1138013D SUL COMMUNICATIONS ENGINEERING & DESIGN THE PREMIER MAGAZINE OF BROADBAND COMMUNICATIONS rn g - • • g '.. '• • ... iffl• . 4. •• • • .c E • 7 • e . •. .- - 2... • • - • . DO PCS, . * ,. W HAT a. .... .e • ... • e . i— -be e• • • • • • • INTERNET ACCESS elm 0g-;:l‘ '...... ; . •• • .. e. tz. ea r t ,?.-..• 4: 1 ‘.!, i' f _ Le rttb AND BROADBAND .—.. ;ev en S . TELEPHONY C . HAVE IN COMMON WITH PIZZA AND BALLOON GRAMS? Ho 1 nt 00 gI r so utio NOW YOU CAN DELIVER THEM ALL IN A SINGLE VEHICLE. WITH THE SUPER-RELIABLE AT&T 5ESS-2000 SWITCH AND OUR NEW 5E10 SOFTWARE. When you're adding telephony and data services to your cable system, you need the most versatile, most reliable switch and software on the market. The AT&T 5ESSe)-2000 Switch. And our new 5E10 software. Only the 5ESS Switch lets you combine landline and wireless on the same switching platform. So you can offer landline features to wireless customers. It also has Advanced Intelligent Network capabilities. Which gives you the advantage of offering "follow-me" numbers to your PCS customers. Plus, our new 5E10 software allows fast, easy provisioning of high-speed Internet access. And adds residence features like enhanced Call Waiting, which identifies the calling party before customers interrupt their current call. And with the 5ESS switch and software your investment is always protected. New services can be offered without upgrading hardware or waiting for anew software release All this on the most reliable digital switch in the world. Whose nearest competitor, according to FCC data, had over four times more downtime. The 5ESS-2000 Switch and 5E10 Software Release are available now. Call your AT&T Network Systems representative for more information Everything you need. To do everything you want. AT&T Network Systems ©1995 AT&T Circle Reader Service No. 1 * N PERSPECTIVE M AGAZINE Cable system operators today stand on aprecipice, overlooking the opportunities that lay before them. Perhaps never in its short but VP Group Publisher illustrious history has the cable industry had so many doors to pon- William McGorry der: high-speed data delivery and Internet access; telephony; interac- Publisher Robert C. Stuehrk tive services; and expansion of pay-per-view toward anear Editor video-on-demand environment. Roger Brown, [email protected] Choosing which applications and services to pursue first Managing Editor isn't easy, but that's the marketing department's challenge. Dana Cervenka What the engineering community has to ensure is that the Contributing Editors infrastructure is in place to support such services—and today, Leslie Ellis, [email protected] Fred Dawson it's doubtful. Tree-and-branch cable systems have too many single points of failure, active electronics have mean times CONSULTING ENGINEERS before failure that are less than acceptable, there's little in Chairman Wendell H. Bailey, NCTA VP, the way of backup electronics in most headends and there Science and Technology are problems in the power grid that takes service down MEMBERS much too often. Clearly, there's alot of work to be done. Jim Chiddix, Senior VP, Engineering and Jones Intercable just fired up its newest headend facility Technology, Time Warner Cable in Alexandria, Va. It could be argued that Jones chose that Stephen D. Dukes, VP, Technology, TCI Technology Ventures high-profile system to be its flagship, based on dense hous- David Fellows, Sr. VP, Engineering and ing, great demographics and probably because of its prox- Technology, Continental Cablevision imity to the nation's capital and lawmakers. But it's also Tom Jokerst, Sr. VP, Engineering, Charter under attack from Bell Atlantic, the local telephone Communications Amodel for Earl Langenberg, Executive Director, Growth provider, which has targeted the area as one of its beach- Division, US West Communications heads in the battle for marketshare. In response, Jones had Dave Large, Principal, Media Connections reliability to build ahighly reliable network in order to compete. Group The point is that Jones' new headend is an impressive Robert Luff, Chief Technical Officer, facility and will likely serve as amodel for the rest of the Broadband Division, Scientific-Atlanta Pete Smith, VP Engineering, Rifkin & industry. Everything in the 750-MHz system is new, of built in Associates course, but that's not what makes it unique. It's the level Joe Van Loan, Sr. VP, Engineering, CableVision and amount of quality and redundancy that the Jones engi- Industries neers have designed into the headend and the plant that National Sales Manager Alexandria make one stand up and take notice. Clearly, Jones is mak- Cathy Wilson ing astatement to Bell Atlantic that it has built anetwork that is sur- Advertising/Marketing Manager Scott C. Sny(ler, [email protected] vivable and capable of being more reliable than the incumbent's. Classified Sales Manager The reliability message is