to the TEirM Market Research Department, U.S. telephones in service have increased from 63.9 million in 1957 to 125.7 million at the end of 1971 for a gain of 88.6 percent. During the same period, the telephone industrys investment in plant has soared up from $22.5 billion to |76.3 billion, for a 206 percent increase, and gross operating revenues have gone from $7.2 billion to $22.1 billion, for a gain of 181 percent. In our book, thats staggering growth for an industry with regulated rates, faced with continuing demands for new and improved services and forced to cope with such problems as inflation, regulation and competition. However, our book and the books the public keep are not the same, and therein lies a worrisome difference that we believe must receive more industry attention during 1972. It is not enough for telephone people to know that telephone companies like other businesses have been hit and hit hard by inflation and that a fair return on telephone company service facilities is essential to each telcos ability to meet all service demands. Certainly, as we have said before on this page, one of the big jobs of today and tomorrow is to obtain the publics understanding of the need for increased rates and improved earnings. Today, hundreds of telephone exchanges are trying to get along on rates and earnings that are insufficient in todays inflationary economy. In many, many places, rates for telephone service have not been increased for over 20 years, despite the fact that costs of telephone company operations are the high- est ever known. We know, and you know, that no telephone company can long be prosperous and continue to effectively serve the needs of its subscribers if it continues collect- ing for its services on the rates of bygone days, and paying its expenses on the level of todays operating costs. But, the evidence plainly indicates that many telco customers do not understand such facts of telephone life. To create such understanding appears to be one of the main jobs ahead for the telephone industry in 1972. If the job is done promptly and correctly, perhaps a telco customer will soon realize that if he paid his telco in dollars that had the same purchasing power as 1953 dollars, many rate adjustments would be unneces- sary. Thats one fact telco customers fail to recognize. 6 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Stop. Tnlcea minute to look behind the new Lynch D2 Channel Bank. CHAN YO CHAN ia Its designed to save you a lot of time and trouble* The Lynch B320 D2 Channel Bank is human-engineered to simplify your maintenance and operations. Its built to be installed, operated and main- tained by people. Quickly and easily. Thats why Lynch put as much thought into the layout and design of the back of the B320 as into the front. The extended wire-wrap pins with silk- screen overlays identify all positions and strapping options. The result is simplified installation and less labor re- quired for operations and maintenance. Up front, maintenance has been sig- nificantly reduced by elimination of field adjustments in the common equipment. Channel units are equipped with a busy indicating lamp and individual make- busy switch. Line up and testing of the system is simplified by using a digital signal generator located in the auxiliary shelf. The B320 has its own carrier group alarm function built in. The span line power source and terminating assembly are integrated into the termi- nal common equipment along with sig- naling options to fit your requirements. It works with T1 repeatered lines and is Circle 108 on reader service card designed forall classes of switched tele- phone trunks. Exchange. Intertoll. Toll. The Lynch B320 17V2" D2 Channel Bank. It can save you a lot of time and trouble. In more ways than one. No matter which side you see it from. For complete information contact your man from Lynch. Total PCM For Voice and Data Lynch Communication Systems 691 Bryant Street San Francisco, California 94107 8 1 TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Observations by Ray Smith Gold in Central Florida Building a city takes forever. Look at New York. It still isnt finished. Paris is still being built 200 years after its plans were laid. Athens is still shaping up after 2000 years. The words arent particularly pro- found but coming from a chap named Steve Roth, they probably sound like deathless prose to Florida Telephone Corporation and General Telephone of Florida. As if both utilities dont already have their hands full with growtli problems (FTC has Disney World), Roth is the director of planning for GAC Properties, Inc., developer of a new city called Poinciana on a 47,- 000-acre tract and projected for 250,- 000 residents within 10 years. According to Max Wettstein, presi- dent of Florida Tel, all of the initial construction and next few years will be in FTC territory (screened area in map). Its been several years now since a close observer of the scene was calling his friends to advise them to buy Flor- ida Tel stock not as you might think, for the long-pull, but because they were a likely target for merger. None of that has happened and with the way Florida Tel stock is held, it fig- ures to be politically almost impos- sible for anyone who might even be in a position to take on the giant-sized capital requirements this company faces to wrest or negotiate control. So that leaves Poinciana right squarely in the hands of Wettstein, Claude Locke and the same team who found themselves a few years back Beelin WSN.EV- WORLO LAKE CO. ORANGE CO. t OSCEOLA C( POLK CO. OAVEN- PO^ HAINES cirvr llAKE V. HAMILTON' DUNDEE staring at Disney World suddenly in their playpen. And theyre not being shy about saying they expect to play an important role in establishing a new modern telephone system for a substantial part of this great new de- velopment. Independents Must Adapt Some years ago, began Joe Gallo- way, when I was a freshman at col- lege, we were shuffling around in the auditorium, confused in finding our proper seating. Finally the Dean rapped on the rostrum and said: Gen- tlemen, the test of intefiigence is adaptability to a new environment. We found our seats quickly. I think we in the Independent telephone in- dustry are also having our intelligence tested in a new environment. The chairman of Winter Park Tele- phone Company and second vice pres- ident of the USITA then went on to the heart of his speech at the recent Florida Telephone Association con- vention, which was reported in TEh-Ms December 15 issue. The points made regarding yet-to-be-re- solved FCC and other regulatory de- cisions affecting the telephone indus- try were among the most perceptive we heard in 1971 and if you missed seeing the article, go back and look it up or circle 539 and well send you a copy. Who Wants Dial Phones? Not the residents of Virginia City, Nevada who are complaining about Nevada Bells program to change out the old mining towns magneto system to dial by 1973. The local newspaper says that the crank type phones are an integral part of history of the Bell System as well as of the Comstock Lode. It seems outrage- ous that a company that helped create communications history in Ne- vada would destroy what is so obvi- ously an asset to them, says Pub- lisher Johnny Gunn. One has to wonder, however, how much of the thunder was drummed up after the customers learned that contrary to what some believed, the dial phones would not bring lower rates. (But neither will the rates go up.) BURY 225 LOAD COILS ABOVE GROUND! Nothing strange about that. Nor the 4-5 hundred dollars you save by not using buried cases. Look at it this way: if youre going to use an RE-5 pedestal, why not use the space inside for loading? That way you com- pletely eliminate the high cost of excavation . . . labor and equipment. Instead you gain ready-access convenience to add or to serv- ice the installation at some other time. Again, no excavation. COIL SALES patented modu- lar construction permits you to interchange load coils, BOCs, lattice networks, saturable in- ductors, junction impedance compensators and lightning ar- restors. Snap in. Snap out. Call or write now to get the full details on eliminating the high cost of burial. Circle 109 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT 1 9 Washington Report by Fred Henck and Tom Malia EEOC Filing Charges Bell System Discrimination What must have been the most prodi- gious initial case in regulatory hearing was carried, in large boxes, to the FCC, when the Equal Employment Opportunity Commission unveiled the details of its charges that AT&T and Bell System companies have engaged in widespread employment discrimi- nation. EEOC distributed to parties to the FCC hearing case a presentation amounting to about 2500 pages, and backed it up by making available to serious students some 20,000 pages of material obtained from interrogatories to the Bell System companies and its own files. Hearings before FCC Examiner Frederick W. Denniston are due to begin January 31, and presumably will be devoted for a while to argu- ments about the admissibility of por- tions of the seven main exhibits of- fered by EEOC. The FCC probably is on its way to one of its longer and more complex proceedings, if for no other reason than the fact that EEOC distributed direct testimony of 17 wit- nesses, totaling some 500 pages. There are, in addition, a number of other parties to the case, and testimony of other witnesses is to come later in ses- sions on the West Coast. Lost in the welter of pre-hearing publicity, after EEOC distributed a 300-plus page summary of its case to the press, was the fact that the FCC Common Carrier Bureau staff also offered extensive direct testimony by two witnessesprominent econo- mist Robert R. Nathan, and Dr. Bar- bara R. Bergmann, who heads the University of Marylands project on the economics of discrimination. The newspaper stories were based on the EEOC snmmary, prepared by EEOC Attorneys David Copus and Lawrence Gartner, which Denniston described as a brief in advance. Al- though it was offered as an exhibit, Denniston agreed with AT&T General Attorney George E. Ashley that a counsel exhibit could not be consid- ered as evidence. The statement charged the Bell Sys- tem with being without doubt the largest oppressor of women workers in the United States. Although there were substantial sections in the sum- mary regarding employment of blacks and Spanish-surnamed Americans, well over half of the volume was di- rected at the claimed systematic sexist treatment of the Bell Systems 524,000 women employees. AT&T Executive Vice President Robert D. Lilley replied that the facts suggest that the telephone com- panies are a good place of employ- ment for women as well as minority people. We believe the facts of the case, as they evolve, will also show that many of the specific kinds of allega- tions made against us are ancient his- tory, long since mooted by changes weve already made. For example, pension options are now identical for women and men. Similarly, women may, if they wish, seek employment or ask to be transferred into crafts which have heretofore been considered male Many (of the EEOCs) allegations . . . are ancient history, long mooted by changes: AT&Ts Lilley jobs. Also, wage zone differentials which the EEOC has considered dis- criminatory have now largely been eliminated through new collective bar- gaining agreements. Lilley declared that Already, we have 7500 minority people in manage- ment jobs. Not enoughbut we are making good headway. That is more than double the number of three years ago. We now have 524,000 women on the payroll. Thats about 55 per cent of our total employees. Presently, about one in three of our management jobs is held by women57,000 in all. And last year alone, more than 8000 womena record numberearned promotions into and within manage- ment in the telephone companies. Most of these are in lower levels of management; we need more in higher levels and plan to have them. This is not a dismal picture. Nathan, who noted that his organi- zation has done work on several oc- casions for both Bell System compan- ies and the Communications Workers of America, and thus has more than a passing familiarity with the tele- phone industry, reviewed in depth the AAPs (affirmative action plans) of Bell System companies intended to combat employment discrimination. He said the documents show a substantial lack of uniformity, but are alike in only one general and im- portant sense: each expresses a strong intent to provide equal opportunity to all employees and applicants regard- less of minority status or sex. Dr. Bergmann took the position that Research by a number of eco- nomists has indicated that firms that are sheltered from competition tend to discriminate more than firms that are subject to the full force of com- petition ... It is incumbent on the (FCC), in whose hands the regula- tory power has been placed, to insure that the fact of that regulation not be permissive of discrimination, which is outlawed by federal statute. Basic to EEOCs contention was the view that the operators job is the least desirable major job in the Sys- tem, largely because of the extremely undesirable working conditions. Con- sequently, turnover rates among op- erators are quite high . . . The high turnover significantly magnifies re- cruiting and training costs. Another section of the summary continued, While the majority of the employees in the Bell System are fe- male, almost all jobs in the company are sex-segregated . . . Male jobs in- variably pay more, are more reward- ing and provide greater promotional opportunities than female jobs. EEOC took the position that Bell Sys- tem jobs were just about as segre- gated in 1971 as they were in 1965, when the Equal Employment Act was passed by Congress. Further, the filing said, Promotion from female jobs to male jobs or vice versa is severely inhibited by a number of obstacles including the de- liberate obfuscation of opportunities and procedures, the maintenance of sex-segregated lines of progression. Continued on page 12 10 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Your directory may not be big in size, but it is in importance to you. So we give it our best. Everything from trained salesmen and management teams to computerized data. We make sure everything runs well because if its your business, theres nothing small about it. So in addition to maximum advertising revenue, we give you a little extra. We call it Berry Care. L. M. Berry and Co. Post Office Box 6000 Dayton, Ohio 45401 513 298-4311 JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 11 RECYCLE for a FRACTION of the cost of new telephone equipment through tELE-COLOGY by TELESERVICE *Before it was fashionable we were practicing ecology, that is, pioneering the trend toward recycling instead of junking; re- conditioning to a like-new con- dition at a small fraction of the cost of new equipment . . . about 1/3 the cost on the aver- age. Why Choose Us? We are specialists. It is our only business. We employ skilled technicians, mass pro- duction and test facilities for service on the following: Telephone Instruments Pay Stations Key Phones Dials Ringers P.C. Cards Special Telephone Equipment (electronic answering de- vices, power supplies, test phones, etc.) Pickup-Delivery Service on a Regular-Schedule Basis Smile or write TELE SERVICE (A subsidiary of Cook Electric Co.) P.O. Box 193 Kevil, Ky. 42053 Phone: (502) 462-3132 1410 Bryant Leesburg, Fla. 32748 Phone: (904) 787-3838 Circle t12 on reader service card 12 I TELEPHONE ENGINEER & MANAGEMENT, WASHINGTON continued departmental seniority (which is tan- tamount to sex-group seniority), pro- visions restricting transfers and un- reachable promotion standards . . . Unreasonable and discriminatory ma- ternity leave provisions further re- strict the opportunities of female em- ployees. It went on to comment that Bell has at long last recognized the extent of the discrimination it practices against women in management and the definite urgency regarding change in this area. But a concerted and dra- matic effort is required. EEOC con- cluded that women in the 30 metro- politan areas on which its statistical study in the case was based, because they ate not distributed equitably through the whole range of available jobs, (they) lose $422,000,000 every year. Nationwide in the Bell System, women lose $950,000,000 annually. Tax Credit Amendments Senate amendments relating to com- munications in the new tax legislation, providing a 4 percent investment in- centive tax credit for most public utili- ties, have been generally accepted by joint House-Senate conferees on the measure. In the section of the report on public utility property, the con- ferees noted that included among the utilities authorized the 4 percent credit, instead of the 7 percent ap- plied to industry in general, are reg- ulated telephone companies and do- mestic telegraph companies. The bill as passed by the House extended this limitation to regulated internal tele- graph companies and other regulated companies providing communication services. (The) Senate amendment restored international telegraph companies to their status under prior lawthe 7 percent tax creditbut extended the definition of pubhc utility property to include communication property of any taxpayer if it is of the type used by persons engaged in providing regu- lated telephone or microwave commu- nication services and if the taxpayer uses the property predominantly for communication purposes. It was noted that, in connection with treatment of the investment credit for ratemaking purposes, the Senate adopted the basic structure of the House provision with several changes. The basic structure, it was explained, provided three elective op- tions, the third of which applies only to companies which already have been flowing through accelerated de- preciation tax benefits. JANUARY 1, 1972 All regulated companies, it was pointed out, must choose between op- tions (1) and (2) within 90 days after enactment of the bill. They are (1) the credit may not be flowed through to income but may be used to reduce the rate baseprovided that this rate base reduction is restored not less rap- idly than ratably over the useful fife of the property; (2) the credit may be flowed through to incomebut not more rapidly than ratably over the useful fife of the propertyand there must not be any adjustment to reduce the rate base. Nixon Nominates Wiley to FCC To no ones surprise, Richard E. Wi- ley, general counsel of the FCC, was nominated by President Nixon to be a member of the FCC. Wiley was named to the term vacated by Robert Wells, who resigned, for seven years beginning July 1, 1970. It had been reported earlier that Wileys nomination would be sent to the Senate before the adjomnment of this session of Congress although there is no expectation of immediate action. As it now stands Wiley will be given a recess appointment after adjournment, and the move permits him to be paid during the interim. His nomination then is to be sent to the Senate within 40 days after Con- gress reconvenes in January. Presum- ably, this will allow time to select a black Democrat to succeed Commis- sioner Robert T. Bartley, whose term expires June 30. Bartley is not seeking reappointment, and there have been reports he will retire in the spring. Preston Trucking Comments The controversial proposal of the Pres- ton (Md.) Trucking Co. to establish a major shared motor carrier private microwave system from the Buffalo, N. Y., area to Philadelphia, and on to Washington, was laid before the FCC after a number of interested organiza- tions filed reply comments. Views outlined, in response to the initial statements in the inquiry, again pointed up the basic positions of the opponents and supporters of the plan, which the opponents helieve should be considered a common carrier oper- ation. Representing another group of eli- gible shared private microwave users, the Central Committee on Communi- cation Facilities of the American Pe- troleum Institute again leveled some of the heaviest fire against the Preston proposal. Recalling the Preston com- ment that, with the demise of shared telpak, the motor carrier industry