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- _______________________________________________________________________________
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- _ _ _ _
- ((___)) ((___))
- [ x x ] cDc communications [ x x ]
- \ / presents... \ /
- (` ') (` ')
- (U) (U)
- Frankie's Yellow Pages ... Volume II
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Yet another file from the Cow's Information Series,
- the Yellow Pages are a testament to the fun-filled
- world created by those zany Bell technicians. Herein,
- the serious phreak will find a complete encyclopedia
- of Bell System terms, abbreviations, and acronyms...
-
- >> A CULT Publication by High Priest and Scribe, Franken Gibe <<
- -cDc- Cult of the Dead Cow Dissemination Council -cDc-
-
- _______________________________________________________________________________
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Cable Fill The percentage of pairs in a cable sheath actually
- ~~~~~~~~~~ assigned and used.
-
- Cable Vault An area, generally on the lower level of the telco,
- ~~~~~~~~~~~ where cables enter the building.
-
- Call Forwarding
- ~~~~~~~~~~~~~~~
- One of those amazing custom calling services. When call forwarding is
- activated by a customer, all calls to that line are automatically routed
- to another line designated during activation. [C.F. is ESS's answer to
- the diverter]
-
- Call Store
- ~~~~~~~~~~
- The equipment unit of an Electronic Switching System that provides temporary
- memory storage of information pertaining to call processing & maintenance.
-
- Call Waiting
- ~~~~~~~~~~~~
- The custom calling service adored by millions that provides a tone burst
- to a customer on an established call when a second call has been directed
- to that line. The notification tone is heard only by the called customer,
- whereas the incoming caller hears regular ringing. The customer can place
- the existing call on hold, connect to the calling party, and then repeat
- the procedure to reestablish the original connection. This operation can
- be done ad nauseum. [See File on the Call Waiting Tap...available to some]
-
- CAMA See Centralized Automatic Message Accounting
- ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- CAMA-ONI See CAMA- Operator Number Identification
- ~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Carried Load
- ~~~~~~~~~~~~
- (1) The load you tote around on the Big Date, and try to control [eew!]
-
- (2) The average number of calls that are in progress. The unit, one call,
- is called...shucks, y'know this...an Erlang.
-
- Carrier System
- ~~~~~~~~~~~~~~
- A system for transmitting one or more channels of information by processing
- and converting to a form suitable for the transmission medium used by the
- system [got that?]. Many information channels can be carried by one broad-
- band carrier system. Common types of carrier systems are frequency-division,
- in which each info. channel occupies an assigned portion of the frequency
- spectrum, and time-division, in which each info. channel uses the trans-
- mission medium for periodic assigned time intervals.
-
- Carterfone Decision
- ~~~~~~~~~~~~~~~~~~~
- The MONUMENTAL decision made by the FCC in 1968 to the effect that telco
- customers should be allowed to connect their own equipment (i.e.
- DATA MODEMS) to the public telenetwork provided that this interconnection
- not adversely affect the telco's operations or the utility of the tele-
- phone system to others. Prior to this wonderful decision, only telco
- provided equipment could be hooked up to the network. Let's take a
- few moments to thank the Modem Deity for Equal Access.
-
- CCH See Connections per Circuit Hour
- ~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- CCIS See [yawn] Common Channel Interoffice Signaling
- ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- CCITT See Intl. Telephone & Telegraph Consultative Committee
- ~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- CCS See Hundred Call Seconds
- ~~~ ~~~~~~~~~~~~~~~~~~~~~~~~
-
- CCSA See Common-Control Switching Arrangement
- ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- CDO See Community Dial Office
- ~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Central Office (CO)
- ~~~~~~~~~~~~~~~~~~~
- (1) An Overrated Bulletin Board System.
-
- (2) A switching system that connects lines to lines and lines to trunks. The
- term is more often used to refer to the telco building itself in which
- a switching system is located and to include other equipment (such as
- transmission system terminals) that may be located in such a building.
