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`A Glossary of
`Teiecom Acmnyms,
`Terms and Jargcn
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`
`edited by Harry Newton
`j
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`PMC Exhibit 2144
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`Apple v. PMC
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`PMC Exhibit 2144
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`The TELECQNNEC‘E‘ Diciiohery
`Arr Emiahetioh of Teiecommuhiceiione
`ierrrre, Acronyms and Jargon
`
`The TELECGNNECT Guide To Series includes:
`The TELECONNECT Guide to:
`Automatic Call Distributors
`Business of interconnect
`How to seli Call Accounting
`1m Money~Saving Secrets Your Phone Company Won’t Tell You
`Professionai Selling
`Profit and Control Through Call Accouniing
`Teiecommunicaiions Management For Business and Government
`T-‘l Networking
`Which Phone System Shouid l Buy?
`
`TELECGNNEC‘T Magazine
`A monthly telecommunications magazine. You may subscribe for $15 a
`year. Cali in your subscription and book orders (with your credit card number)
`to 1-800»LIBRARY.
`
`FREE Cetaiogs of “i'eiecom, LAN am! Pc Books
`Telecom Library, our parent company, distributes The TELECONNECT
`Guide To series and 106 other books in the telecommunications and data
`communications industry. The Telecom Library is the industry’s central source
`of books and publications. You may receive a FREE copy of our latest
`catalogs by caliihg 212-691-8215 or by dropping a line to Ralph Florida at the
`address below.
`
`Quantity Purchases
`if you wish to purchase this, or any other books in quantity, please
`contact:
`
`Ralph Florido, Manager
`Teiecom Library Inc
`12 West 21 Street
`New York, NY 10010
`i—SOO—LlBRARY or 212-691-8215
`
`Copyright ©1987 by Harry Newton and The Teleoom Library Research Group.
`All rights reserved.
`Printed in the USA. by Bookcrahers, Cheisea, Ml
`
`PMC Exhibit 2144
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`Apple v. PMC
`|PR2016-00755
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`PMC Exhibit 2144
`Apple v. PMC
`IPR2016-00755
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`TELECGNNEC’T DECTEQNARY
`
`have been spied for under $‘i,000. From the tirst portable units,
`weight has already dropped by more than halt. There’s at least one
`unit that wilt fit in your breast pocket and not overly stretch your suit.
`
`someone fififltfi $W§§®h§ih§$ @Ffififi: The electronic
`switching office which switches cells between cellular (mobile)
`phones and wireline (Le. normal wired) phones. The switch controls
`the “hendoti” between cells and monitors usage. Different manuieo
`turers ceil their equipment different things, as usual.
`
`QEN‘EEE. €®RP® TEQN: An independent telephone company
`serving over one miliion customer lines. it’s based near the Chicago
`{Tl-tare Airport.
`
`fiEN'FRAEE @FFWE: Telephone company facility where
`subscribers lines are joined to switching equipment for connecting
`other subscribers to each other, locally and long distance. Also called
`(36, as in See—Ooh.
`
`hfifl'fi'fifih @hfififi BAWERY: A group of wet cells joined in
`series to provide 48 volts DC. Central office batteries are typically
`charged off the main 126 volts AC. The batteries do two basic tune»
`tions: 1. Provide a constant source of DC power tor 8 hours or so
`after AC powers drops, and 2. isolate the central cities from gilt—
`ches on the AC line.
`
`@ENERAL PR®€E$$ENG QNEI: 0P3. The part of a computer
`which has the logic, computational and decision-making. it inter—
`prets and executes instructions as it receives them. Personal corn—
`puters have one CPU —— typically a single chip. it is the so-osiieo
`”computer on a chip.” That chip identities them as an 8-bit, won
`or 32—bit machine.
`
`Telephone systems are not that different, especieliy smelter
`ones. Typically they have one main CPU «- a chip. That chip con-
`trols the various functions in the telephone“ Today’s telephone’s
`systems are in restity nothing more than special purpose computers.
`As phone systems get bigger, the question of CPUs ~— centrai pro-
`cessing units —— becomes harder to figure, The design of phone
`systems has, of late, tended away from single processorncontroiieci
`telephone systems (as in single processor controlled PCs). There
`are several reasons for this move. First, it’s more economical for
`growth. Make modules or “little” switches and join iittie ones together
`to make big ones. Second, it’s more reliable. it’s obviously better
`not
`to rely on one big CPU. But
`to have several.
`in short,
`
`8‘?
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`“FELECQNNECT DECTEONARY
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`the issue of Central Processing Units ~ OPUS ~ is blurring. But
`the concept is still important. Because ~ by understanding how
`your telephone switch works (its architecture) ~ you wiii unders-
`tand its strengths and weaknesses.
`
`fiENTRfiMfiEQ fliflfiflfl'flfi Mfifififififi Afifififififlhfifi:
`CAMA. "the recording of toll calis at a centralized point.
`
`fififl’fi'fiEX: Centrex is a business teiephone service offered by a
`locai telephone company from a local central office. Centrex is
`basically single line teiephone service delivered to individual desks
`(the same as you get at your house) with important “bells and
`whisties,” to features, added. Those “belts and whistles” include
`features like intercom, cali forwarding, cali transfer, toll restrict, least
`cost routing and sail hoid (on single line phones).
`Think about your home phone. You can often get “Custom Gail»
`ing” features. These features are typicatly fourfold: Catt forwarding,
`Call Waiting, Call Conferencing and Speed Calling. Centrex is
`basically Custom Caiiing, but instead of tour ieatures,
`it has 19
`features, and more. Like Custom Caiiing, Centrex features are pro-
`vided by the iocal phone company’s central office. Centrex is teas-
`ed to businesses by the iocai phone company as a substitute for
`that business buying its telephone system ~ its own PBX or a key
`system.
`Before Divestiture, Centrex was presumed dead. AT&T was in-
`tent on becoming a major PBX and key system supplier. Then
`Divestiture came, and the operating phone companies recognized
`they were no longer part of AT&‘i’, no longer had factories to sup-
`port, but did have a huge number of Centrex instaliations, which
`were providing iarge monthly revenues. As a result the local
`operating companies have injected new life in Centrex, making the
`service more attractive in features, price, service and attitude. Here
`are the main reasons businesses go with Centrex as against going
`with a stand—atone telephone system:
`1.. Money. Centrex is typically cheaper to get into (the central
`office already exists). installation charges can he tow. Commitment
`can also he low, since most Centrex service is leased on a month-
`toamonth basis. So it’s perfect for companies planning an eariy move.
`There may be some economies of scale, aiso. Some phone com-
`panies are now offering tow cost, large size packages.
`2. Multipie iocations. Companies with multipie iocations in the
`same city are often cheaper with Centrex than with multiple private
`phone systems and tie tines, or with one private phone system and
`OPX lines.
`
`88
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`Apple v. PMC
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