will provide the potential market for Preston-type systems, API asked what of the multitude of other bulk users who may be unable to share tel- pak facilities in the future? It said it can find no reason to ex- pect that these communications users, among others, will not also present an attractive potential market for third party entrepreneur arrangements. We must therefore reiterate our view that the potential for growth in third par- ty entrepreneur arrangements is so great that the authorization of such arrangements on an across-the-board basis would create a very unhealthy situationboth in terms of private spectrum availability and the econom- ic viability of communications com- mon carriers. Taking issue with Prestons com- ments that the profit issue is not in- volved, AT&T declared that On the contrary, there is a profit being made on communications services under a schedule of charges related to use which the customer is free to take or refuse on relatively short notice (cus- tomer private line services). While Preston and TMC characterize this as a lease of facilities, it is an extraor- dinary lease where the lease is trim- able at will and the rent is not related to the facilities furnished, but only the use made of them. The initial Preston comments, the U.S. Independent Telephone Associa- tion observed, bring into sharp focus the single issue now before the Com- mission. Preston . . . concedes that its primary interest and concern is mini- mizing its expenditures for private line communications service. TMC . . . would undertake to finance and furnish private line service to Preston and others, in the expectation of real- izing a profit. The sole issue, then, is whether an independent entrepreneur may pro- vide leased private line communica- tions services to users without being subject to common regulation by the Commission. Answering/Recording Standards Representatives of common carriers and manufacturers of telephone an- swering and recording devices agreed have to consider possible participation in an effort to generate technical stan- dards for those devices similar to the ones being developed for private branch exchange switchboards. At a nearly all-day meeting at the FCC, they agreed to provide written views on whether they would be will- ing to engage in such a program; bow it would relate to the current PBX in- dustry advisory committee to the FCC; and what kind of mechanism should be set up for any such endeav- or. ALL YOU NEED TO KNOW ABOUT PHASE JITTER The HLl family of SIX Phase Jitter Meters offers you a wide range of instruments to meet your measurement requirements. All are simple to operate, have complete level metering, and five have a built in phase stable transmit test tone source. And, there is no need to pay for operating modes which con- fuse channel noise, spurious signals and T carrier quantizing noise with phase jitter. Take the Model 56for example. This compact unit is designed to Bell System specifications and measures peak-to-peak phase jitter on 3 and 30 full scale ranges. It accepts conventional and T carrier test frequencies and operates with input levels of -40 to +10 dBm. It has provisions for line hold and dial thru and has a CAUTION light to warn of incorrect input levels or frequencies. It can also be used in making noise free frequency offset measurements and has a built in level meter. Now where else can you buy a unit with all those features for $965.00 in unit quantities? Our free Applications Note No. 4 presents a factual discussion of the relationship of channel noise and T carrier quantizing noise to the measurement of phase jitter. Write for it, you will find it timely and informative. HEKIMIAN LABORATORIES INC. 322 N. STONESTREET AVENUE ROCKVILLE, MARYLAND 20850 TELEPHONE (301) 424-3160 Circle 113 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT | 13 Management Notes by Don Wiley Thats a Lot of Money Theres no two ways about it, $166 million is a lot to ask for in a rate in- crease, and, naturally, since Ohio Bell asked for that much last August, it has found itself the target of such custo- mer remarks as Its an attempt to gouge the public. As nearly all companies do, Ohio Bell substantiates its case with well-reasoned testimony and docu- mented exhibits. But heres where many companys fall down on the job; they forget to fully inform their best goodwill ambassadorsthe em- ployees. Every employee at one time or another finds himself in a position to explode misconceptions and mis- understandings that friends, neighbors and relatives have about why the tele- phone company needsor doesnt needanother rate increase. In a special 32-page edition of the companys employee magazine, per- spective, Ohio Bell has done a tremen- dous job of compiling facts about the rate increase application so that all employees taking time to read it will be in a better position to support the companys request. Rather than sim- ply state the facts alone, the company conducted a poll of 850 employees selected at random throughout the state, asking them about their feelings on service in general, the rate struc- ture, the profit record and other issues that might come up in a rate case. This information was then used as a basis for the presentation. The issue includes: an interview with Charles K. Esler, vice president, rates and revenues; how much local rates will be increased; why there isnt one local service rate for all ex- changes; how EAS will be affected; foreign exchange rates; the reasons for higher service connection and non- published number charges; an ex- planation of the tax adjustment clause; commissions on pay phones; long dis- tance rates; legal steps in a rate case; and, for those with a need to know more, a tear-out form for specific questions. One last touch is a small, pull-out card that can be used as a handy, quick reference on present and proposed local rates. In short, the issue is a well-thought- out presentation that gives every company employee the proper an- swers they need to present the com- panys rate case where it countswith the bill-paying public. Black ESS Project Completed Despite opposition by some unions and the refusal of contractors to bid on the job, which had to be awarded on a cost-plus basis, construction has been completed on a $3.5 million ESS office for New Jersey Bell at Newark. The problem had centered around the work force, which consisted of 70 per- cent black workmen. Company Building Engineer Rob- ert Gardner said, We were told wed never get enough skilled black work- ers in this city to do the job and wed have to train them brick by brick and board by board, but the project worked out very well. The concept for such a project came from Robert D. Lilley, then New Jersey Bell president, and now AT&T executive vice president. Lilley had been head of the Governors Com- mission on Civil Disorders, which, in investigating the 1967 Newark riots, concluded that a lack of job opportun- ities for the citys predominantly black population was a prime cause of the riots. Lilley formally proposed the pro- ject in a 1969 letter to the Master Builders Association, but met with negative reactions and feelings that the project would be doomed by union opposition. It finally took a black general superintendent of one contracting firm and a government in- vestigation of charges of budding trade union discrimination on another project to get the program started. Now, despite union foot-dragging and attempts to stage a walk-off, the building was completed on time and in line with original cost estimates. Off-the-Job Accidents Rising With the ratio of off-the-job deaths to on-the-job deaths at almost three-to- one and the number of off-the-job in- juries reaching 3.2 mdlion annually, company safety supervisors have found that creating campaigns to pre- vent accidents away from work as a great a challenge as building a good on-the-job saftey program. A 30-page booklet called Ideas in ActionPromoting Off-the-job Safety is available from the National Safety Council to show what other businesses have done in dealing with the prob- lem in an attempt to spark the imagin- ation and trigger new ideas. Intended as an idea book rather than a source for complete, ready-to-use safety pro- grams, the booklet conveniently groups the activities described accord- ing to their suitability for company- wide, traffic safety, home safety and public safety programs. Copies of the Ideas in Action book- let, stock number 194.01, are avail- able from the National Safety Council, Dept. TEM, 425 N. Michigan Ave., Chicago, 111. 60611. Prices are 88 cents per single copy; 58 cents each for between 10 and 99 copies; and 50 cents for 100 or more. Continental Award Program A Merit Award of Service to honor employees whose actions directly re- sult in saving the life of another in- dividual has been established by Continental Telephone Corp. The award plaque reads: In recog- nition of outstanding service to his fellow man . . . No award can be enough for saving a life . . . Yet no reward could be greater than accom- plishment of the deed alone. In addition to the personally in- scribed plaque, the merit award in- cludes a $100 U.S. Savings Bond. Management Trainers Guide A free, 15-page trainers guide, enti- tled Modular Management Program No. I, explores the principles of man- agerial roles and goals by breaking down the topic into four specific are- as: performance appraisal, delegation, decision-making and group problem solving. Each chapter is designed to link the subject matter to four 16mm films produced by Roundtable Films. For a copy of the booklet, write to Roundtable Films, Inc., 321 S. Bev- erly Hills, Calif. 90212. 14 1 TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Introducing the new 512 Series Key System with prewired power supply. Now you can give your subscribers large- capacity Key Service in a single unit. In our new 512 Series Key Service Unit, one wall-mounted cabinet (approximately 16" high, 26" wide and 10" deep) contains a 13-line cell, an interrupter and a power supply. You can also have it prewired with up to 18 station rotary dial intercom (thats the version shown above) or up to 19 station Tel-Touch* push-button dial Inter- com. All are completely factory wired. Installation is fast and easy. Incoming lines and station cable are simply brought to quick-connect terminals located behind the swing-out gate. Line cards and manual-intercom cards are plugged in as needed. The unit can be used to serve one large key system installation or several small installations. A full series of other Key Service units is also available to meet your needs. For full details on any of the above, please contact Marketing Director, ITT Telecommunications, Apparatus Department, Fulton Drive, Corinth, Mississippi 38834. (601)286-6921. *Reg. Trademark of ITT TTT Telecommunications Division Circle 115 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 15 ENGINEER Gi MANAGEMENT NEWS COMPILED BY THE TE&M NATIONAL NEWS STAFF JANUARY 1, 1972 INDUSTRY Bank Board Approves Stock Issue, Appoints Committees In anticipation of the Rural Tele- phone Bank boards vote to issue class B and C stock at the December 2 meeting, telephone companies as of that date had sent in $57,000 for class C stock. Class B stock is not on the market for sale, but is distributed in connection with bank loans. At the meeting, the board also named two committees. A Financing Planning Committee, which will study short and long-term credit needs, con- sists of Chairman LeRoy T. Carlson, Chicago, 111.; Harold G. Payne, Ex- port, Pa; and Glenn W. Bergland, Thompson, la. An Elections Commit- tee to study the procedures to be used for future elections of board members consists of Chairman B. Maynard Christenson, Irene, S.D.; Mrs. Jean Brandli, Pell City, Ala.; Willis F. Ward, Michigan PSC chairman; and David J. McKay, LaCrosse, Kan. The board also adopted a resolution authorizing Bank Governor David A. HamiTto develop loans on a case-by- case basis until standard forms have been agreed on. Also taken under con- sideration was a draft form for a mort- gage and security loan. An REA spokesman said there was a strong possibility for action on the loan form at the next meeting, February 10. Class C Stock Certificate No. 1 will go to the Tuolumne (Calif.) Tele- phone Co. The Chariton Valley Tele- phone Corp., Bucklin, Mo., has been listed as the first cooperative stock- holder. NTCAs 18th Annual Meeting Scheduled for January 12-14 Senator Harold Hughes (D., la.) will deliver the keynote address at the 18th annual meeting of the National Telephone Cooperative Association, which will be held January 12-14 at the Fountainebleau Hotel, Miami Beach, Fla., carrying the theme Ex- panding Horizons. Other featured speakers include FCC Commissioner Nicholas Johnson, REA Administrator David A. Hamil, Michigan PUC Chairman Willis Ward and Treasury Assistant Secretary John Nolan. General session speakers in- clude: GTE Labs Chief Dr. Lee L. Davenport; a speaker from the U.S. Department of Labor on the new Oc- cupational Health and Safety Law; and management consultant David Schmidt. Split sessions will be held on the first afternoon for managers and directors. Addressing the managers will be Robert F. Hanson and C. Fred Roth of AT&Ts B-I Relations Depart- ment. The directors will hear Dr. El- liot Thoreson, professor of business economics at Augustana College, Sioux Falls, S.D., and Ross E. Heller, NTCAs legislative representative. Survey Points Out Growth of Telecommunications Market In sharp contrast with other business areas, the telecommunications market continues to grow without cyclical fluctuations and with no signs of mar- ket saturation, while world shipments A 1000-page ADL study defines world telecommunications markets. Figures in circles represent percent of market share in 1970 and 1980. Vertical (dollar] scale is logarithmic. of communications equipment will double over the next seven years, ac- cording to a Worldwide Telecommun- ications Study compiled by the con- sulting firm of Arthur D. Little, Cam- bridge, Mass. The 1000-page report also states that, Worldwide, new capital invest- ment in telecommunications is at the level of $20 billion annually, domin- ated by North American plant growth, but the scene of action is shifting. In Europe, Japan and in many develop- ing nations, extremely rapid telecom- munications growth will occur as gov- ernments begin to provide greater financial autonomy for their telecom- munications carriers, recognize that telecommunications is a highly profi- table activity and attempt to catch up with a tremendous backlog of unful- filled demands for telephone service. Also contained in the study is an analysis of systems and technology, voice and data traffic growth and the organization and regulation of tele- communications, along with detailed coverage of satellite communications, CATV, digital data transmission and facsimile. Vansant Dugdale Appointed As USITA Advertising Agency The U.S. Independent Telephone As- sociation has retained Vansant Dug- dale of Baltimore and New York as its advertising agency and has com- missioned the firm to prepare a 1972 institutonal advertsing program that primarily focuses on the public alfairs aspects of the Independent telephone industrys expansion programs. Agen- cv Vice President William M. Dug- dale will supervise the account. 9000 Illinois Bell Phones Affected by Cable Break It took 300 Illinois Bell employees working around the clock over a weekend to repair one of the worst cable breaks in Chicago history after a soil engineering contractor ripped through 14 major subscriber and trunk cables in a conduit on the south- ern edge of downtown Chicago. Be- 16 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 cause the break occurred in an alley that was a maze of repaved concrete, steel foundation supports and high voltage underground power lines, the construction crew could dig only with hand tools. Among the 9000 phones affected were those of Western Union, the Board of Trade, the Federal Reserve Bank, Libbys and the Insurance Ex- change. Ohio Independent Has Only AUTO VON Switch in State Independent telephone companies have been growing at an accelerating rate in recent years, but one company The Benton Ridge (Ohio) Tele- phone Co.has seen its total valua- tion grow from $23,800 in 1955 to $4,560,000 last year. The major contributing factor was the award of an AUTOVON contract by the Defense Communications Agency The company, with 325 sub- scribers, is the smallest Independent company providing AUTOVON ser- vice. Known officially as the Toledo Junction, Ohio, Center, the site is the only one in Ohio. With only six em- ployees, the company has subcon- tracted Licom, a division of Litton Systems, Inc., to operate and maintain the switch on a round-the-clock basis. Wayne E. Deeds is AUTOVON man- ager for Benton Ridge Tel. Seven REA Loans to Provide First-Time Service for 3570 Seven new telephone loans totaling $6,923,000 have been approved by the Rural Electrification Administra- tion, and will be used to provide first- time service to 3570 subscribers and upgraded service for people already being served. Receiving the loans are: 3 Rivers Telephone Cooperative, Inc., Fail-field, Mont., $995,000; Fort Mill (S.C.) Telephone Co., $500,000; Wil- liston (S.C.) Telephone Co., $540,000; Arvig Telephone Co., Pequot Lakes, Minn., $1,414,000; Montrose Mutual Telephone Co., Dieterich, 111., $1,000- 000; Brookville Telephone Co., Ex- port, Pa., $960,000; and Gaudalupe Valley Telephone Cooperative, Inc., New Braunfels, Tex., $1,514,000. REGULATORY Supreme Court Annuls PUCs Fast Depreciation Ruling The California Public Utilities Com- mission is reopening the Pacific Tele- Continued on next page AUTOMATIC MESSAGE ACCOUIVTIlVG Magnetic tape recorders engineered by Bell Telephone Lab- oratories are manufactured by Cook Electric. As part of an Automatic Message Accounting System for toll telephone calls, this unit records both the calling number and called number, length of call and other pertinent billing informa- tion on computer compatible magnetic tape. A computer then prepares the subscriber's statement from this tape. extending the in electr communicat the link between the toll call and computer billing COOK ELECTRIC COOK ELECTRIC COMPANY, Morton Grove, Illinois 60053 312-774-2200 In Canada: Cook Electrocommunications of Canada, Ltd. Circle 117 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 17 NEWS continued phone Co. rate case in which it granted the company a $143 million annual increase earlier in the year [TE phone of Cahfornia to conduct a sur- vey during the third quarter of 1972 to compare its service with that of Pacific Telephone Co. General contends that a customer opinion survey could not measure the quality of service as well as other methods, and although the commis- sion staff agreed that analysis of ser- vice indices tends to be inherently a more reliable measure of service qual- ity than market surveys, the PUC order added that a second market sur- vey [one was conducted in the fall of 1969] could serve as an imprecise control on the indices. Pole Attachment Hearing Rescheduled for February 8 Any pre-hearing conference in the FCCs docket involving pole attach- ments for CATV systems will have to be formally and properly requested by January 13, FCC Examiner Charles J. Frederick ruled in cancel- ling a session that had been scheduled for November 29 to get an up-to-date report on settlement negotiations going on between the Bell System and the National Cable Television Associ- ation. Frederick ordered the new hearing to begin February 8. Rate Applications, Approvals Recent rate increase applications and approvals include the following; Indiana Bell has filed for a $12,- 800,000 increase in intrastate long dis- tance rates and for certain other items and equipment, but not for basic monthly service. Overall, the request is for about a 5 percent increase in revenues. In Vermont, the Public Board has approved a stipulation by New En- gland Telephone Co., public counsel, the state and the commission staff, calling for a $1,900,000 rate increase, principally from such optional ser- vices and intrastate toU calls. The Mississippi Public Service Commission, acting on a South Cen- tral Bell application for an additional $20,100,000, has authorized a $12,- 900.000 rate boost. With hearings still in progress on Michigan Bells request for a $59,- 700.000 rate increase, the state Public Service Commission has granted the company an $18 million interim in- crease, an increase of about 3.25 per- cent in intrastate revenues. AT&T has filed tariff changes with the FCC that will increase some of the charges for interstate private line telephone, private line teletypewriter and Telpak categories of service by approximately $36 million annually. NARUC, Washington UTC Ask Special Carrier Review The final order of the FCC in the : .' MEET THE BIG WHEEL for underground pulling]! Its large! This 24" diameter, lightweight cast aluminum wheel can handle standard size cable without fear of cable crimping or distorting. Whats more, sheave handles lead and synthetic sheath cable without danger of cable scarring or marring. Cable Sheave Model 424 features a 7 ton 360 safety swivel hook which anchors sheave...keeps it in line with cable...eliminates walk-out. Lifting bale provides easy handling and positioning. Model 424 measures 25%" O.D. x 6" wide, and has a 4" groove width. Groove depth is 2%". 