-
- Central Office Code
- ~~~~~~~~~~~~~~~~~~~
- A 3-digit identification number under which up to 10k station codes are
- subgrouped. Exchange area boundaries are associated with the CO code which
- accordingly has billing significance. Note that SEVERAL CO codes may be
- served by a single CO. Also called NNX code...the prefix...the exchange.
-
- Central Office Work Order
- ~~~~~~~~~~~~~~~~~~~~~~~~~
- An order for work to be done in the operating company to make or change
- equipment assignments for switching system line or trunk access.
-
- Centralized Automatic Message Accounting (CAMA)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- (Phantom Phreak's Phavorite...) A process using centrally located
- equipment, including a switchboard or a traffic service position,
- associated with a tandem or toll switching office, for automatically
- recording billing data for customer-dialed extra-charge calls originating
- from several local central offices. A tape record is processed at an
- electronic data processing center.
-
- Centralized Automatic Message Accounting- Operator Number Identification
- (CAMA-ONI) Operator
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- An operator located at a position that is connected temporarily on a
- customer-dialed station-to-station call. The operator secures the calling
- number from the customer and keys the number into the centralized
- automatic message accounting equipment.
-
- Centralized Intercept Bureau (CIB)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- That type of bureau that is part of an Automatic Intercept System and is
- associated with one or more automatic intercept centers. It provides
- facilities whereby operators situated at auxiliary service positions
- furnish assistance to calling customers whose calls have been intercepted
- and who require help beyond that furnished by the auto. intercept center.
-
- Centrex
- ~~~~~~~
- A service for customers with many stations that permits station-to-station
- dialing, one listed directory # for the customer, direct inward dialing
- to a particular station, and station identification on outgoing calls.
- The switching functions are performed in a central office.
-
- Channel
- ~~~~~~~
- A transmission path between two points. The term channel may refer to a
- one-way path or, when paths in the two directions of transmission are
- always associated, to a 2-way path. It is usually the smallest subdivision
- of a transmission system by means of which a single type of communication
- service is provided, i.e., a voice channel, teletypewriter, or data channel.
-
- Channel Bank
- ~~~~~~~~~~~~
- Channel terminal equipment used for combining (multiplexing) channels on a
- frequency-division or time-division basis. Voice channels are combined into
- 12- or 24-channel groups.
-
- Channel Busy Tone
- ~~~~~~~~~~~~~~~~~
- An audible signal indicating that a call cannot be completed because of
- trunk or switching system blocking. The tone is applied 120 times per
- minute. Also called fast busy or (the ever-popular reorder) tone.
-
- CIB See Centralized Intercept Bureau
- ~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Circuit
- ~~~~~~~
- (1) A communication path between two or more points.
-
- (2) A network of circuit elements, such as resistors, inductors, capacitors,
- semiconductors, etc., that performs a specific function.
-
- (3) A closed path through which current can flow.
-
- (4) A term no 'philter' would ever dream of asking.
-
- Circuit Order
- ~~~~~~~~~~~~~
- The document used to transmit engineering design of a public telephone
- network trunk or special-service circuit to the department that
- implements the design. (Good Social Engineering term...)
-
- CLASS See Custom Local Area Signaling Service
- ~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Class 5 Office
- ~~~~~~~~~~~~~~
- A local central office that serves as the network entry point for station
- loops and certain special-service lines. Also called an end office. Other
- offices, classes 1,2,3, and 4, are toll offices in the telenetwork.
-
- CO See Central Office
- ~~ ~~~~~~~~~~~~~~~~~~
-
- Code
- ~~~~
- (1) Any of a wide variety of schemes for representing info. such as a color
- color code for values resistors, Morse code for telegraphy, and a ZIP
- code for a mail address.
-
- (2) A system of rules for representing information by digital signals such
- as teletypewriter code. See ASCII (Vol. I).
-
- (3) A numbering system for telephone addresses. See Central Office Code,
- Station Code, and Number Plan Area.
-
- (4) A set of standard abbreviations for equipment and facility names. See
- Common Language Code.
-
- (5) A set of rules for representing the amplitude of a signal sample by
- digital signals. See Pulse Code Modulation.