driven home in several places, including: Tim Reeder V In the plant, where 10 counter-rotating rings of fiber serve the 28- 800/866-0206 square-mile community. Assistant to the Publisher V In the bank of Scientific-Atlanta frequency agile modulators that Michelle Pitear have hot standby units ready and waiting to step in if afailure occurs. Production Manager V Within the fiber nodes themselves, each of which is outfitted with Elaine Callahan standby power supplies and status monitoring. Art Director V In the headend, where Barco has installed its ROSA software sys- Doll Ruth tem that monitors the performance of the satellite receivers. Address V In the fiber optic management system designed by Fiber Optic 600 S. Cherry St., Suite 400 Denver, CO 80222 Network Solutions that terminates nearly 3,000 fiber strands in the 303/393-7449 headend. Circulation Director What Jones has done in Alexandria is carry out the exact steps Maria Gottlieb (212) 887-8565 most MSOs are simply giving lip service to. Yes, it's more expen- Fulfillment Manager sive, but Jones believes it can't cut corners in the race to provide Shaun Green (212) 887-8564 multimedia and telephony services to its subscribers. Subscriber services CED In the words of Roger Seefeldt, afund engineer from Jones' corpo- P.O. Box 10728 rate headquarters who helped with the project, the headend in Riverton, NJ 08076-0728 Alexandria is the headend of the future. It's hard not to agree with him. Telephone: 609f786-0501 Fax: 212/887-8493 CHILTON PUBLICATIONS Leon C. Hurnagel. Jr.. President Donald W. Chestnut, Sr. VP, Ops/Admin. Christopher M. Savine, Sr. VP Finance Bill O'Brien, Sr. VP Communications Group Roger Brown Editor V BPA T HE P REMIER M AGAZINE OF B ROADBAND C OMMUNICATIONS O CTOBER 1995 5 P' CABLE Take The Heat Off System Testing Troubleshooting with Sencore's NEW line of signal level meters will help you take the heat off testing all your system parameters. PROGRAMMABLE FUNCTIONS MEAS JREMENTS EI The SL 754 "CHANNELIZER" Features: All Freq./Channel Tuning from 5-810 MHz Extended Measuring Range from -35 to +60 dBmV Channel Planning Capabilities for custom channel planning or choose from 8pre-set channel plans The SL 753 "CHANNELIZER" Installer's Meter Features: Automatic Pass/Fail Testing of all system parameters including: All Freq./Channel Tuning from 50 to 810 MHz Tilt Max AN Ratio (5-810 MHz with sub-band option) PN Min. C/N Level Extended Measuring Range from -35 to +60 dBmV Flatness Max. Hum Signal Quality Tests includes video and audio carrier, plus Ch. to Ch. Variation All Ch. to Ch.Variation "on channel" % of Hum Rugged Design for use in all types of weather conditions Channel Planning Capabilities for custom channel planning Circle Reader Service No. 2 or choose from 8pre-set channel plans Rugged Design for use in all types of weather conditions Both the SL753 and SL754 are covered by Sencore's New 3 Yen Extended Warranty For More Information, Call 1-800-SENCORE! (736-2673) Sencore 3200 Sencore Drive, Sioux Falls South Dakota 57107 - Phone (605)339-0100 or 1-800-736-2673 - Fax (605) 339-0317 Meeting The Worldwide Demand For Excellence The introduction of unique MC' coaxial cable by Trilogy Communications clearly opened a new era of excellence in CATV development and construction. Trilogy proved that an air-dielectric cable could be designed to maintain a 93% velocity of propagation, while assuring greater strength and flexibility than traditional foamcore cable. The 100% bonding and hermetically-sealed compartments of MC' reduce moisture ingress and migration to the lowest incidence and degree ever encountered in the field. To date, over 1.5 billion feet of MC' have been installed worldwide. , The 93% velocity of propagation and superior attenuation of MC' provide much more than the purest signals over 1St the longest distances. MC' provides great savings as well: about 20% fewer amplifiers; less cable waste over long distances; use of one size smaller than would be required for foamed trunk and feeder, meaning more cables per duct, longer lengths per reel — with 30% less shipping weight than foam. Whatever your drop cable requirements may be, Trilogy's "Total Quality" manufacturing program assures the highest levels of performance and durability. And the Trilogy tradition of excellence continues straight through to service and delivery, with the absolute best guarantees in the CATV industry. From innovation to installation and beyond, Trilogy greets the world with the confidence of a true leader. Sending The Right Signal liilogYt5 Call or write for free sample and brochure: Trilogy Communications, Inc., COMMUNICATIONS INC. 2910 Highway 80 East, Pearl, MS 39208 (601) 932-4461 Fax (601) 939-6637 Circle Reader Service No. 3 C ONTENTS FEATURES 42 Prepping the project By Jeff Michaud, Cable Constructors Inc. A cable contractor advises operators on managing joint con- struction projects.