2579 EAST 67TH STREET LONG BEACH, CALIF. 90805 (213) 633-0373, (213) 636-A600 Circle 118 on reader service card Switchboard & Panel NUMBERING AND LETTERING KIT Use for marking almost any type of background materials with non-fading, vivid, easy-to-read clean marking. Ideal for marking switchboard panels, junc- tion boxes, sub-assemblies, chassis, cables, wire, etc. Contents: Peg rubber stamps 3/4", 3/8", 1/4", 3/16", 1/8", A-Z Letters, Numbers & Symbols. Stamp repair sets. Fuse capacity stamps 3/8" and 3/16". Ink tubes for Vermillion, Yellow, Black, White. Inking plate, knife, brushes, cleaning fluid. Housed in sturdy steel carrying case. 12%" long x IVz' wide x 5" deep. No. N-2315 Complete Kit...........................$69.85 MADE IN U.S.A. Write Dept. A for Free Tele-Communications Tools Catalog ppccison TCLC-comMuriicrvriori TCOLs P. K. NEUSES, INC. BOX 100ARLINGTON HEIGHTS, ILLINOIS 60006 Circle 132 on reader service card 18 1 TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 specialized common carrier proceed- ing represents an abrupt reversal of long-standing FCC interpretation of the regulatory requirements of the Communications Act, and represents deregulation of an important and rapidly growing segment of interstate common carrier communications with- out Congressional consent, said the National Association of Regulatory Utility Commissioners. NARUC filed its expected petition to review the FCC order on the sub- ject with the U.S. Court of Appeals for the District of Columbia the day following similar action by the Wash- ington Utilities & Transportation Com- mission in the Ninth U.S. Court of Appeals in San Francisco. In addition to making the argument that the FCC action favors large users, NARUC declared that the FCC here ignores the basic economic precept that our national communications sys- tem is one system and that any rate reductions bestowed upon any seg- ment of users must be made up by the remaining users. New York Tel Furnishing Couplers for Areata PABX In a solution to an immediate prob- lem that is not to be construed as a precedent. New York Telephone Co. agreed to furnish CDS-type couplers to link a PBX switchboard furnished by Areata Communications, Inc., to a new office location of Chemtex, Inc., in Manhattan. The agreement, after New York Tel earlier had pointed out that its priority system during the plant employees strike prevented such new installa- tions, eliminated the immediate possi- bihty of FCC action. Earlier, it had been suggested, in the wake of a deadline for discontinuance of Chem- tex telephone service because Areata had hard-wired the PABX to New York Tel trunks, that the FCC Com- mon Carrier Bureau might ask all con- cerned to maintain the status quo un- til some solution for such controver- sies during the work stoppage could be found. RCA Satellite Application Amended to Double Capacity RCA Global Communications, Inc., and RCA Alaska Communications, Inc., have filed an amended applica- tion with the FCC, calling for the doubling of the domestic communica- tion satellite system proposed in early 1971. The new filing proposes that the number of transponders in the sys- tems satellites be increased from 12 to 24, and, as the result of an agreement with NASA, that augmented Thor- Delta rockets be used to launch the spacecraft. It was noted that the increased sys- tem capacity is designed to meet peak television requirements on weekends and to serve the communications needs of common carriers and private industry. Each transponder could han- dle a TV channel or 1000 voice chan- nels or a 34-megabit data stream. Unusual Business User Class Not Required Says PUC Staff There is no adequate factual basis at this time to warrant setting up a spe- cial class of unusual users of busi- ness telephone service, or to justify the filing of such a tarifiF, the Califor- nia Public Utilities Commission has been told by a special committee of its staff and other interested parties. The committee had been estab- lished as part of the general Pacific Telephone Co. rate proceeding, in a commission investigation into the ramifications of data exchange service, principally telephone service to time- sharing computer companies. The PUC may study voice and non-voice business usage which substantially dif- fers from average business usage, either in terms of holding time or vol- ume of messages. Consequently, the committee was set up to identify and consider the service and rate aspects of unusual business use. The report, based on a Pacific Tel study, indicated that time-sharing computer companies have a higher use per line than the average business customer. It did not show whether there are other classes of users that also substantially deviate from the average. Reporting the committees findings, PUC Attorney Richard Gra- velle said it was concluded that there is no emergency regarding unusual telephone use in California. MERGERS Allied Telephone Co., Little Rock, Ark., announced an agreement has been reached for the acquistion of Echo Telephone Co., Shepherdsville, Ky. Echo serves approximately 8000 telephones in a suburban area adjoin- ing Louisville, and reports that in re- cent years its telephones in service have grown at a compounded rate in Continued on next page JANUARY 1, 1972 The Shortest Distance between placing your order and delivery to you IS A QUICK CALL TO STS Anaconda Electronics; Benner Nauman; C. A. C.; Ceeco; C & D; Cook; Diamond; Essex; Ford in- dustries; General Machine; Gould; ITT Telephone Apparatus; Joslyn; Lorain Products; Lynch Communi- cation Systems; Mathias Klein; Okonite; Phelps-Dodge; Preformed Products; Reliable Electric Co.; Reynolds Aluminum; Rezolin; San- gamo Electric; Southwire; Supe- rior; Suttle; 3-M; Transcom Elec- tronics; U.S. Steel; Utility Products. SOUTHERN TELEPHONE SUPPLY COMPANY P. 0. Box 80375 Atlanta, Georgia 30341 New Southwest Regional Office 8808 Soverign Row Dallas, Texas 75247 (214) 631-5340 BRANCH OFFICE 8, WAREHOUSE 136 Cumberland P. O. Box 12142 Memphis, Tenn. 38112 (901) 324-6176 Circle 119 on reader service card TELEPHONE ENGINEER & MANAGEMENT I 19 NEWS continued excess of 12 percent per year. With the acquisition, the Allied System will serve approximately 98,000 tele- phones in a five-state area. Mid-Continent Telephone Corp. has applied to the Pennsylvania Public Utility Commission for authority to merge its six subsidiaries in the state into a single company to be named Mid-Penn Telephone' Corp. T. A. Weeter, Pennsylvania regional man- ager, has been named president of the new corporation, which will serve more than 135,000 telephones. Frontier Telephone Co. has acquired the Bena (Minn.) Telephone Co. from shareholders Melvin and Marcella Mettler for an undisclosed amount, following the approval of the state Public Service Commission. Bena Tel serves approximately 90 stations. Burnup & Sims Inc., West Palm Beach, Fla., has acquired all of the outstanding shares of capital stock of David R. Penland & Co., Inc., a North Carolina-based firm specializing in telephone splicing and installation, Penland will be operated as an ad- junct of Burnup & Sims North Caro- lina subsidiary, T. L. Dysard & Son, Inc. Lynch Communication Systems Inc., San Francisco, Calif., has completed its acquisition of Transcom Electron- ics, Inc., Portsmouth, R.I., for approx- imately $7.5 million in stock. SUPPLIERS General Directory Announces Sales Department Changes General Telephone Directorys Vice President-Sales, Edward T. Jordan, announced the following changes in the Sales Department: Jack Ward, di- vision manager, Honolulu, to East Los Angeles; Herchel Weikel, division manager, Durham, N.C., to Honolu- lu; Hubert Gardner, district sales manager, St. Petersburg, to division manager, Durham; Harold Verucchi, division manager, Dallas, to new Tam- pa division; Donald Ritenour, district sales manager, Muskegon, Mich., to division manager, Dallas; Paul Ros- siter, division manager. East Los An- geles, to new Orange County, Cahf., division; Stanley Zak, district sales manager, San Angelo, to division man- ager at new Houston division. Also announced was the formation of a new Central America Division with headquarters in Houston, Tex. Matthew Martin, San Angelo district sales manager, has been promoted to division manager to head that opera- tion. OBITUARY Edmund H. Brown, chairman of the board. Preformed Line Products Co., Cleveland, Ohio, died November 25. He joined the company 15 years ago, and, in addition to chairman, also served as director of marketing. NEWS BITS Albert M. Froggatt, AT&T vice president-service costs, has retired after more than 42 years of service with the Bell System. Employee units Induction Problem Indications: "Party receives broken ring." "Bell taps on party line." "Wrong party receives ring." "Line noises up easily." "Coin phone seems to go out of order in late morning, early evening." Designed Solution: SNC SNC INDUCTION NEUTRALIZING TRANSFORMER Magnetic induction from power lines can, and does, cause problems for telephone facilities. Until now, most methods to reduce the effects of magnetic in- duction into telephone cables have been only partially effective. The SNC Induction Neutralizing Trans- former has been designed to provide relief - at reasonable cost. For a complete, authoritative report: "Meeting the Problem of Magnetic Power Line Induction Into Tele- phone Facilities" - phone or write; \P| Mr. Vernon H. Young, Vice President, Sales J\j15mANUFACTURING CO., INC. (414) 231-7370-P.O. Box 470-Oshkosh, Wis. 54901 Circle 120 on reader service card 2S I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 that had been reporting to him now report to other AT&T officials. Wil- liam J. Schindele, assistant vice presi- dent, is now assigned to the unit headed by F. Mark Garlinghousc, vice president-state regulatory matters, while Assistant Vice President M. G. Killoch moves into the engineering department headed by Vice President Kenneth G. MeKay. L. E. Eastmond, AT&T assistant vice president-service costs, has been named a vice president of AT&T Long Lines. Hancock (N.Y.) Telephone Co., recently cut over a new computer-con- trolled electronic central office, ac- cording to Gail W. Wrighter, presi- dent and general manager. The GTE Automatic Electric Cl-EAX unit will serve the present 1600 subscribers and allow for the steady growth over the next 20 years. Illinois Bell announced the in- stallation of its 100th Picturephone set at the firm of Salomon Brothers. Internal Picturephone service, intro- duced December 1, 1970, is available to all IBT customers, while local ex- change service, begun last April 1, is available in an eight-square-mile area in and around downtown Chicago. Tel-Tone Corp., Kirkland, Wash., reached a distribution agreement with North Electrics Supply Department for the distribution of Tel-Tone PABX tone adapters, tone test equipment and remote service observing systems. Tele-Norm Corp., Farmingdale, N.Y., has named T. N. Communica- tions Co., New York City, as nation- wide exclusive sales agent for its inter- communication and PAX equipment. Beservation Telephone Coopera- tives Squaw Gap exchange, which covers an area of 1000 square miles in western North Dakota and eastern Montana and previously had no phone service, was cut over to a new all- buried, all-one-party dial system on December 15. GTE International Inc. has been awarded a $1 million contract to pro- vide the first nationwide communica- tions system in the Himalayan king- dom of Nepal. The 380-mile micro- wave system will provide service between the countrys 10 main cities. Presently, high-frequency, single-side- band radios provide the only means of long-distance voice communications in the remote country located between India and China. To transport equip- ment and personnel in the many road- less areas, both yaks, the areas an- cient beast of burden, and modern helicopters will be used. GTEI also announced receipt of a contract to supply high-capacity microwave equipment for a radio system linking the satellite earth station to be built in Barbados, West Indies, with the Is- lands existing communications net- work. Globe Glass Manufacturing Co., Elk Grove, 111., has changed its name to GIobe-Amerada Glass Co. and is offering its common stock to the pub- lic for the first time. The Amerada subsidiary supplies laminated archi- tectural glass, primarily for security and environmental applications. Illinois Bell has installed an IBM System/370 Model 155 com- puter to provide corporate data pro- cessing services throughout the state, including maintenance of property and cost records, research, simulation of proposed computer projects and payroll processing for more than 43,000 employees. Any lumber company that pines for you is in the This is the kind of outdoor advertising message we use to remind peopie to check the Yeiiow Pages for anything they want. it aiso shows the iocai businessmen that we advertise their wares. We put our messages on 725 biiiboards, 920 Scotchiite highway dispiays and in more than 16,000 ads that go into over 300 newspapers. And we dont stop there. Besides advertising iike this, we heip design directories that fiii your needs, compiie and pub- iish directories with a minimum of errors, and seii Yeiiow Pages advertising that produces maximum revenues. So if youre not getting service iike this, why not give usa caii. We think theres a iot more to the Yeiiow Pages than just printing them. GERERALTELEPHOnE DIRECTDRy COmPARV Circle 121 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 21 Conventions and Meetings NATIONAL AND STATE TELEPHONE ASSOCIATIONS Name Date Location Hotel/Site Info/Phone National Telephone Cooperative Assn. Jan. 12-14 Maine Jan. 20-21 OPASTCO Winter Meeting Jan. 26-28 Miami, Fla. South Portland Scotsdale/Phoenix, Ar. Fontainebleau Stagecoach Inn Safari 202-833-2113 207-773-9912 417-3344753 Louisiana New Hampshire Minnesota Feb. 9-12 Feb. 15-16 Feb. 14-17 New Orleans Manchester Minneapolis Monteleone Sheraton Wayfarer Raddison 318-992-3335 603-746-3123 612-222-8345 Texas-Oklahoma Western Rural March 12-14 March 22-23 Dallas Portland, Ore. Sheraton-Dallas Imperial 512476-7015 206-465-2211 Ohio Iowa and Nebraska April 11-12 April 10-12 Columbus Des Moines Sheraton-Col umbus Fort Des Moines 614-221-3231 515-244-9912 Mid America (Kan/Mo) Kentucky Michigan Wisconsin Georgia/South Carolina May 7-10 May 8-10 May 16-18 May 22-24 May 24-26 Kansas City, Mo. Louisville Traverse City Fontana Atlanta, Ga. Muehlebach Stouffers Inn Park Place Motor Inn The Abbey Marriott 314-636-2613 606-277-6115 608-2554801 608-255-4801 404-577-3608 Pennsylvania June 5-7 Indiana-lllinois June 6-9 New York June 11-14 Canada June 12-14 Western Conference (Wash/Ore/Calif/Nev) June 19-21 Bedford French Lick Lake Placid Halifax, Nova Scotia Anaheim Bedford Springs Sheraton Lake Placid Club Nova Scotian Hotel Disneyland Hotel 717-238-8311 317-635-1272 518462-6696 613-237-3369 206-682-7035 New England (TANE) West Virginia Arkansas North Carolina Sept. 10-13 Sept. 11-13 Sept. 17-19 Sept. 24-27 Dixville Notch, N.H. Wheeling Little Rock, Ark. Pinehurst The Balsams Oglebay/Wilson Lodge Sheraton The Carolina 603464-9911 304-824-5111 501-375-0086 919-787-7140 U.S. Independent Telephone Assn. Oct. 10-13 Virginia Oct. 29-31 Las Vegas, Nev. Williamsburg LV. Convention Hail Williamsburg Inn 202-783-5300 703-296-5727 Florida Dec. 6-9 Walt Disney World Contemporary Hotel 904-362-3243 TELECOMMUNICATIONS EVENTS Conferences, Seminars, Shows Name Date Location Hotel/Site Info/Phone Pub. Util. Sec., Natl. Safety Council Jan. 10-12 Orlando, Fla. Gold Key Inn 312-527-4800 REA Tel. Engineering Symposium Feb. 15-17 Dallas USITA Small Business Feb. 16-18 San Francisco Purdue Underground Corrosion Course Feb. 23-24 Lafayette, Ind. REA Tel. Engineering Symposium Feb. 29-Mar. 2 Washington Sheraton-Dallas Mark Hopkins Memorial Center Statler Hilton 202-388-2513 202-783-5300 317-924-3341 202-388-2513 REA Tel. Engineering Symposium March 7-9 IEEE International Conv. March 20-23 USITA Small Business March 22-24 St. Paul, Minn. New York, N.Y. Pittsburgh, Pa. Hilton Coliseum & N.Y. Hilton Flying Carpet 202-388-2513 313-962-2100 202-783-5300 Underground Engineering Expo National Assn, of Broadcasters USITA Small Business April 4-6 April 9-12 April 26-28 Anaheim, Calif. Chicago St. Paul, Minn. Anaheim Conv. Center Conrad Hilton Hilton Intl Communications Assn. (ICA) May 7-11 USITA Small Business May 10-12 National Cable Television Assn. May 11-17 Spring Joint Computer May 15-18 International Microwave Symposium May 22-25 Dallas, Tex. Orlando, Fla. Chicago Atlantic City Chicago Fairmont Langford Hotel Conrad Hilton Convention Ctr. Arlington Pk. Towers 213-826-8388 202-293-3580 202-783-5300 203-327-0750 202-783-5300 202-466-8111 201-391-9810 312-225-9620 Ex. 4087 International Switching Symposium June 6-9 USITA Small Business June 7-9 MARUC June 11-14 USITA Advanced Management Program June 11-16 Intl Conf. on Communications June 19-21 American Right of Way Assn. June 19-23 USITA Management Dev. Program June 25-July 14 Cambridge, Mass. Dallas, Tex. Bloomington, Minn. Lawrence, Kan. Philadelphia Columbus, Ohio Lawrence, Kan. Mass. Inst, of Tech. Sheraton-Dallas Radisson South Univ. of Kansas Sheraton Sheraton-Columbus Univ. of Kansas 617-879-9359 202-783-5300 612-941-5220 913-864-3795 313-962-2100 213-383-2117 913-864-3795 NTCA Regions 7, 8, lO July 26-28 Aspen, Colo. not announced 202-296-7466 NTCA Regions 1, 2, 3 REANortheast Region Aug. 9-11 Ausr. 29-31 Gatlinburg, Tenn. Cincinnati Mountain View Hotel Terrace Hilton 202-296-7466 219-831-2176 202-628-7326 NARUC Nov. 27-30 New Orleans Marriott 22 1 TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Eightof the top twelve independents (including the top three) use our services. So does the Bell System. shouldn't you? We provide total communications capability (cen- tral office, inside plant, onfside plant) worldwide: f TD ) ffg/f/ffS DOmmUnlCBtlOnS, IHD. equipment (new and rebuilt); installation; mainte- Another ol the Ms Mamaiional companies nance. Want to know more? Contact us. Peachtree Road N.E., Atlanta, Ga. 30341 CALL TOLL FREE (800) 441-9485 404-4S8-960i A uniquely capable telecommunications service company Circle 123 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 23 San/Bar line cards give you more -even two-line control. Now, with San/Bars new Model SB 4100A Line Card you can provide duplicate key feature supervision at two separate locations utilizing a single cable pair. This two-line control is designed to mount directly in a KTU cabinet and will operate effectively over a 2000 ohm loop. It also includes the standard features of our popular Model SB 4000D Line Card-the di- rect replacement for all line cards on 1A2 and 10A2 KTU systems. An SB 4000D Line Card SB 4100A Line Card Circle 124 on reader service card 24 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 equipment engineer for a major tele- phone system said this about the 4000D: Its