-
- (6) The least impressive achievement or possession of the common phreak.
- See also Codezz, Kodezz, K0dezz, etc.
-
- Coded Ringing
- ~~~~~~~~~~~~~
- A form of semiselective ringing. The customer is required to identify his
- own code by the number of rings and/or their duration. A variation of
- coded ringing is one of the CLASS services.
-
- Coherent
- ~~~~~~~~
- (1) Something the CULT is not very often.
-
- (2) Refers to a fixed phase relationship that provides certain advantages
- in signal detection.
-
- Coherent Modulation System
- ~~~~~~~~~~~~~~~~~~~~~~~~~~
- (For the SERIOUS amongst you)...A modulation system that requires a carrier,
- either transmitted or locally derived and having the same frequency and
- phase as that associated with the received signal, for recovering the
- original modulating signal.
-
- Coherent Phase-Shift Keying (CPSK)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Modulation techniques for transmitting digital info. in which that info.
- is conveyed by selecting discrete phase changes of the carrier relative
- to a reference. See Coherent Modulation System or a physicist near you.
-
- Coin-First Service
- ~~~~~~~~~~~~~~~~~~
- Coin telephone service in which an initial rate deposit is required to
- obtain a dial tone. Coin-first service is being replaced by dial-tone-
- first, an improved service requiring additional functions in the station
- and in the switching system. (Thus the BIOC concept that areas with
- coin-first fortress phones are served by older switches.)
-
- Coin Relay
- ~~~~~~~~~~
- A relay in a coin telephone that collects or returns the coins under the
- control of the central office. This relay is activated by CO tones,
- and in areas that do not use out-of-band signaling, Red Box tones can
- mean free calls by activating this relay.
-
- Common Channel Interoffice Signaling (CCIS)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- This is as precise a definition as I could find. I remember on Phreak Klass
- 2600 (in 806), the arguments used to rage as to what CCIS is and how
- it negates or prevents boxing. Sigh. I'll go into all that here, since
- CCIS is one of the Top Five most-likely Philter Questions.
-
- CCIS is a signaling system, developed for use between stored program
- switching systems (i.e., ESS et alia), in which all of the signaling info.
- for a group of trunks (i.e., operator or 'blue box' MF tones, Green and
- Red tones) is transmitted over a dedicated high-speed data link, rather
- than on a per-trunk basis (i.e. inband signaling, whereby tones
- were actually 'shuttled' on your voice trunk). CCIS can reduce call setup
- time and save money (yeah!) compared with individual trunk signaling.
-
- That is the definition. Now, you may wonder what the difference
- is between out-of-band signaling and CCIS. Alright, though some will
- say that they're the same, that's not quite so. CCIS is out-of-band, but
- out-of-band is not always CCIS. Got that? That is to say, out-of-band
- is the generic label of signaling that occurs outside the voiceband.
- This method usually places signaling at frequencies beyond the voice
- frequencies, but not necessarily on a dedicated-trunk (CCIS). Thus,
- per-trunk signaling COULD be out-of-band. CCIS, on the other hand,
- devotes a separate trunk to signaling data. Thus, all such signaling
- is carried over a trunk separate from the voice trunk. This is out-of-
- band in a sense, then. The following is a letter I wrote to 2600 Mag. and
- their response. It's not too explicit, but it may help clarify a touch.
-
- Dear 2600:
- In the course of two years of telecom, I've read countless Gfiles
- which describe the (virtual) spectrum of 'boxes'. Yet few files give
- a clear explanation as to why boxing is impossible in many electronic
- switching offices. Would you mind explaining CCIS, and just how this
- 'prevents' boxing? Thanks.
-
- Reply: "Put quite simply, it's impossible to blue box in an electronic
- switching office under CCIS because the equivalent of the blue box tones
- that a phreak would send are transmitted over a completely different line.
- Since you don't have access to these lines, blue boxing no longer works.
- This is ALSO called out-of-band signaling."