the only card flexible enough to work in all systems, in any situation, with any type of equipment. For additional information, contact the Marketing Department at our Executive Offices. Order from your nearest San/Bar Service Center. In most cases, we can give you immediate delivery from inventory. P SAN/BAR CORPORA TION Executive Offices and Western Service Center: 17422 Pullman, Santa Ana, Cali- fornia 92705 (714) 546-6500 Central: 2525 National Drive, Garland, Texas 75040 (214) 271-1526 Eastern: 1600 Cooper Street, Durham, North Carolina 27701 (919) 596-2127 STANDARD TELEPHONES PROGRAM FOR SURVIVAL Short on capital sources but long on good management and morale, this optimistic Georgia Independent is out looking for new ways to serve its customersprofitably! Responsible for management of Standard Telephone Company are (I. to r.) Dean Swanson, executive vice president, H. Milton Stewart, Sr., chairman of the board and chief executive officer, and H. Milton Stewart, Jr., president. Survival? Theres an Independent telephone company in the Appalachian foothills of northeast Georgia which is acting like it never heard that small telcos are supposed to be wor- ried about their continued existence. The Standard Telephone Company of Cor- nelia, Georgia is too busy meeting the POTS needs of its customers and implementing ways to offer other telecommunications services (for a re- turn on its investment, to be sure) to even doubt seriously that it will be around just as long as it chooses. And thats a long time, baby. Telephone Engineer 6- Management recently traveled the territory of this 20,200-station REA commercial borrower, probing the operations and management thinking. TEirM found that there was no particular magic in the things Stan- dard was doingsimply a confident, intelligent approach to its job, a genuine sense of mission by well-paid employees and a desire to capitalize on growth potential through innovation. Com- munity support was very evident. And if there is a renewed bounce in the step of H. Milton Stewart, Sr., 74, chairman and chief ex- ecutive officer, it is because he can see that op- erations are being managed capably by President H. Milton Stewart, Jr., 33, and Executive Vice President Dean Swanson, 39, his son-in-law. And this comes at a time when many closely-held family telcos are being pressured into mergers. Lets take a closer look at this companyits physical characteristics, management philosophy, performance, problems and how it views its fu- ture. Covering a 1500 square mile territory about an hours drive from Atlanta, an inflow of both per- manent residents and vacationers has led to a doubling of station count every six years in the past 20 years. Thirteen exchanges have climbed Continued on next page JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT | 25 We feel the telco canand shouldfree itself from providing non-essential communications services on immediate demand. Continued from 6369 telephones in January 1961 to 20,209 in October 1971. During this decade, company- owned toll channel miles increased from 8 to 5100, EAS circuits from 3259 to 21,944 and gross plant investment climbed from $1,800,000 to $10,- 800,000. At the same time, unserved applications dropped from 1100 to 35. Observers recognize that these statistics exceed national averages. (See box for other company figures.) In reviewing the financial history of the com- pany and looking ahead, Stewart, Sr. had this to say: Until 1945, we survived literally by stretch- ing every dollar and each mile of plant, and es- pecially through the faith of local bankers. In 1944 a crisis was averted when our banker ar- ranged for a RFC loan. From 1945 to 1954 both the RFC and Stromberg-Carlson supplied credit for plant improvements and we used internally- generated funds to pick up deteriorating adjoin- ing properties. We spotted further growth com- ing in 1954 and received our first REA loan for $900,000 and were just notified by Herman Tal- madge on December 9 that our H loan for $850,000 was approved. We needed it badly. Theres no doubt that huge (for us) new capi- tal outlays will be necessary to serve about 15,000 new subscribers over the next 10 years. Including extensions, we look for at least 40,000 stations by 1980. Frankly, with any immediate REA loans not adequate to do all that wed like to do, and the infant Rural Telephone Bank under tremen- dous pressure, were reviewing our internally generated funds to improve this source of financ- ing.! As a step in this direction. Standard Tel in early 1971 submitted a depreciation rate review to the Georgia Public Service Commission. The study utilized a mortality dispersion factor (Iowa Family of Curves) to show that an increased de- preciation rate was justified. No decision has been handed down. Recently, the company sent its director of settlements, Conley Cathey, to the first USITA Cost Separations School. In 1972 a full cost separation study will be conducted to Standards Financial Profile1970 Source: USITA Funded Debt$8,652,511; Common Stock $821,100; Retained Earnings$540,964; Local Service Revenue$1,050,634; Toll Revenue $891,442; Miscellaneous Revenue$100,804; Uncollectables$6989; Total Operating Rev- enues$2,035,891; Total Expenses and Taxes $1,645,257; Net Operating Income$390,634; Net Non-Operating Income$3421; Income Available for F.C.$394,055; Interest and Fixed Charges$176,067; Net Income$217,- 988. DividendsNone. determine if going cost will provide an increase in settlements over the present average sched- ules. Its cautious optimism notwithstanding, long- term financing has to be one of Standards nag- ging concerns. And what has the company been doing with these dollars? In 1964, Standard committed itself to full area coverage with one and two party service in the base rate areas and four party flat rate rural ser- vice. The program was completed in 1969. Among the highlights during this period, the company acquired or built all of its present toll routes, constructed a Farinon microwave station atop Brasstown Baldthe highest mountain in Georgiato deliver three phone circuits to the U.S. Forestry Service and tourist center, and got into the CATV business on a lease-back basis. Forecasting Station Growth Forecasting, admits Milt Jr., is still less than perfect science.^ Weve found that for overall growth, straight line projections have been ac- curate. Its not so much the total, but where, that gives us trouble. We expect that household growth is going to accelerate and that as afflu- ence increases and available grades of service improve, were going to get more rural applica- tions. Using 1970 census figures, a residence growth study indicates telephone saturation from 1960 to 1970 increased from 35 percent to 67 per- cent. Adding 7552 residence main stations re- duced the number of unserved households by 1427, reflecting that the number of new house- holds increased by 6125 in the decade. Within two miles of base rate, 90 percent of establish- ments have service and beyond two miles, 50 per- cent have service. The upswing in rural service, plus rising costs in general, will accelerate the in- vestment per station. Standard is quick to foresee that its achieve- ments of the 60s will be dwarfed by the com- plexities of the 70s. Its strategy, as the younger Stewart and Swanson tell it, stresses flexibility: Like the rest of the telephone industry, our situ- ation is compounded by an unstable economy, consumerism, federal regulatory uncertainty, new service demands and accelerating equip- ^Standard has on application a $2.5 million REA loan to help finance its anticipated $1 million construction budget in 1972 and beyond. Like many others, it looks for Telephone Bank appropria- tion. -One method Standard plans to use in 1972 to better pinpoint both where its development is now, and to plot future cable facilities, is to take periodic aerial photographs along major ca- ble routes. Ex-Navy pilot Swanson flies the territory regularly in his sniall plane. '^As of October 1971 the embedded investment per main station was $732 and if including extensions, $540. By comparison, the average costs figured for just the ijears 1966-70 were $1050 and $672 respectively. TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 ment obsolescence. Then along comes Carterfone plus the renewed realizationwe saw what hap- pened to Penn Centralthat utilities are not nec- essarily a safe investment. Sure, were e.xcited about the opportunities for increasing revenues from new communications service. But lets face it, the squeeze for addi- tional capital plus qualified personnel is also more acute. We feel that a real danger from the opportunities comes when a telephone company spreads its resources so thin through meeting new service challenges that deficiencies arise in its basic objective; that is, the ability to provide and maintain top quality basic telephone service. To stretch the point, assume that all of the resources of a telephone company may be neces- sary to provide the very best Quality of Plain Old Telephone Service and that the use of the com- panys resources to provide non-essential services may not he in the overall public interest, no mat- ter how much these services are in demand by small segments of the public. Perhaps it is this logic that has shaped many recent regulatory de- cisions, especially after viewing the many service failures of some of the nations largest utilities. We feel the telephone company can, and should, take the initiative of (1) freeing itself from the obligation of providing various non-es- sential communication services on immediate de- mand and (2) receiving revenue to be derived from marketing these services through competi- tive enterprise. These two objectives need not be contradictive. At this point, management shifts from theory to action. Forming Communications Subsidiary Standard Telephone is in the process of form- ing a subsidiary corporation to the parent com- pany, which may compete directly in some areas. The Stewarts point to a number of reasons for their decision, in addition to relieving the telco from the obligation of providing other than basic communication service as a matter of public convenience and necessity: 1. It will open up a new source of capital free of the first mortgage position held by REA. (e.g. Leverage is increased and additional debt capi- tal may be obtained from public and private sources.) 2. It will have the dual effect of meeting inter- connect competition through (a) the parent Telephone Companys regular lease-service agreements and (b) the subsidiary companys sales/lease-service arrangements in the com- petitive market. 3. Stock of the subsidiary can be sold to the public without affecting the membership control of the parent telephone companv. This has a further benefit of attracting good management personnel through the offering of stock options by the subsidiary. 4. Special services could be separated from Continued on page 30 Newly-appointed Assistant to the President Denison Hull (right) meets with Cornelia plant men Williams, Barron, Duff, Wilkinson, Forten- berry, Parker and Smith. Standard Tel repairs everything it can in its own shop. Purchasing and Supply Manager Clinton White (left) and Staff Assistant Bob Howard observe Terrel Simmons at work. Responsible for much of the outside plant planning are this group of (seated) Wesley Dodd, Kay Shore, Jimmy Barry and (standing) Troy Wood and Plant Manager Tim Craven. Design and engi- neering projects fall into the lap of (I. to r.) George Stoffregen, Barry Palmer, Dave Wood and Steve Varner here doing some maintenance. District Plant Manager Henry Cameron points out a Cable Loading Terminal Record designed by Stan- dard Tel to get all its records on one sheet. Willie Seine looks on. JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT 1 27 m VSm * kA$- fcf?* ar **d f ;i^ ** iSS''" fc v,-#**^**^ ^Clik *^, KJt A* VSM^ km^ Krt a %p^i, V. V*Vi S|4i? , lZr\'2T ,!l'ir = r^,,**i, ISSf ' . -y.M'**.^i- .ii > ijii<.i.>*#i( ,)B^* f >'* - ; '** * -w?^ % -i; |.Jt^' ~'., T. t?* 7% >?;?;*- * Y^ff>^ --^v7 ' '* f' A r DlQIia raiiv The rare buy: a lot of PABX, for a little from a warehouse near you DoUar-for-dollar, our standard 40/80 PABXs are your best buys for business customers who dont foresee expanding beyond 80 lines. Weve sold more than 8,000 of these PABXs, and for good reasons. First, theres the equipment: Highly flexible 40- and 80-hne systems offering a wide variety of sophisticated sales-building features. Second, the price: We invite comparison. Third, the availabihty: Forty-eight-hour shipment of standard models is customary at our seven distribution centers across the country. In short, you get the most for your money when you buy a 40/80 PABX. And that doesnt happen every day. For more information, just call our sales representative in your area. Or, write GTE Automatic Electric, Northlake, Illinois 60164. fWn AUTOmATIC ELECTRIC Circle 129 on reader service card E - iA' , ^ -* . 4 MtMlfli A Business Customer Team available for PBX and Keyset maintenance 24-hours-a-day. Continued basic services in fact as well as in pricing con- cept, requiring cost studies and accurate pricing of special services so they could stand on their own unsubsidized value to the general public. 5. The subsidiarys sales territory would not necessarily be confined to the certificated area of tlie telephone company. 6. Profits from the subsidiary, operating in the competitive market can be maximized to the ex- tent of free market limitations. Standard is quick to point out that what it is proposing is not new to the Independent indus- try. We keep our eyes and ears open to what other companies are doing, says Swanson, and try to measure up to the leaders and innova- torssuch as Rochester Telephone, Winter Park Telephone and Chillocothe. Asked if they really intend to compete against themselves in the case of interconnect, Swanson put it this way: As a telephone company we havent lost a cus- tomer yet. Our customers know our special Busi- ness Customer Team by name and that they can reach us for maintenance on PBXs and keysets anytime day or night. With the distance we are from Atlanta this is still a major consideration. But its certainly probable that more interconnect competition will come out our way and we plan to be ready. If a customer is adament about put- ting in his own system, rather than let the busi- ness go elsewhere, our subsidiary will sell him the equipment and even a maintenance contract. Were going to outhustle these fellows. Phase 1 of the program would transfer owner- ship of the companys CATV plant, its burglar alarm and intercom sales and service to the sub- sidiary. The subsidiary would also install and ser- vice two-way radio and IMTS. Phase 2 would in- volve new product lines, MATVs, CCTV, ETV via coaxial cable (already being discussed in Georgia), data communications still in slight de- mand in Standards territory, PABXs and facsimi- le-all envisioned with the flexibility of straight sale, sales with maintenance contracts, lease op- tions, or maintenance only. Even now the telco accepts many electrical shop type functions on a non-tariff, cost-of-labor basis. These would be directed to the subsidiary. Obviously, separate books and careful watch on transfer of personnel will be in effect from the start. While some telco employees will be in- volved in the early stages, the subsidiary will have some permanent staff. Sure, were ready to make changes as necessary, affirms Stewart, Jr., and we may get shot down by regulation not yet made or spelled out. But well try anything once rather than sit on our hands. The technical experience all of us have gained out of CATV, for instance, outweighs the frustration we feel at the prospect of possibly losing our hard-earned investment.^ An Outstanding Training Record Getting back to the telephone company. Stan- dard works hard at doing a lot of taken-for- granted industry practices at above-average lev- els. For example; 1. Training. In the past two years, 86 of its II7 employees have been sent to USITA and supplier sponsored schools and seminars throughout the country, representing 3226 classroom hours . . . not counting internal workshops and manage- ment seminars. In this same period, 38 employees have attended local colleges on their own ini- tiative with the incentive of knowing that the company promotes vigorously from within where qualification exists. We are blessed, says Milt Jr., by having the North Georgia Technical and Vocational School just 10 miles from Cornelia. They turn out an excellently-prepared one to Dean Swanson and Conley Cathey check a toll route in the Cornelia office. Cathey completed the USITA settlements course recently. Aligning N3 carrier in the Dahlonega CO with Northeast Electronics and Hewlett Packard equipment are Bill Hall and Willie Saine. Test Deskman Lamar Gaines and District Operations Manager Fred Holbrooks at work checking equipment in the Cornelia central office. 30 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 three-year electronics technician. Standard claims its low turnover in all types of employee is because most people are local and want to live in this area. We firmly believe in giving peo- ple jobs they enjoy doing, train them well, help them improve, and pay them above scale. 2. Public Relations. Stewart Sr. has long been held in high esteem by Independents for his com- mitment to good corporate relations. A past di- rector for 12 years of the USITA and chairman of its Public Relations Committee, his methods were cited many times by the Telephone Advertising Institute as models for other small telcos to fol- low for being modest in expenditure and effec- tive in results. The companys employee news- paper, The Standard Bearer, is printed monthly on a Xerox 2400 copier with a pre-printed color letterhead and logo. It contains all the usual fea- tures designed to keep the employees informed. In addition, periodic luncheon meetings are held on a departmental basis to bring the executives into personal, informal contact with everyone. Standard Tel points to more than lip service in saying tliat quality of service is the cornerstone of good external public relations. The Georgia Public Service Commission receives less than a half dozen letters of complaint a year from Stan- dard subscribers, even though station growth rate has annually been exceeding 10 percent. After acceptable performance, muses Stewart Sr., our PR program really boils down to civic participation. Rather than playing up Standards problems and activities to the public, we get in- volved in public affairs. The result is a company humanizing process in which much is learned about the people and the people get to know Standard Telephone not as a cold entity, but as a group of citizens involved in the community. This approach takes time to successfully develop, but once established, the subscribers become understanding toward our problems in much the same way we responded toward their problems. Milt Jr. is presently president of the Chamber of Commerce and the Lions Club and various others have participated in the full range of civic groupsfrom developing a recreation park to a county airport. Swanson, incidentally, just com- pleted a term as president of the Georgia Tele- phone Association, a position held by Stewart Sr. in the 40s. 3. Industrial and Community Development. ^Multi-View TV Inc. . is a 600-suhscriher system covering 23 miles in the Cornelia area. Potential hookups are estimated at 1000 out of a total of 1400 homes and the company has just turned profitable after being in business three years. Stock is held privately by Stewart Jr., Swanson and the owner of the local radio station. Unless their planned waiver is granted, the telco officers would have to sell their interests by 1974 under FCC riding. Multi-View would still have the option of retaining its contract with Standard or putting up its oion cable under joint- pole rental. But, points out Stewart, whats to stop somebody from bidding for another CATV franchise and leasing the plant from the telephone company? ^Standard Tel has 25 college trained employees on its payroll. Its only full graduate engineer is Stewart, Jr. (Georgia Tech), although Annapolis graduate Swansons BS and additional military training is the equivalent of an engineering background. *^The company does advertise in local newspapers and carries on a close editorial news liason with the press. While this also becomes a part of public rela- tions, in Northeast Georgia it has exploded into big business. Not only has northern textile moved to the South and other plants pushed out from Atlanta, but tourism is blossoming. Coming through now is the under-construction Appala- chia Developmental Highway (Georgia route 400) with the approved 187-mile extension of the Blue Ridge Parkway soon to also bisect Stan- dards territory. Expansion will follow. An exam- ple of how the area is gearing for growing recrea- tion development and Standards role is illus- trated in the small town of Helen. Continued on next page Mount Yonah, which is Cherokee for highest, is the peak in the back- ground of this aerial photo which pictures the type of terrain in part of Standard Telephones territory. Capsule History of Standard Telephone M. C. York, a Clarkesville (Ga.) businessman, and several associ- ates founded Standard Telephone in 1904 and built exchanges in Clarkesville and Cornelia. Meanwhile, H. M. Stewart entered the telephone industry in 1916 as a night operator while still in high school in his hometown of Centerville, Alabama. After several years with Southern Bell, he joined Kellogg Switchboard and Supply as a sales representative. In the early '30s, Stewart was named secretary of the Texas Telephone Association and later held the same position in Pennsylvania. He purchased the two Georgia exchanges and their 419 telephones in 1939. Stewart went on to work for the Gary Group in Fort Wayne as a vice president-public relations before moving to Cornelia permanently in the early 40s. In 1944 he bought the Dahlonega exchange and a year later reactivated the abandoned Hiawasee exchange and its 11 stations. The familiar pattern followed until the 13th exchange in a six-county area was built in 1963. Standard ob- tained its corporate charter in 1951, crossed the 5000 telephone mark in 1958 and installed its 20,000th station in Sept. 1971. Standards Blairsville CO is one of nine new additions or offices built since 1360. Cunningham & Forehand of Atlanta has been the company architect. JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT | 31 Company is weighing the cost of an electronic office against senderizing its step. Continued Until a few years ago, say the Stewarts, Helen was a faceless town with marginal growth. Leaders decided to completely renovate the village with a Bavarian theme in keeping with the mountainous setting in order to attract tonrists. On request of these town fathers, the telephone company, at its own expense, placed all its facilities underground and installed two Bavarian style paystations to fit in with the over- all theme. Visitors have reached staggering pro- portions and the resulting trade is rapidly repay- ing the residents, who performed the entire reno- vation with their own private funds. Standard is also experiencing repayment from its part, as gross revenues from the exchange jumped 30 percent higher then the year prior to renovation. Another of our towns, Dahlonega, which is the scene of the nations first gold rush, has since started a similar renovation program using a Western theme. Again, we placed our plant underground and assisted in other ways. In another avenue, so-called problems can be turned into an opportunity. In Dahlonega, chil- dren were using the companys central office and pole yard grounds for play area due to a lack of playground facilities in the low income neighbor- hood where the office is located. The children were causing considerable damage such as glass Standard Shares in Leased Computer Sixteen Independent telephone companies in the states of Georgia, Tennessee, Mississippi, Alabama and Florida are both stockholders and customers of Teledata Corpo- ration. The Atlanta computer center was formed in 1968 to handle the subscriber billing and toll processing needs of Independents. With a data processing profes- Robert Hayes, EVP of the Georgia Telephone Association, and Dean Swanson of Standard Tel study toll records as Teledatas President Bruce Hogg runs the computer. sional, Bruce Hogg, as president and manager, and telco operating people as directors and officers, the company now processes 76,000 accounts on its IBM 360-20. It plans to go into full service including CPR records, cost studies and trouble tickets. According to Robert Hayes and Standard Tels Dean Swanson, Teledata charges average 180 per bill and U/20 per toll ticket. breakage, sign and light damage as well as pos- ing a question of liability in the event of an acci- dent. Standard responded by spending $4000 to turn part of the pole yard into a paved basketball court and playground. As hoped, the vandalism dropped immediately. Another example of being a good neighbor oc- curred at the Cleveland office. A conference room which can be entered from the outside of the building is being prepared so it can be locked off from the remainder of the office. This will help alleviate a problem civic and church groups in that town have in finding meeting space, since all such groups are invited to use Standards room free of charge. All that is required is that the group leader make a specific reservation for the use of the room, pick up the key from the Cleveland District Operations Manager and re- turn the key the following day. 4. Operations While, again, much of what Standard does is routine for telephone companies, it evidences a firmness of purpose and practice based on dis- covering what works well in its own bailiwick. The company, for instance, opens a new business office whenever a location reaches 1000 stations, hires a local girl, and has a district manager who runs the central office. Weve found that our customers like to talk to the telephone company. Our COs operate like little telephone companies and, says Swanson, I wouldnt even have to go to many of them if I didnt want to. We do give our managers a wide latitude of purchasing and decision making. Once a month the district man- agers come to Cornelia for a meeting. Standard has found that paystations are a growing part of its revenue. Its 135 booths aver- age about $50 a month after the A station set- tlement. While vandalism is not serious, profes- sional thieves who pass through the territory on their way south every year provide a yet-to-be- solved problem. The company is also subject to its share of misleading yellow page directory in- voices and plastic directory cover salesmen. (When we know theyre in town, we rush a let- ter out to our business customers advising them that if we find the covers on the books of our subscribers, we will remove them.) Reasonable Rate Structure Not an incidental reason for its satisfied custo- mers is the companys rates. In its EAS groups, typical charges are residential city 1-party $4.50, 2-party $3.75; business city 1-party $7.40, 2-party $6.40; residential rural multi-party $4.75, busi- ness $6.15. One and two party command an ad- ditional mileage charge. Where there is no EAS, residential city 1-party is $4.25, 2-party $3.50; business city 1-party $6.40, 2-party $5.40; resi- 32 ! TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 STANDARDS BUSINESS CUSTOMER TEAM is on call 24-hours-a-day. Business Consultant Tim McCoy (left] directs the operation as PBX installer-repairmen Billy Maney, Ross Martin and Joby Picketson check out Stromberg-Carlson equipment at the iocal bank. Mrs. Jane Kimsey, PBX operator at the Cornelia Bank, goes over procedures with McCoy. dential rural $4.40, business $4.65. Residential extensions go for $1.25, business $1.75. New in- stallation charge is $6 for business, $4.50 for res- idence. They drop to $3 when apparatus is in place. Standard makes no charge for white, beige and black instruments and has a $5 tariff for all other colors. Naturally, Plant occupies the companys most careful plairning. With a look toward tone dial and other options which require sophisticated CO apparatus, the cost of an electronic office credited with salvaged step equipment and re- duced floor space is being weighed against the cost of sendeiizing present S x S equipment. This has particular significance as the company looks toward full area coverage with one-party service at a flat rate. Standard hopes that this program may be begun by 1975 with completion by 1980. By this time, adds Plant Manager Tim Craven, perhaps the state-of-the-art will allow maximum usage of station carrier and concentrators to cut costs and relieve congestion as the ground be- comes staturated with various utility services. As another hedge against ground congestion, the company is studying various methods to allow easy reinforcement of buried plant once the first cable is placed. One of these is vertical and hori- zontal space allocation while another is the plow- ing of an empty duct with the initial cable. Lightning brought about by summer storms, is probably the companys biggest natural buga- boo. Poor grounding conditions requires careful outside plant planning, especially as more fine gauge wire with carrier derived circuits are brought into service. For example, Standard has agonized over a toll cable placed in service in 1961 with N1 carrier initially and reinforced with N3 carrier in 1970. A lightning surge counter was installed on a ten mile test section of the cable for a recent ten month period, and the total number of surges exceeding 100 volts during the period was 14.879. Repeaters were generally protected from damage using a floating method in con- junction with gas tubes which performed their function so well that surges failing the tubes also dropped the carrier systems momentarily causing loss of conversations. This occurred numerous times over the ten month period, and even though equipment damage was light, the incon- venience caused to the customer, plus loss of toll revenue, was intolerable. Consequently, Stan- dard plans to file an application with the FCC to establish a diversity system utilizing its present microwave tower on Brasstown Bald. A new path will be plotted via this station to the toll center owned by Southern Bell in Gainesville, Georgia. Trying New Cable Techniques Standard has more than a passing interest in keeping up-to-date on cable technology. It has been direct burying on a broad scale since the early 60s with more than one-half of its present plant underground. The rock soil condition dur- ing installation does do scattered damage to sheath, which in turn leads to water entry and widespread cable damage during summer light- ning hits. (This, however, does not deter Standard from its goal of eliminating aerial plant by 2000, and it has set up its annual charges accordingly.) Havens also plans to take a close look at grease filled cable by specifying it on an upcoming con- tract. His wry comment when questioned on aluminum cable was: We hope the Bell manu- factures and uses a lot of it so that more copper is freed up for our use. One interesting tech- nique now being used is keyed to the future. When Plant has to go into a buried cable to re- pair trouble, the men encapsulate the splice and, before closing, put a tube through the splice to allow passage. Based on a report that AT&T is developing a system which is designed to force a special liquid under pressure through the cable and purge the cable of water and then setup to turn into jelly. Standard plans to be ready. In fact, being ready might well be the subtitle for this aggressive telephone company which plans to move ahead, serving as its motto states: Northeast Georgias Communication Part- 99 _ ner . JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 33 White Pages Editors Improve Usefulness of Directories Coordinating suggestions from both employees and customers produces a better bookand fewer DA calls. The average telephone directory is Uke a li- brary. A great number of facts are there, be- tween its covers, just as a great number of books are found in most libraries. But unless you can find the specific fact or book you need easily, both are useless. Obviously, the present-day directory repre- sents information which must be well organized to realize its full value. The sheer number of list- ings have made this necessary. Thats only part of the problem, however. The rise of complex business structures, the increase in government agencies, and the development of corporate images through advertising have con- tributed some rather confusing data to the peo- ple who make up the white pages directory. Since the end of World War II, the federal gov- ernment alone has added over 17 major agencies. Many businesses use shortened names for effec- tiveness in advertising and corporate identifica- tion, names such as MONY (Mutual of New York), C&S (Citizens and Southern Banks) or GENESCO (General Shoe Company). For the customer, this means difficulty in locat- ing a number, frustration and less reliance on the white pages directory as a source of information. For directory assistance operators, it means addi- tional customer calls for help. In fact, the rise in calls to directory assistance has been greater than the growth of telephone users and the D.A. oper- ators are becoming overburdened. And while they are experts in locating hard-to-find listings, they also experience diflBculty from time to time. Until recently, responsibility for reviewing and improving directory listings was divided between communications advisors, service representatives and directory sales people. The result was lack of coordination and, too often, superficial interest. A directory editor concept emerged from a System Listing Improvement Gommittee which was formed by AT&T to define problem areas and ways to overcome them. The first Editor Workshop was held in New York in 1968, with System editors representing nine companies at- tending. The basic objectives of the directory editor are: A continuing program to improve the useful- ness and reference features of telephone direc- tories in support of their purpose as the primary source of telephone numbers. Interdepartmental coordination to develop and control listing quality. Reducing calls to directory assistance. To meet these objectives, directory editors must bring a wide variety of talents to their jobs. They first of all must have knowledge of the di- rectory itself and of associated items such as business and government, as well as know the op- erations and practices of other departments in- volved in making up the directory. The ability to communicate is also important, for they are ba- sically coordinators between these departments. Directory editors must have imagination to find new and easier ways of listing information. And finally, they must have good judgement, the abil- ity to weigh problems and solutions and come up with answers. Directory editors have many sources of input to discover where the problem areas lie in direc- tory listings. Gustomer complaints and stockhold- ers letters are some. Another, and probably the most important of all, is the directory assistance operators. Since their jobs put them into direct contact with the problems of directory listings, they are eminently qualified to offer suggestions to the problem, as well as alert the directory edi- tor to trouble spots in the directory. Keeping aware of the operators problems is an important part of the directory editors job. Listing problems in the white pages can be boiled down to three basic categories: 1. listings that dont exist but should. 2. listings that exist but are difficult to find. 3. listings that exist but shouldnt. An example of listings that dont exist but Adapted with permission from Southern Bell Views, August, 1971. :H 1 TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 should can be found in trade names familiar to the public, normally as a result of advertising. The Aluminum Corporation of America would certainly be found in the directory, but its more familiar name, ALCOA, might be left out. Gov- ernment listings can be a problem too, for al- though the directory lists all government agen- cies in its area, many government functions fall under agencies whose oflBcial titles are uninfor- mative and misleading to the average person. Many listings exist but are difficult to find, pri- marily because of alphabetising rules. A compa- ny whose name starts with Northwest and a company whose name starts with North West are going to appear in different places in the di- rectory. People with names beginning with Me and Mac have similar troublesthe names Mc- Coy and MacCoy sound exactly alike and yet in an average sized directory they will not appear together. Another problem in this area comes with cute spellingsDee-light Bakery or Pair o Dice Lounge are almost impossible to find if one has only heard, rather than seen, the names. The last eategoryof names that exist but should notis probably best exemplified by com- panies who might list a name in the white pages in order to occupy a favorable position in the yel- low pages. A-Aalco Moving and Storage Co., for instance, is obviously titled so that it will be The effectiveness of the Directoiy Editor program depends on interdepartmental cooperation. Here Southern Bell Directory Editor Oscar Lovelace (left), who handles North Carolina, discusses a point of policy with Charles Hill, Marketing account manager. the first listing under Moving and Storage in the yellow pages. Finding it in the white pages, how- ever, is extremely difficult. Businesses might also confuse the customer with a name that sounded like a well-known brand name, Kenmore Wash- er Service, for example. All of the problems shown above are ones that the directory editors must solve if they are to im- prove listing quality. The problems are being solved with the help of the editors, using a variety of methods that in- clude frequently called number boxes, cross-ref- erencing, eliminating unwanted listings, adding others and generally putting the white pages di- rectory in the language of the man on the street. Government listings, always a problem, are be- ing improved through quick reference lists. Set apart from the normal listings, quick reference lists give the most commonly called local, state and federal numbers. The listings are by pro- gramsnot departments or agenciesand thus you can expect to find such nonoflBcial listings as Draft Board, Marriage License, Federal Income Tax, Traffie Court and Welfare. These quick ref- erence lists should go far in improving the white pages, since last year over two million calls were received by D.A. operators in the Bell System re- questing government related numbers. Cross-referencing is another way in which the directory editors are seeking to eliminate custom- er confusion. Cross-referencing can be particular- ly helpful in cases where the name is known but the spelling is not. A cross-reference under the listing for the name Cain should indicate: See also Caen, Cahen, Caine, Cane, Cayne, Kain, Kaine, Kane, Kayn. A cross-reference might also help you locate a company that has changed its name, or is now part of another organization. The directory editors are not the first to notice and attempt correction of these problems. Com- munications advisors, service representatives and director sales people still bear the primary re- sponsibility, but the directory editors jobs put them into a position where they can coordinate the directory problems of TraflBc, Commercial and Marketing. This is particularly important when you consider that uniformity is one of the goals of any reference book. Basically, there is no limit to what the direc- tory editors can do. Change of listings, however, should have the approval of the customer, and it is up to the direetory editor, working through various departments, to show the customer how his listings might be improved. JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 35 LINE CONDITIONING FOR DATA TRANSMISSION Distortion and Its Effect By Ralph E. Willey Part 2 explores various types of distortion and their characteristics. A s mdicated in Part 1 (December 1), there are ** fundamentally three types of distortion: at- tenuation distortion, phase distortion and non- linear distortion. Attenuation distortion is more accurately known as amplitude-frequency distortion. This is the distortion caused by variation of transmission attenuation or loss with frequency. The attenua- tion of typical cable pairs used in telephone communication is proportional within the voice band to the square root of the frequency. Where runs of several miles are necessary, it is generally the practice to add lumped inductances, com- monly called loading, at uniform intervals. This gives a lower and a more uniform frequency loss characteristic. However, this makes the line act as a low-pass filter with an abrupt cutoff. The amplitude versus frequency characteristics of typical loaded and unloaded cable pairs are shown in Figure 2-1. Most carrier telephone systems derive many voice channels by frequency-division techniques. The bandpass filters associated with such sys- tems result in a steep cutoff at both the high and the low end of the voice band. Typical attenua- tion versus frequency characteristics of carrier systems are shown in Figure 2-2. In switched networks, there are at the switch- ing points repeating coils, series capacitors, and shunt inductors used in signalling and supervi- sion. These cause voice channels to have a low frequency cutoff even where the connecting fa- cility is capable of transmitting DC components. The overall attenuation versus frequency charac- teristic of a typical switched telephone network has a low end cutoff starting at about 300 Hertz. The range 3001100 Hertz is relatively flat. The range 11002900 Hertz shows a linearly rising loss. Above 3000 Hertz the loss increases rapidly. The effect of non-uniform attenuation on data communication is to distort the received spec- trum and, in turn, the data signal waveform. For a particular channel a reasonable amount of such distortion can be allowed for in the design of the overall transmission characteristic. Under certain limitations, it is theoretically possible to construct linear compensating networks which equalize at- tenuation distortion over the signal band. This will be discussed in Part 5. Phase-Frequency Distortion By phase-frequency distortion we mean dis- tortion due to deviation from direct proportion- 36 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Figure 2.