-
- Common Control
- ~~~~~~~~~~~~~~
- An automatic arrangement in which items of control equipment in a switching
- system are shared; they are associated with a given call only during the
- periods required to accomplish the control functions. All Bell System
- Crossbar and ESS systems have common control. This is in contrast to the
- individual relays of Strowger switching.
-
- Common-Control Switching Arrangement (CCSA)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- An arrangement in which switching for a private network is provided by one
- or more common-control switching systems. The switching systems may be
- shared by several private networks and also may be shared with the public
- telephone network.
-
- Common Language Code
- ~~~~~~~~~~~~~~~~~~~~
- Codes used to ensure uniform abbreviation of equipment and facility names,
- places, place names, etc. (Be nice to get ahold of a summary...anyone?)
-
- Communications Satellite Corporation (COMSAT)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Created by authorization of Congress in the Communications Satellite Act
- of 1962. This private corporation (NOT any agency of the U.S. Government,
- though subject to governmental regulation) was created primarily to
- provide for the establishment, operation, and management of a commercial
- communications satellite system. COMSAT presently acts as manager for
- INTELSAT and also represents the U.S. in INTELSAT.
-
- Community Dial Office (CDO)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~
- A small automatic switching system that serves a separate exchange area
- having its own numbering plan and ordinarily having no operating or
- maintenance force located in its own building; operation is handled and
- maintenance is directed from a conveniently located and beautifully
- landscaped point referred to as an operator office.
-
- Compandor
- ~~~~~~~~~
- An abbreviation for compressor-expandor. A device used to compress the
- range of talker volumes at the input to a carrier system (in particular,
- to increase low-level talker volumes) and to expand the received volumes
- at the output of the carrier system (to provide complementary function
- and to make the transmission system transparent). This technique improves
- the signal-to-noise ratio for low-level talkers and provides a
- substancially reduced received noise level during the so-called quiet
- intervals. A miracle, really.
-
- Compandor Mistracking
- ~~~~~~~~~~~~~~~~~~~~~
- If this shows up on a philter, leave me mail. Mistracking refers to the
- failure of the expandor-characteristic of a compandor to complement
- exactly the compressor-characteristics, thereby causing signal distortion.
-
- COMSAT See Communications Satellite Corporation
- ~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Concentration
- ~~~~~~~~~~~~~
- (1) Applies to a switching network (or portion thereof) that has more
- inputs than outputs.
-
- (2) In a traffic network, combining calls arriving on many lines or trunks
- to transmit them more efficiently in a trunk group.
-
- (3) Locating as much equipment as possible at a given place to achieve
- economies in such things as building costs, maintenance, etc.
-
- (4) Something VERY difficult to maintain when reading tech. manuals.
-
-
- Connecting Arrangement
- ~~~~~~~~~~~~~~~~~~~~~~
- The implementation for connecting arrangement service. A connecting
- arrangement consists of an interconnecting unit, a Technical Reference,
- and a tariff offering.
-
- Connecting Arrangement Service
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- A service providing electrical connection to the public telenetwork of
- customer-provided equipment. This service, whish is usually denoted by a
- uniform service order code (USOC), is offered by tariff and is implemented
- with an interconnecting unit and a Technical Reference. (Great SE term!)
-
- Connection
- ~~~~~~~~~~
- (1) A point where a junction of two or more conductors is made.
-
- (2) Generally, a telfo connection is a 2-way voiceband circuit completed
- between two points by means of one or more switching systems. It
- contains two loops and may contain one or more trunks.
-
- Connections per Circuit Hour (CCH)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- An indication of holding time of calls. Under normal circumstances, ACH=
- CCH which is about equal to 6 in busy hour for trunk groups excluding
- high-usage groups.
-
- Connector
- ~~~~~~~~~
- In Step-by-Step switching systems, a 2-motion electromechanical switch that
- operates on the last two digits of the telephone number to connect from a
- selector to any one of 100 customer loops. The connector performs the
- following functions:
- o Tests for busy
- o If busy, returns busy tone
- o If idle, rings the called party and returns ringback tone to calling line
- o Provides a supervisory signal indicating that answer has occurred and
- trips ringing
- o Provides talking battery to the calling line on intraoffice calls and
- to the called line
- o Disconnects when the customer hangs up
-
- Construction Program
- ~~~~~~~~~~~~~~~~~~~~
- A detailed plan of placement, removal, and rearrangement of facilities to
- modernize and expand the capacity of the facilities network.
-
- Conversion (Converting)
- ~~~~~~~~~~~~~~~~~~~~~~~
- In signaling, the substitution of one, two, or three digits for received
- digits for the purpose of directing the call through the next office.
-
- Coordinate Network
- ~~~~~~~~~~~~~~~~~~
- A switching network consisting of incoming and outgoing talking paths
- arranged at right angles to each other with fine-motion or electronic
- switching elements at intersections.
-
- CORNET Network
- ~~~~~~~~~~~~~~
- A private telephone network serving Western Electric and Bell Laboratories;
- CORNET is a contraction of corporate network. This network uses common-
- control switching arrangements (CCSA).
-
- Country Code
- ~~~~~~~~~~~~
- The 1-, 2-, or 3-digit number that, in the world numbering plan, identifies
- each country or integrated numbering plan in the world. The initial digit
- is always the world-zone number. Any subsequent digits in the code further
- define the designated geographic area (normally identifying a specific
- country). On an international call, the country code is dialed before
- the national number.
-
- Coupler
- ~~~~~~~
- An alternate name for an interconnecting unit.
-
- CPSK See Coherent Phase-Shift Keying
- ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Crossbar Switch
- ~~~~~~~~~~~~~~~
- The basic element of any Crossbar System. A crossbar switch is a relay
- mechanism consisting of 10 horizontal paths and 10 or 20 vertical paths.
- Any horizontal path can be connected to any vertical path by means
- of magnets. A 2-stage operation is used to close any crosspoint. First, a
- selecting magnet shifts all selecting fingers in a horizontal row, then a
- holding magnet shifts a vertical actuating card to close the selected
- contacts.
-
- Crosspoint Array
- ~~~~~~~~~~~~~~~~
- An arrangement of switching elements used in some switching networks,
- characterized by incoming and outgoing talking paths arranged at right
- angles to each other, with switching elements at intersections.
-
- Crosstalk
- ~~~~~~~~~
- Undesired power coupled into a communications circuit from other communi-
- cations circuits. Telephone crosstalk may be either intelligible (& thus
- VERY amusing) or unintelligible (& thus VERY annoying).
-
- CTRAP See Customer Trouble Report Analysis Plan
- ~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- Custom Calling Services
- ~~~~~~~~~~~~~~~~~~~~~~~
- A group of four keen services provided by ESS to business and residence
- customers: 3-way calling, speed calling, call waiting, and call forwarding.
-
-
- Custom Local Area Signaling Service (CLASS)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- The ultimate calling service. CLASS is one of the Bell Network's futuristic
- services meant to prop-up profits and presumably make the customers' lives
- a little better. This service includes such features as call-blocking
- and filtering, coded/priority ringing, and customer-accessible ANI on
- incoming callings. CLASS is but one facet of the ultimate telco network,
- ISDN (Integrated Services Digital Network).
-
- Customer-Premises Equipment
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Equipment normally installed on the customer's premises, such as telephone
- sets, key telephones, PBX's, etc.
-
- Customer Trouble Report Analysis Plan (CTRAP)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- A plan that provides manual and mechanized procedures for recording troubles
- reported by customers and analyzing the reports to obtain statistical data
- regarding customer service.
-
- _______________________________________________________________________________
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- That's about it for Volume II. The C's are indeed myriad and multitudinous.
- After you've digested yet another chunck of Telco Tech Info., look for Volume
- III of the Yellow Pages, coming soon to BBS's everywhere...sorta.
- _______________________________________________________________________________
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- (c)1987 cDc communications by Franken Gibe 12/0/87-28
- All Rights Worth Not Very Much At All
-
-