-4. Phase curve for normal line illustrating intercept distortion. ality of phase shift to frequency. Such distortion constitutes the most limiting impairment to data transmission, particularly over telephone voice channels. The main sources of phase distortion are loaded cables and carrier channel filters. The effect is most severe at the band edges where there is a steep rise in attenuation. The unavoidable capacitive and inductive re- actances associated with various types of com- munications channels introduce delay, because they require a definite time to react to different frequencies. For instance, a capacitor does not charge instantly; it requires a definite time, de- pending on the capacitive reactance of the ca- pacitor and the applied voltage. Since capacitive reactance varies inversely with frequency, the charging time will vary with frequency. Similar- ly, an inductance requires a certain amount of time to build up its inductive field, and this time Continued on next page JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 37 Non-linearities cause harmonic distortion and spurious frequencies. Continued also varies with frequency. Phase distortion may also be caused by echoes from imperfect line terminations. This is called echo ripple and will be discussed in a later sec- tion. In Figure 2-1, we showed the relation of atten- uation for cable facilities to frequency. In reality, we consider the propagation constant which for these media is composed of two parts. They are attenuation and phase constant and can be shown to be P = a -H/3 = V(R + jwL) (G -f j(uC) where a is the attenuation constant in nepers and yS is the phase constant in radians. In this expres- sion R = Conductor loop resistance in ohms L = Inductance of conductors in Henries G = Leakage conductance in mhos C = Shunt capacitance in farads tt) = 2 77 f f = frequency under consideration Solving the equation for a and y8, we have = V2 [V (R"" + (G2 -h ft,2C2) + RG - oj2LC] Id- = 1/2[VR^T^I^^L2HG2Tw2C2) - RG + ftj2LG] If R, L, G and C are given on a per mile basis the attenuation constant a computed will be on a nepers-per-mile basis. It can be transformed into decibels by multiplying the value obtained by 8.686. Likewise the phase constant /3 will be in radi- ans per mile. It can be converted into degrees by dividing by 2 tt. It has been shown that distortion-free trans- mission from phase delay can be obtained in a network only if /3 = KW + C where K is a constant and C is equal to 27rr. This means that phase delay versus frequency must be linear as shovra in Figure 2-3. A normal telephone line does not meet this criteria. A more general type of phase curve ex- perienced in telephone facilities is as shown in Figure 2-4. It will be observed that the phase characteristics of this line do not meet the general requirements set forth for distortion free transmission. Even though the curve oi Figure 2-4 is not straight, it may be assumed to a certain degree of approximation to be straight within certain fre- quency limits. This is shown graphically in Fig- ure 2-4. Therefore, we may say that the phase versus frequency (/3 vs. co) curve is a straight line between the frequencies Wa and cOe- However, if we take the yS curve segment from Figure 2-6. Waveforms in and out of 10 miles of 22H88 cable. M ! TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 CO and co^ to be the J3 characteristic, we must con- sider the J3 curve intercept to be the intercept of the extension of this line and the zero frequency axis. It is quite unlikely that this intercept (point j3s on Figure 1-1) will be 0 or 27rr. Failure to meet this requirement may be expected to cause distortion. It has been found convenient in dis- cussing non-ideal systems to define the envelope delay or more simply delay as the slope of the phase-frequency curve and to speak of the de- parture of the envelope delay from a constant value as delay distortion. As can be seen from the above, if yS and co do not change in direct proposition, the phase delay will change with frequency. Therefore, a com- plex wave form made of many differing fre- quencies could be severely distorted in transmis- sion due to the time difference of arrival of each component at the output. The distortion caused by this effect is called delay distortion and it is the direct result of a non-linear phase shift char- acteristic in the transmission medium. Since the several components of a complex wave are un- equally attenuated and delayed, the envelope shape is distorted. The effect of phase distortion on baseband sig- nals can be illustrated by considering the trans- mission of a 2000 bit-per-second data test signal through a section of 22H88 loaded cable. Let us consider the 2000 bps data signal composed of al- ternate Is and Os. Such a signal is made up of all odd harmonics of 1000 Hz. When this signal is sent through the 22H88 section of cable only the 1000 Hz. fundamental and the third harmonic will arrive at the output. All higher harmonics will be eliminated by the filtering action of the facility. These two components will encounter phase shifts which are not proportional to their frequencies. The output waveform will be dis- torted both by the removal of the higher har- monics and by phase shifts. This effect is illus- trated by Figures 2-5 and 2-6. The phase shift characteristics of one mile of 22H88 loaded cable is shown in Figure 2-5. Fig- ure 2-6 shows the fundamental and third har- monic of the input wave forms. Only these are shown since all others will be attenuated severely by the loaded cable. The frequencies IkHz and 3kHz are indicated by arrows on Figure 2-6. The phase shift at IkHz is 0.5185 radians/mile and at 3kHz is 1.8084 radians/mile. If the cable circuit is ten miles long the IkHz component will be shifted 5.185 radians and the 3kHz component will be shifted 18.04 radians. The output voltage, neglecting attenuation, will be 62 = 3 Sin (27t lOOOt - 5.185 = Sin (27t 3000t - 18.04) Since the phase shift at 3000 Hz is not three times the shift at 1000 Hz the third harmonic com- ponent is delayed relative to the fundamental by , _ 18.04 3(5.185) _ 2.529 radians 2tt 3000 OOOOtt radians/sec Td = 134 microseconds delay distortion This value corresponds to the difference in veloc- ity of propagation at the two discrete frequencies for ten miles of 22H88 loaded cable. The wave forms in and out of this length of cable are drawn to scale in Figure 2-6. The waveform distortion is readily apparent. Attenuation has been neglected to emphasize the effect of the phase distortion (delay distortion). Non-Linear Distortion Amplitude-frequency and phase-frequency distortion as previously described are essentially linear effects. They obey the principle of super- position in that responses to individual inputs add directly to form the response when the indi- vidual signals are added to form a composite in-' put. It is this property of linearity which makes the resolution of signal waves into components at different frequencies so potent a tool for analysis and measurement. Transmission channels are also subject to non-linear distortion. While good design tends to make non-linear effects small, they are a source of phase distortion and must be considered in data transmission. Worthy of special mention is a form of non- linear amplitude distortion which can arise in telephone channels having compandors. A com- pandor consists of a pair of gain-adjusting cir- cuits which act to maintain a more favorable sig- nal-to-noise ratio over a line facility. At the in- put of such a channel, one unit compresses the amplitude of the voice signal. The narrowed range enables transmission through a noisy fa- cility at a relative high level without overload- ing. At the channel output a complementary unit expands the amplitude range to that of the orig- inal input. The action is not instantaneous but is governed by the envelope of the signal waves over a time comparable with the duration of a speech syllable. The variable gain in the two cir- cuits is designed to have equal attack-time char- acteristics to preserve the original voice wave- form. However, the compression and expansion may not be exactly complementary, and the re- ceived waveform may, therefore, be different from that originating at the transmitter terminal. Such effects may inpair data signals, particularly high-speed AM signals, even though voice sig- nals would not be noticeably affected, (to be con- tinued next month) JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I ari elfectk^e C0NTINENTAL_HATFIELD Wire & Cable Division COMMUNICATION PRODUCTS DEPARTMENT 48 7 HILLSIDE AVENUE HILLSIDE, NEW JERSEY 0 72 0 S Hatfield Wire & Cable Division has recognized the need for an inexpensive and dependable moisture block which could be easily installed in the field. We now offer such a block in Kit form. Each Hatfield Moisture Block Kit contains sufficient materials to make 2 blocks. The polyester film mould is easily assembled, and the polyurethane blocking compound is bag mixed and poured into place. These moisture blocks will prevent entry of water and moisture into the cable core, providing a seal that will substantially extend the life of both new and existing buried outside plant. The MB-750 kit is used on cables having an outside diameter up to and the MB-1500 kit is used on cables having an outside diameter between %" and IV2". For more information about Hatfield Moisture Blocks and our complete line of Polypropylene Insulated Telephone Cable please call us at one of the following locations: Atlanta, Ga. (404) 458-5571 Milwaukee, Wis. (414) 258-7270 Dallas, Texas (214) 747-4959 Hillside, N. J. (201) 925-4000 Chester, Va. (703) 282-6533 Los Angeles, Ca. (213) 269-3111 Circle 140 on reader service card Alabama-Mississippi Approves Merger for Exhibit Purposes By John G. Reynolds Publisher Meeting at the Admiral Sem- mes Hotel, Mobile, Ala., members of the Alabama-Mississip- pi Independent Telephone Associ- ation approved plans for the con- solidation of their annual conven- tion for trade show purposes with one or more neighboring telephone associations. Presenting plans for the consoli- dation, Joseph D. Fail, first vice president of the association, ex- plained Were not trying to com- bine the associations. Each associa- tion will have its own annual busi- ness meeting and continue to have its present identification. Our plans, Fail said, envision a three or four-state trade show, patterned after the very successful Western Conference and known as the Southern Conference. We be- lieve the regional concept of tele- phone industry trade shows must come. It will produce larger confer- ences and provide larger audiences for the suppliers and exhibitors. Voicing her approval of Fails comments, Mrs. Jean S. Brandli, president of the Alabama-Missis- sippi association, emphasized that Suppliers prefer the regional con- ference plan, and urged member- ship approval of a program that will take several years to accom- plish. The suggested regional confer- ence plan was approved by a vote of 16 to 3, with W. S. Howard of the Tennessee Telephone Associa- tion reporting the tentative ap- proval of the Tennessee group. Leading off the first general ses- sion of the Alabama-Mississippi convention, Charles E. Nahabed- ian, of Bell Telephone Laborator- ies, reported on new communica- tion developments and the methods used to improve telephone service. We are studying present equip- ment and their components, he said. Included in our overall ob- jectives are: (1) Transmission im- provement; (2) new services that will give the customer a telephone that will do more than transmit and receive voice signals. Explaining that communication is developing from person-to-per- son contact to machine-to-machine contact, Nahabedian stated We have only scratched the surface of the Picturephones capabilities and versatility. Although, today, we say the telephone is the next best thing to being there, the Picturephone will soon take over many of the communication jobs that customers are demanding. USITAs Director of Settlements, James T. Naylor, appearing as the second general session speaker, urged company-by-company par- ticipation in present nation-wide studies of separations. Reviewing the early years of toll settlements, Naylor defined settlements as the amount of cost that passes from one company to another and credited USITA and the Bell System for the progress made in the area of toll settlements. Addressing the final general ses- sion, William L. Chappelle of the U.S. Department of Labor, urged the managements of telephone companies to take their questions and problems direct to the depart- ments representatives. It is our wish, Chappelle said, that companies will contact us and seek answers to their problems. Some businesses are under the im- pression that the Department of Labor makes investigations. This is wrong. Call us when you need help and we will help. The final convention speaker, Mrs. Juanita McDaniel, of the Ala- bama Public Service Commission, told the conventioners that the majority of people believe theyre being represented by the commis- sion only when rate increases are turned down. Commenting on the growth of Continued on next page PHOTO 1Mrs. Jean S. Brandli, outgoing president of the Alabama-Mississippi Independent Telephone Association, presents gavel to new- ly elected president, Joseph D. Fail. PHOTO 2-James T. Naylor (left), USITAs director of settlements, meets with D. A. Perigo, AMITA executive vice president. PHOTO 3W. Fred Thomas, president of the Mid-South Pioneer Club, introduces his wife to Pioneer luncheon guests. PHOTO 4J. A. Mayberry (left). South Central Bell, greets ITPA President Ellen Neale and her husband Dory. JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 41 Telephone Loan Bank stock is a proper investment for a REA borrower. Continued the Independent telephone indus- try, Mrs. McDaniel said Indepen- dent telephone companies serve over one-half of the geographical area of our country. Your average investment per phone is $605 and your average revenue per phone is $143. Since I960 the growth rate of the Independents has surpassed the Bell growth rate. This is staggering growth and you are responsible for it. Concluding the three-day ses- sion, President Brandli urged the association to (I) create a strong Legislative Committee; (2) con- sider two-year tenns for the associ- ations officers; (3) develop a pro- gram that will encourage the atten- dance and participation of PSC members at schools and seminars conducted by the telephone indus- try; and (4) encourage its mem- bers to invest in the new REA Tele- phone Loan Bank. The greatest demand for loan funds remains in the southeast, Mrs. Brandli reported. And the greatest financial support for the bank should come from the south- east. Stock can be purchased now and it is a proper investment for a REA borrower... Newly elected directors of the Alabama-Mississippi Association are: Earl McDonald, Fayette, Ala.; Harry Waller, Bruce, Miss.; John H. Vaughan, Florala, Ala.; Ken Bar- ber, Fayette, Ala.; and Marvin Hill, Monroe, La. OfBcers are: President, Joseph D. Fail, Bay Springs, Miss.; First Vice President, John H. Vau- ghan, Florala, Ala.; Second Vice President, Harry E. Waller, Bruce, Miss.; Third Vice President, Joe Hicks, Calhoun City, Miss.; Trea- surer, W. Fred Thomas, Eclectic, Ala.; Executive Vice President, D. A. Perigo, Montgomery, Ala. TE&Ms candid camera caught many of the innovative costumes at the Costume Ca- sino Party. PATENTS PENDING IN U.S. AND WORLDWIDE New concept G Protector Clip gives positive, fooiproof ground of buried service wire at station protectors and other ground connections. Clip fits easily on one pair, two pair, and larger buried ser- vice wire. Pairs exit through clip channels for super protection. Plastic shroud is furnished which prevents corrosion of wire shielding at connection point. Shroud gives added strain relief and reduces possibie br^al in fragile metal shieldings of wire. Easily connected and disconnected; always reusable. Extremely low cost! REQUEST SAMPLE AND DATA SHEET ON CTC NO. 4047 COMMUNICATIONS TECHNOLOGY CORPORATION 22^7 Cdiey AVENUE, LOS ANGELES, CA. 90064 (213) 478-5061 I CANADA; COMMUNICATIONS TECHNOLOGY (CANADA) LTD. Mew 0 G PROTeCTOR CLIP GROUNDING BREAKTHROUGH WITH NO SHIELDING BREAKTHROUGH Circle 142 on reader service card 42 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Plant/Engineering by John S. Reed 80-Line Electronic PABX Uses TDM Switching A systems engineering study and exploratory development progi-am undertaken in mid-1968 by Bell-Northern Re- search of Ottawa, Canada, to define in detail the require- ments for future PBX systems has resulted in a new 80-line electronic PABX that draws many of its advantages from the use of time division multiplex switching. According to Tony Stansby, manager of PBX develop- ment, Although TDM switching has found previous ap- TRANSMITTER A CENTRAL CONTROL 1 TRANSMITTED VOICE SIGNAL A 2 TRANSMITTED VOICE SIGNALS 3 SAMPLING PULSE TRAIN TIME SLOT A 4 SAMPLING PULSETRAIN TIMESLOTS 5 COMPOSITE PAM WAVEFORM TDM SPEECH HIGHWAY 6 SIGNAL A PAM WAVEFORM 7 SIGNAL S PAM WAVEFORM 8 RECEIVED VOICE SIGNAL A AFTER LOW PASS FILTER 9 RECEIVED VOICE SIGNAL S AFTER LOW PASS FILTER Figure 1. Principles of telephone switching by time-division multi- plexing (TDM) combined with pulse-amplitude modulation (PAM). As a first step the analogue telephone signals (1 and 2) are sam- pled by sampling pulse trains (3 and 4) and converted into pulses at fixed time intervals. The strengths of the analog signals are conveyed by varying the amplitude of each pulse. Thus numerous analog signals can be combined into a composite digital signal (5), which is sent over the speech highway. At the receiving end, the original waveforms are regenerated by extracting the two pulse trains (6 and 7), and low-pass filtering (8 and 9). plications in military communications equipment, in No. 1 ESS and in intercom equipment, the PULSE EPABX is the first self-contained PBX based on the TDM principle. Explaining various phases of development, Stansby said that Electronic switching techniques, both space division and time division, were evaluated and shown to be capable of realization at lower cost than electromechanical switch- ing networks using crossbar switches or reed relays. He said that other factors favoring adoption of electronic switching included: solid-state technology, which has achieved reductions in cost-per-function; compatibility with a solid-state common control from the network would permit the economic inclusion of memory capability; and greater flexibihty in growth of line and trunk capacity would be possible because the TDM network could easily be decentralized and physically distributed on a per-line basis. Tracing the technology behind the new EPABX, Stans- by said, It was Claude Shannon of Bell Laboratories who first pointed out that if a speech waveform, or any other time varying function, is sampled regularly at a rate at least twice that of the highest frequency component of the function, then the samples contain all the information con- tained in the original function. This means that the infor- mation in a continuous waveform can be transmitted as a series of short samples, and the time between samples can be used to transmit samples from other waveforms. Figure 1 shows how samples of several waveforms can be obtained and interleaved in time sequence on a single path, known as the TDM speech highway. Any of the original wave- forms may be regenerated by gating its samples from the highway. In the PULSE EPABX the voice information is con- tained in the amplitude of the samples; this method is known as Pulse Amplitude Modulation. The sample pulse energy can be efficiently transfeiTed from transmitter to receiver by making the resonant period of the transmitting and receiving network elements equal to twice the dura- tion of the sampling pulse. Thus, during the period when the sampling switch is closed, all the energy stored on the transmitting side of the resonant circuit flows into the re- ceiving side and is then prevented from returning by the opening of the switches. This technique is known as Re- sonant Energy Transfer (Figure 2). The central control consists principally of a single wired logic control block including a 25-word recirculating mem- ory. Each 48-bit word is permanently associated with a time slot, and contains binary coded information on the calling number, the called number, the state of the call and other calling sequence information of the call in pro- cess which is assigned to that time slot. As a word is shifted out of memory, the logic circuitry is activated to direct the necessary operation in the switching network and peri- pheral units. After the word is read out and operated on, it may or may not be changed in its configuration prior to being read back into the input side of the memory. When a call is terminated, the data in the memory word associ- ated with that call are erased, thereby making that time slot available for the next call. Continued on next page JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 43 MEANS FLEXIBILITY PLANT continued WARREN'S MOflULAR PUT IT ALL TOGETHER (if youll pardon the expression] Its an overworked phrase, but we cant resist borrowing it because our ringing power boards do exactly that they put together an entire, integrated sub- system on a single rack. And each board is designed to give you exclusive stan- dard features like these: Individual switching to stand-by equipment. If the primary unit of tone, ringing or interrupter malfunctions it is replaced with its stand-by circuit, rather than group switching to all stand-by units. Thus overall system reliability is improved many-fold. Customer connection panels. All leads except ground which connect the power board to the system it serves are terminated on the customer connec- tion panel at the top of the rack. Result: Easier, neater, faster installation. Documented checkout. All boards are completely tested before leaving Warrens plant. The point-to-point checkout procedure used is fully docu- mented for the customerforsystem understandingand maintenance purposes. Unprecedented flexibility. An extraordinary range of standard function panels is available to meet the requirements of virtually any system. Here is a partial list of such panels: GROUND BAR NEGATIVE BUS PANEL DISTRIBUTION FUSE PANELS DISTRIBUTION BREAKER PANELS SWITCH AND FUSE PANELS SWITCH PANELS ALARM & CONTROL PANEL ALARM PANEL METER PANEL END CELL SWITCHES LOAD DISCONNECT PANELS POWER BOARD PANEL LISTING FILTER PANELS CAPACITOR PANELS CUSTOMER CONNECTION PANELS INTERRUPTER PANELS INTERRUPTER TRANSFER PANELS APPEARANCE RELAY PANELS MARKING RELAY PANELS CONVERTER TRANSFER PANELS TONE GENERATOR & TRANSFER PANEL PRECISE TONE GENERATOR PANEL RINGING ALARM PANEL RELAY FOLLOWER PANEL INVERTER TRANSFER PANEL TONE COIL PANELS RINGING FUSE PANELS RINGING METER PANEL EQUALIZE TIMER PANEL CONTACTOR PANELS OFFICE ALARM PANEL TONE MONITOR PANEL RINGER TRANSFER PANEL Warren designs and manufactures a complete line of ringing power boards, power subsystems up to 10,000 ampere capacity, distribution, end cell, and counter-cell power boards, all capacities of ringing and tone plants. Want more information? Write or call today: Warren Communications, Littleton, Massachusetts 01460 Tel: (617) 486-3575 WARREN COMMUNICATIONS a A s Circle 144 on reader service card 44 ! TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 A programmable diode matrix provides the class of ser- vice for lines and trunks. This matrix is accessed by the control logic to determine the kinds of calls in which any particular line or trunk is allowed to participate. The speed of control operation enables line scanning not only for off-hook detection and supervision, but also for dial pulse detection. Detection of dialed digits is performed by scanning the lines, and, with appropriate timing mea- surements, determining dial pulses and inter-digital times for dialed number compilation. This approach replaces the use of dedicated and traffic-sensitive dial pulse receivers. Pulse reception is realized with a receiver dedicated to the line during dialinga compact circuit package being achieved by replacement of the LC filters by gyrators. Transmission over the single TDM highway is realized in a two-wire unbalanced configuration, added Stansby. The time partitioning of the TDM highway is 25 time slots in one frame interval, and each time slot is 3.33 micro- seconds long. Twenty-four time slots are allocated for calls in process, and one for scanning; hence, the system ac- comodates up to 24 simultaneous telephone conversations on the single highway, the frame interval is 3.33 x 25 = 83.3 microseconds. The switching capacity is 7.9 ccs (hun- dred call = seconds) per line for the 80 line system where 40 percent of all originating calls are intercom, increasing to greater than 30ccs per line at 20 lines. . During the 3.33 microseconds time slot period, approx- imately half the time is used for the interconnection of two peripheral circuits (line to line, line to trunk or line to at- tendant, and so forth). The remaining time is used to clamp the highway to ground, thereby eliminating cross- talk between adjacent time slots. The 83.3 microseconds CONTROL LOGIC Figure 2. Resonant Energy Transfer. Sample pulse energy can be efficiently transferred from the speech highway by making the resonant period of the transmitting and receiving network ele- ments equal to twice the duration of the sampling pulse. While the sampling switch is closed all the energy stored on the trans- mitting side of the resonant circuit flows into the receiving side. It is then prevented from returning by opening the switches. sampling period (i.e. 12 kHz rate) ensures a high trans- mission performance quality for voice or voiceband data. During time slot Number 25 of each frame, one line is scanned by the central control to determine its state, i.e. on-hook or off-hook. This means that the scan rate for lines in the maximum size system is one scan per 83.3 micro- seconds X 80 = 6.5 milliseconds. If the scanning require- ments for all trunks and lines are included, the worst case scan rate is approximately 10 milliseconds for detection of request for service. The basic unit, which has a capacity of 40 lines and 15 trunks, includes the cabinet, five of the eight possible equipment shelves, and the basic complement of printed circuit cards which are common to all systems. Two addi- tional connectorized equipment shelves expand the system capacity to its maximum of 80 lines and 30 trunks. Option- al service features are plug-in, and most can be installed directly in the basic unit. New Literature For more information circle key numbers on page 56. High Pair Count Cable LPI-3600 paper insulated telephone cable, as described in a four-page brochure, features extra high pair counts; as high as 3600 pairs in 26 gauge, plus new highs in 19 through 24. Because of a method of wrapping it longitudinally it maintains the smaller diameters of paper insulated cables. Anaconda Wire and Cable Co., Communications and Electronics Div. Circle 400 on reader service card Multi-Duct Concrete Conduit AU phases of specification and appli- cation of the companys multi-duct concrete conduit are discussed in a 20- page booklet. This booklet includes size availability, design and installa- tion information for both straight and curved runs and available fittings and adapters. Condux International, Inc. Circle 401 on reader service card Bit Error Rate Tester BERT-901 bulletin discusses typical applications and engineering features of a unit designed to test and evaluate modems, multiplexers, F.F. links, voice grade data circuits, T-carrier systems, disk memories and magnetic tape recorders. The four-page bulletin contains specifications, block diagrams for communication system testing and for evaluating digital equipment. II Communications, Inc. Circle 402 on reader service card Station Carrier Model D948 Subscriber Voice Multi- plex system is featured in a four-page brochure. D948 expands the capacity of four cable pairs to up to 48 single party circuits. It features 96 two party station with ANI, and up to 192 fom party station with either coded, multi- frequency, or superimposed ringing. Digital Telephone Systems, Inc. Circle 403 on reader service card Call Re-Director Product Bulletin 4003 featmres a Cen- tral OfiBce Call Re-Director that will automatically transfer incoming calls on one line to any pre-programmed number on an outgoing line. It holds incoming lines while out dialing on second line, then connects through at end of dialing sequence. G-V Con- trols, Div. of Sola Basic Ind. Circle 404 on reader service card Data Couplers Six data couplers are featured in a catalog giving a description of each, special features and specifications. All of the data couplers incorporate a fre- quency shift keyed oscillator and uti- lize active filter methods that provide maximum receiver sensitivity without the introduction of unwanted signal distortion. Design Elements, Inc. Circle 405 on reader service card Message Center Model 525 Message center is featured in a bulletin. In addition to providing 24-hour answering service, this in- strument will receive and record up to fifteen minutes of incoming messages, for later review or transcription. Ford Industries, Inc. Circle 406 on reader service card Safety Glass Security Glass, Acousta Pane Glass and Bullet-Resistant Glass for tele- phone company installations are de- scribed in a 12-page brochure. The literature tells what each glass is, how it works, where it works and gives complete specifications. Amerada Glass Co. Circle 407 on reader service card Bell Chimes Bell Ghimes are described in a bulle- tin. The units feature: fingertip selec- tion of melodious chimes; soft bell or loud beU; operate on conventional 40- 65 volt; and 20 Hz ringing supply. Northern Electric Co. Ltd. Circle 408 on reader service card Conference/Bridging System Literature is available describing a conference and bridging system that connects as many as five lines to- gether, and allows calls coming from outside to be transferred to other out- side locations. In data applications the Telepatcher allows the user to transmit information to more than one terminal simultaneously. Telephonic Equipment Corp. Circle 409 on reader service card Weighing Equipment A 12-page weighing equipment cata- log offering over 300 standard and special types of weighing equipment is available. The catalog has been de- signed to facilitate the proper selec- tion of weighing equipment for a va- riety of applications and includes in- formation on scales not available from other sources. Douglas Homs Corp. Circle 410 on reader service card Instrumentation Catalog The companys 33 products are de- scribed briefly in a 16-page brochure. Included are EMI/field intensity me- ters, RF current probes, antennas mi- crowave components, FM/AM/SSB communications test instrumentation, frequency meters, signal generators, tone generators and synchro/resolver test instrumentation. The Singer Co. Circle 411 on reader service card Communications Tools The most commonly used standard- stock precision adjusting, maintenance and production tools for electronics, telephone and communications appli- cations are described in Gatalog 250. Included in the 34 pages are gauges, pliers, soldering equipment, adjusters, burnishers and cleaners. Jonard Indus- tries Corp. Circle 412 on reader service card Modular Power Supplies Standardized Modular Power Sup- plies, ranging from 3.7-150 VDG Out- put are described in a revised 16- page, two-color brochure. Included in the catalog are racks, panels, meter combinations, over-voltage crowbar and other optional accessories with complete dimensions, specifications and prices. North Electric Co., Elec- tronetics Div. Circle 413 on reader service card 1000-Channel Scanner System Literature on a 1000-channel capacity 606 Scanner System is available. The system is comprised of a master and slave scanner, and sequentially or ran- domly samples up to 100 channels of low-level two or three-wire data, or up to 50 channels of four or sLx-wire data. Vidar Corp. Circle 414 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT | 45 New Products For more information circle key numbers on page 56. Noise, Spectrum Analyzer Model T132 is a portable combination noise measuring set and selective volt- meter which may be used with built- in sweep circuits for spectrum analy- sis in the frequency range of 20-20,- 000 Hz. Flat, C-Message and TIF weighting are included to facilitate noise measurements and the analysis repair shop, transfers calls from unat- tended offices to private homes and corrects directory listing errors. When in the operative condition, the call re- director automatically transfers calls without the calling party being aware of the transfer. G-V Controls. Circle 702 on reader service card Automatic Stack Feed is started through the unit, activating the remote, unattended receiver(s). The other copies are automatically fed through the unit. The stack feeder ac- cepts up to a %" stack of mixed docu- ments in one loading. Telautograph Corp. Circle 703 on reader service card 2400 BPS Data Modem Model TE-236 data modem operates at 2400 bps over unconditioned voice circuits or the dial-up network via data access arrangement. Bit synch- ronization time is 10ms. Bit error rate is lx 10'. Reliability is 20,000 MTBF. Integral test control instantly isolates all problems to the data ter- minal equipment, the telephone line, or the modem. Collins Radio Co. Circle 704 on reader service card Shielded Patch Cords Developed for miniaturized tele- phone, tele-communications and patching applications, a new series of of harmonics of power line frequen- cies induced in telephone circuits. Wilcom Products. Circle 700 on reader service card A new Automatic Stack Feed is a built-in, fully integrated feeder for users who send more than one docu- ment at a time, and requires little op- erator time. The first copy of the stack Data Circuit VF Amplifier Model NE-227D V. F. amplifier for use in high speed, low error rate data circuits provides low frequency delay distortion and reduced sensitivity to impulse noise. The design gives longi- tudinal balance at 1000 Hz >70 dB and >60 dB over the full range. Northern Electric Co. Ltd. Circle 701 on reader service card Call Re-Director A new, solid-state call re-director is designed for central office installation and is capable of re-routing telephone calls from one telephone number to another. The device makes possible the re-routing of repair calls to central 2- and 3-conductor shielded patch cords has been designed for the com- panys tini-telephone jack panels and equivalent. TT-840 (3-circuit) and TT-860 (5-circuit) Patch Cords can be specified in a variety of types and lengths from 6" to 6' for interconnect- ing applications requiring 3 and 5 cir- cuit twin patch cords. Switchcraft Inc. Circle 705 on reader service card Microwave Power Meter Model 432B Microwave Power Meter adds digital readout and BCD (binary coded decimal) output to the com- panys thermistor power meter. Model 432C augments those features with autoranging and programmability, forming a new systems-oriented mi- crowave analog-to-digital converter- plus-meter. The new meters both use the same thermistor mounts as the HP Model 432A and the com- panys earlier 431 series of power meters. These mounts give coaxial coverage from 1 MHz to 18 GHz, and waveguide coverage from 2.6 to 40 GHz. Hewlett-Packard Co. Circle 70E on reader service card Data Modems Two modems that provide flexible communications over telephone lines between remote terminals and a cen- tral computer have been announced. Model 3872 modem can operate over either private communications lines or the public dial network, permitting flexibility in setting up a tele-process- Continued on page 48 45 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 WHETHER YOUR EQUIPMENT PROBUEM IS BjLQ iJm f I' 1 TERMINAU EQUIPMENT EXCHANGE IS THE SOLUTION ! ! I Terminal Equipment Exchange is a full-service broker of data communications equipment. We specialize in: Teletypewriters (All Models) ITEL 1051 Data Terminals Visual Display Units Low Speed Modems We buy and sell both new and used equipment and we completely recondition the used units to like-new specifications before offering it for resale. In fact, well give you an unconditional warranty on any machine we sell. We have available a nationwide network of mainte- nance centers, we are able to keep our prices well be- low manufacturers retail and promise immediate de- livery. Compare this to the approximate four months it takes for delivery from companies much larger than T.E.X. Terminal Equipment Exchange, Inc. 2860 WALNUT HILL LANE SUITE 108 214/358-2541 DALLAS, TEXAS 75229 Circle 147 on reader service card PROTECTING THE BEST THINGS IN LIFE IS NOT EASY When you own something that you are proud of, you naturally want to show it off. However, showing if off can attract undesired attention and results. Pay stations are proudly displayed and are subject to all sorts of dangerous elements. Magnolia's newest product, PROTECT, forms a protective film that stops aging on chrome, aluminum, brass, stainless steel, painted surfaces and fiberglass. PROTECT also stops oxidation on metal and aluminum, prevents corrosion on ignition systems, electrical equipment, and circuit boards. For high visibility safety markers on emergency vehicles, road markers, safety helmets, fire extinguish- ers, switch boxes, and high voltage areas. Magnolia offers SAF-GLO ORANGE RED FLOURESCENT WARNING PAINT. MAGNOLIA SAF-GARD CLEAR PLASTIC pro- tects painted surfaces, waterproofs ignition systems, terminal boxes and all electrical connections. MAGNOLIA SCAT RODENT REPELLENT pro- tects cable and wire coverings from squirrels, mice, chipmunks, gophers and other rodents. MAGNOLIA DOG STOP protects your work crews from vicious dogs. DOG STOP has a unique "press- top" spray head that eliminates cap removal prior to use. DOG STOP has a range of 10 to 15 feet and gives a stinging effect to the eyes, nose and mouth. DOG STOP is U.S.D.A. registered as not permanently harm- ful. No matter what it is that you are showing off. Magnolia has a product to protect it, providing you want it protected. 2646 RODNEY LANE P.O. BOX 20179 PHONE CH 7-7111 DALLAS, TEXAS 75220 TAMPA, FLA. FORT WAYNE, IND. ERIE, PA. Circle 130 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 47 MAGNOLIA CHEMICAL COMPANY, INC. PRODUCTS continued ing system. The higher-speed Model 3875 modem operates primarily over private communications lines. Interna- tional Business Machines Corp. Circle 707 on reader service cird Subscriber Terminal Shelf Concentrated installations of S6A sta- tion carrier subscriber channels are now possible with two versions of a subscriber terminal shelf. The 23" subscriber terminal shelves provide a means for mounting up to seven chan- nels of single party service or bridged frequency ringing equipment at one location. The shelves are designed for mounting in equipment cabinets or in a standard 23" rack. Anaconda Elec- tronics. Circle 708 on reader service card CHANNELLOCK Gives You More In Hand Tools Including FULL POLISH FINISH (quality you can SEE) The honest gleam of drop forged steel, fine polished end to end. No plating, no black handles, no good enough compromise anywhere. Craftsmanship in every detail. Quality you see, not just hope for. CHANNELLOCK'S bonus to you at no extra cost. HERES MORE. Our catalog gives you an arm-chair review of our complete line. Its yours for the asking. TOOLS BY . EnuJcngMa MEADVILLE, PA. 16335 Circle 148 on reader service cerd 48 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 T-1 Carrier Cable Plus 2, a new telecom- munications cable for T-1 carrier systems, features two compartments for electrical separation of pair groups plus two extra pairs, one for repeater in- terrogation and one for voice order wire. All pair counts of the cable are said to allow 100 percent of the pairs to be used for T-1 Carrier systems, with transmission in both directions at max- imum repeater spacing. Anaconda Wire and Cable Co. Circle 709 on reader service card Filled Telephone Cables Type WT Filled Telephone Cables are interchangeable with standard telephone cables and may be con- nected to pressurized systems without additional blocking. The cables are filled with Water-Bloc, a polyolefin compound that is chemically and elec- trically compatible with all other ma- terials in the cable, stays soft and pli- able and completely coats each con- ductor, totally filling the air space within the cable. Superior Cable and Equipment Div. Circle 710 on reader service card Connector Presser Model CP 200 is designed to press B wire connectors on unstripped wire pairs. A factory set mechanical stop prevents over-pressing and a built-in ratchet assures that a complete clos- ure is made before the presser can re- open. A gage for checking the finished connection is also built into the pres- ser. O. K. Machine and Tool Corp. Circle 711 on reader service card Self-Locking Cable Tie Ty-Rap Ty-29M Cable Tie is designed to meet the demand for an easy to apply means of securing electrical or electronic wiring in outdoor or indoor locations that will accommodate wir- ing ranging from a diameter less than Vi' to a maximum of 9". The extra large capacity, high-strength, self- locking cable tie will bind and support large numbers of wires or cables with a strength in excess of 200 lbs. It fea- tures a wide strap and self-locking head made of high strength nylon ma- terial. Thomas ir Betts Corp. Circle 712 on reader service card Service Tool Set Major tools for production, service and repair of all electronic and other type equipment are included in a 20- piece precision tool set. Model K-600. The case is compact for easy portabil- ity11" long, 6" wideand the weight is two pounds with tools in- cluded. Jonard Industries Corp. Circle 713 on reader service card Wire/Cable Marking Kit Multi-Code is a new wire, cable, com- ponent and part-marking kit. The bench model, No. TMCC, is pre- packed with ten cartridges of tape preprinted with ten separate letters, numbers, symbols or any combination desired. The tape is plasticized, printed legibly and is pre-gummed with high-tac adhesive for instant use. A portable unit for field use, which measures SVa" x 2" x IVs", weighs eight ounces, and clips on a belt, is also available. The Zippertub- ing Co. Circle 714 on reader service card Key, PBX Power Supplies Two power supplies have been added to the companys line for key systems, small switchboards and private line use. The EAK-2 (shown) combina- tion power and ringing supply pro- CUT INSTALLATION TIME AND COSTS... YOUR AMPHENOL TELEPHONE PRODUCTS DISTRIBUTOR HAS THE ANSWERS vides 30 Hz ringing power of 95-118 VAC at 0.2 Amp. The EBK-2 unit does not contain ringing power. Both models provide 22 to 26 VDC at 1.0 Continued on next page Amphenol Telephone Products are now available for fast delivery through a national network of distributors. Save time and costs with top quality pre-assembled parts and components. Amphenol Sys- tems help your installers complete multiple jobs in less time than originally need for one. Your ATPD can provide Amphenol connectors, running cables, call boxes and bridging adapters. Adapters for special purposes too: crossover, terminal strip, feed through, 6-button and non-key. For full information on Amphenol Telephone Products (Catalog ATD-1) and the name of the Amphenol Telephone Products Dis- tributor nearest you, write to: A.T.D. Amphenol Sales Division 2875 S. 25th Avenue Broadview, Illinois 60153 (^AMPHENOL Circle 149 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 49 PRODUCTS continued This valuable book contains . . . The 1971 Buyers' Guide The 1971 Directory of Suppliers Industry Statistics Directory of the USA Telephone Industry Directory of Telephone Associations Bell System-Independent Relations Staff Directory of Regulatory Commissions Directory of REA Statistics . . . Telephones of the World Directory of Foreign Telephone Systems PRICE SCHEDULE Single copies . .$20.00 each* Two copies ------$17.50 each* Three-10 ........$14.50 each* Quotations for bulk *Plus J1.50 per copy charge for shipping and handling. Order copies for key personnel todayi Telephone Engineer & Management 402 West Liberty Drive Wheaton, Illinois 60187 Please send ----- copies of the 1971 Telephone Engineer and Management Di- rectory to: Name__________________________________ Title_________________________________ Company_______________________________ Address ______________________________ City-----------State________Zip_______ Q Bill me Bill my company Q Check enclosed Order today! TE&M'S new 1971 DIRECTORY Piston Fastening Tool An automatic powder-actuated piston fastening tool, capable of completing 20 fastenings a minute, has been de- veloped. Twenty drive pins and 10 customized for all applications to minimize installation problems. American Pamcor, Inc. Circle 718 on reader service card energy pellets the size of shirt buttons are major features of the 7220 low- velocity piston tool. Two belts of 10 fasteners each are loaded into a fas- tener drum fastener attached to the tools front end. A spring-loaded fastener follower in the drum auto- matically feeds a fastener one at a time into the tools chamber. Ramset Fastening Systems of Olin Corp. Circle 716 on reader service card Electric Mini-Ladder A new electric Mini-Ladder is opera- tional from the bucket and will drive through a 3' door, giving working 60-270-Line PBX Model ARD-561, a private branch e.x- Amp talking output, 22-26 VDC at 3.0 Amp signaling output and operate on 117 volt, 60 Hz single-phase power. Elgin Electronics Inc. Circle 715 on reader service card Built-In Modems Optional built-in manual originate, an- swer modems are offered with the companys lower-speed terminals. These modems provide compatibility with the Bell Systems 101, 103 and 113 data sets. With total integration of the modem function into the data ter- minal, duplication of unnecessary components has been eliminated. Teletype Corp. Circle 720 on reader service card height up to 20'. This unit projects over islands of material. It is counter- balanced by the batteries and requires no outriggers. Van Ladder, Inc. Circle 717 on reader service card Cross-Connect Block A new cross-connect block can be mounted in pedestals, house boxes or on poles. The block is available in a variety of configurations that can be Users of the 1971 TE&M DIRECTORY will have over 800 pages of essential in- formation at their fingertips . . . carefully indexed and organized for instant use. Communications Test Sets Four new com- munications test sets include two small enough to fit in the users hand for opera- tion with all tele- printer, data ter- minal, modem and telegraph transmission facil- ities. Model 404 Pattern Generator and Data Analyzer (shown) each weigh less than four pounds. The office version of the 404 test sets is the Model 303A Pattern Generator and Data Analyzer. Data Products Corp. Circle 719 on reader service card -SO [ TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 change, has been designed to provide maximum service and flexibility for the customer requiring less than 270 extension lines. The unit combines a telephone PBX and an advanced inter- com into one complete package. It is available with a number of standard features which include Dial 1 In- quiry and Transfer, Universal Night Answer and Attendant Recall. United Business Communications, Inc. Circle 721 on reader service card Wall Telephone Booths Teledome, a wall telephone booth made from acrylic, enables telephone conversations to be made at normal voice level. Being transparent, it does not appear to intmde into reception areas and the vision of people using the booths is unrestricted. Marvelcraft Pty. Ltd. Circle 722 on reader service card Line Card File Accessory An accessory addition to the com- panys Line Card File has been an- nounced. The Expanda-File top deck unit is a modifled posting board that rolls easily and holds three to four line card trays depending upon line card size. This top deck unit can move next to or in place of the standard posting board. Delco Associates, Inc. Circle 723 on reader service card Twin-Extrusion System A high-capacity twin-extrusion system for manufacturing 4" polyvinyl chlo- ride plastic telephone duct has been announced. A twin extruder die is a basic component of the new four- screw high-capacity extruder. The re- sult of the twin-tube design is an ex- truder which produces better than 1000 pounds of extrudate per hour which is then divided equally between twin die heads. The Anger Plastic Ma- chine Co., Subsidiary of Bemis Co., Inc. Circle 724 on reader service card Calling/Answering Unit Five to 20 communi- cations lines can be op- erated unattended un- der computer control by an automatic calling and answering unit. It requires only one-quar- ter the floor space of equipment providing equivalent capability. Featuring printed-cir- cuit-card design, the compact, solid- state ACAU allows computers to an- swer calls and make calls automatical- ly over the DDD network. Telepro- cessing Industries, Inc. Circle 725 on reader service card Circle 151 on reader service card WRITE OR CAU FOR INFORMATION TELEPHONE iSSS ENGINEERING SIMPSON, PA. 18407 PHONE: (717) 282-5100 DIAL or TOUCHTONE PHONES REBUILT LIKE NEW ^uatanteed Single, Double or Multi-line petGo cable slack puller The Fast, One-Man Way To Pull Slack and Rack Cable This simple tool makes pulling slack and racking cable an easy job. Even with 600 ft. of 3-in. cable on either side, slack can be pulled in less than 15 minuteswithout wrinkling or damaging cable. Fold-up design makes easy to use in small manholes. Write For Details To .. Oausca m P.O. BOX 1200 INDEPENDENCE, MO. 64055 Circle 131 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT 1 51 People in the News BARTLETT TEFLON-S* PRUNING SAWS New Formula Black Coating Provides Non-Stick, Self-Lubricating Finish Which Eliminates Binding In Green Wood, and Prevents Rust SPECIAL UTILITY SAWS Nos. T-124B AND T-114BD Fast, smooth cuts with husky teeth, 4 jjoints per inch. T-124B has 24 inch blade; T-114BD, 26 inch blade. Both are equipped with laminated handle with extra large hand-hole. No. T-114B SPECIAL UTILITY SAW Same as T-114BD except with horn at top of handle. 4 points per inch. 26 inch blade. *DuPont Trademark Catalog free on request BARTLETT MANUFACTURING COMPANY Phone (Area Code 313) 873-7300 3052 E. Grand Blvd., Detroit, Mich. 48202 Circle 152 on reader service card NEW VENTURE FINANCING Up to $500,000 available to telephone and communi- cations equipment start-up activities. Products must have sales potential greater than $2 million. Inquiries should include brief, general description of the product and market. P.O. BOX 539D Orange, Calif. 91666 Ace Telephone Association promoted Robert W. Bunke, general manager, to executive vice president-general manager, and Joseph L. Coulson, commercial manager, to assistant gen- eral manager . . . Robert H. Snedaker, SNEDAKER MITCHELL Jr. has been named president of United Telephone Company of Ohio. He formerly was vice president and general manager for the Southwestern Area of Ohio Bell . . . North Electric appointed Terry Mitchell, sales en- gineering group, to the position of ac- count executive Telecom sales, pro- viding liaison, service and engineer- ing coordination with the operating telephone companies of the Continen- tal Telephone System . . . T. P. Wil- bamson, general commercial manager, has been elected assistant vice presi- dent of Carolina Telephone and W. T. Jones, general commercial supervisor, will succeed Williamson . . . John I. Lehman, general accountant on the controllers staff, has been named to the post of senior financial analyst on the corporate development staff of United Utilities, Inc. . . . John W. English, general sales manager for the Cable and Equipment Div. of Su- perior Continental Corp., was named ENGLISH REECE to head the sales efforts of that divi- sion, Whitney Blake Co. and Republic Wire and' Cable Corp., and Joel L. Reece has been named general man- ager of the Cable and Equipment Div. . . . Graybar Electric Co. has opened a new Branch office and warehouse in Billings, Montana. K. M. Wilkins has been appointed manager and G. H. Vaughan operating manager. Other appointments are; K. W. Kuhns, dis- trict supply marketing manager in Los Angeles, and branch managers as fol- lows: K. L. White, Phoenix; J. T. Russo, Tucson; A. F. Stuart, Van Nuys; D. C. Stamer, Mobile and J. J. Travis, Butte . . . Robert C. Wilson, formerly executive vice president- Electronics and Industrial Products Groups with North American Rock- well, has been named president and chief executive officer of Collins Radio Co. . . . L. T. Roy Cushman, presi- dent of Cushman Electronics, Inc., has retired and Harold Anderson, vice president and national sales manager, will assume the additional responsi- bilities of general manager . . . Larry Moad, division sales manager, was named national sales manager for JONASSEN MOAD Benner-Nawman, Inc. . . . G. D. Jonassen, vice president of operations, has been elected executive vice presi- dent of Telecommunications Indus- tries, Inc. . . . Gerald F. Wicks, sales representative, has been named dis- trict manager-New Orleans for The Okonite Co. He succeeds William B. Stroud who joined the companys manufacturing division as engineer- tests in Richmond, Ky. . . . Dave Birt- well has been named advertising man- ager for Carlon Products Div., Con- tinental Oil Co. . . . News from Quindar Electronics, Inc.: Don Olsen has been named communications product manager and Stanley Green, senior development engineer, has been appointed to direct the companys R & D effort in data communications. . . . Hugh A. Latimer, assistant vice president-state regulatory matters for AT&T in New York, was elected a vice president of Illinois Bell Tele- phone Co. 52 I TELEPHONE ENGINEER & MANAGEMENT, JANUARY 1, 1972 Heres your guide to the telephone industry's leading professional service organizations. Refer to this section of TE&M when your com- pany requires the assistance of top consultants. Professional Services Circle 500 on reader service card PROFESSIONAL COMMUNICATIONS SERVICES TELEPHONE ENGINEERING TRAFFIC STUDIES MICROWAVE EMERGENCY RESTORATION SERVICE TELCOM ENGINEERING INC. 'JUconi Ralph E. Willey, Communications Consultant specializing in data sys- tems design and maintenance, to- gether with training in data commu- nications. 3733 10th Ave. South, Min- neapolis, Minn. 55407. Telephone: (612) 823-9038 or (218) 692-3361. Circle 505 on reader service card CONSULTING COMMUNICATIONS ENGINEERS, INC. C. Raymond Kraus, President A group of experts from the Bell System Guidance, Counsel, Studies, Programs, Expert Testimony Quality of Service De- termination Mergers Seminars for Telephone Executives Interconnection 845 Mt. Moro Rd., Villanova, Pa. 19085 215 525-8445 ITC ENGINEERS, INC. Communications Division REGISTERED ELECTRICAL ENGINEERS LICENSED GENERAL AND ELECTRICAL CONTRACTDRS CATV-CCTV Central Office EngineeringInterface DesignOutside Plant Design- Strand MapsRoute Field Surveys Communication DraftingCable Pair CountsRecord UpdatingGenerai ConstructionElectrical Contracting. 9 First Street Suite 227 San Francisco, Cailfomia 94105 Phone: (415) 391-2651 Circel 507 on reader service card lOm MANCHESTER RD., ST. LOUIS, MISSOURI 63122 AC314-966-2116 Circle 501 on reader service card Circle 506 on reader service card TELEPHONE INDUSTRIES, INC. P.O. Box 481 Ballinger, Texas 76821 Phone 915-365-2555 Automatic-ElectricStromberg CarlsonFederal New Used Re-conditioned lines, selectors, connectors, trunk, repeaters, shelves, banks, PBXS, switchboard, tollboards, carrier, filters, telephonesall types JOB SHOP ITEMS We buy surplus C. 0. equipment. Circle 502 on reader service card TELECOMMUNICATIONS TRAINING by CONTINENTAL COMMUNICATIONS CONSTRUCTION CORPORATION Subsidiary of Areata National, Corp. Now offering training on customer premises and at modern training facilities in Tampa, Florida. Training programs offered include COE MAINTENANCE, CXR, DATA, ELECTRONIC SWITCHING, ENGINEERING, MANAGEMENT and many others. Inquiries for further information are invited. Call Collect 813-877-8866, R. F. Leslie, Director of Training, 5440 Mariner, Suite 221, Tampa, Florida 33609. Circle 503 on reader service card TELEPHONE REPAIRING, RECONDITIONING, CONVERSION CEAC makes old telephones like new...recondi- tioning, repairing or conversion on telephones, key instruments, pay-stations, dials, ringers, electronic secretaries, telephone answering devices, line cards, power supplies. Other CEAC Services: Design and production of: nuisance call circuits, service observing recording systems, automatic call distributors, toll diversion circuits, meter register appliques and other similar custom designed circuits and equipment. "Telephone men for the telephone Industry" COMMUNICATION EQUIPMENT AND CONTRACTING CO., INC. 1500 East Conecuh St., Union Springs, Alabama. Phone 205-738-2000 Circle 504 on reader service card Professional Engineers Contractors Central Office Installation CablB SpIlMTt, Plant Craws, Installer Rapairmen 1800 N. JOHNSON ST. I I ELKHART. tWD. J CO 4.1121 TELEPHONE! I HENKELS & McCOY BLUE, BELL, PA. Circle 508 on reader service card COMTRONICS CDRPDRATION ENGINEERING AND TECHNICAL SERVICES 133 Commercial St Sunnyvale, Calif. 94086 (408)7384)840 Circle 509 on reader service card CORDLESS DRILL FOR GRINDING, BUFFING, POLISHING, DRILLING, WIRE STRIPPING No cord to 9et twisted or trip over! For ail llght-duty jobs. An accessory chuck takes drills and work tools from 1/32 to 1/8". Charging console In- clude. BROCHURE' P627 DRILL............$44.50 W-105 CHUCK.............3.99 fw ------- ELECTRONIC ASSEMBLY TOOLS TOOX-S and .A.LLOYS 4117 N. 44fh Street, Phoenix, Arizona 8S018 Circle 510 on reader service card JANUARY 1, 1972 TELEPHONE ENGINEER & MANAGEMENT I 53 Market Place CLASSIFIED RATES: 35