The Hacker's Encyclopedia 1998

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==Phrack Magazine== Volume Four, Issue Forty-Three, File 21 of 27 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + + + + + The Telephony Acronyms and Abbreviations List from Hell + + + + + + by + + Crisp GRASP + + + +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Well, here it is, the list from hell. Sure beats the old lists of 100 or so three letter acronyms. The whole reason for this list is so that you can crack almost ANY bell document. This list came from a few lists (one in Phrack a while back) and a few other Telephony lists here and there. Though it must be noted (and i want to take credit for it) that well over half of the acronyms and abbreviations were typed in by me, inputed into my database (of course I am not about to give out my database). It is always a good idea to start a database, one will learn a lot faster. It is doing things scientific like, and for someone as compulsive as I, solving the puzzle of the telephone company was easy as pie. I must say that all the hackers I have meet, and talked to are all compulsive as hell <G>. I think it is just what it comes down to, who is willing to learn. Any ways here is two fields in my database, one small part, but worth it. Though i do not think it will be able to help most of you out, just gets into too much, and understanding which acronym goes where, and understanding what goes where is hard. Well good luck! Greets to Bell Northern Labs, never see too much from you press wise! and to SRI, should have come to Cal. hah (Don knows what I am talking about, his funding is short) -------------------------------------------------------------------------- 15M Fifteen minutes 15S Fifteen seconds 1CF Singal party coing first pay phone 1FAC Interface packs 1FB One party flat business rate 1OF One party official (telco) business line 2SPDT Partial dial timeout in the second stage of a traditional 2-stage international 2SPST Permanent signal timeout in the second stage of a traditional 2-stage international 2SVCA Vacant code in the second stage of a traditional 2-stage international outbound 2W Two wire (pair) (circuit) 2WAY Two-way trunk groups 300 Log command menu (SARTS command) 376 Log clear (SARTS command) 384 Write log (SARTS command) 385 Read log (SARTS command) 399 Log print (SARTS command) 3KHZ Three kilohertz 3RNGR Three ringer 3WO Third wire open 4W Four wire (pair) (circuit) 600 Test menu (SARTS command) 600B 600-ohm briged connection 611 Detail tests (SARTS command) 621 Macro command menu (SARTS command) 631 Automatic test command (SARTS command) 735T 735-ohm compromise termination ?A Action field contains an error ?D Data field contains an error ?E Error exist in the message but can ot be resolved to the proper field ?I Identification field contains an error ?T Time-out has occured on channel ?W Warning message A A side (lead) (pair) A Area A Telephone number or trunk group and member number from trouble A/B Two wire phone connection (T&R) AA Automatic answer AA Packet analog access line INTER/TRA blocal 1-26 AABS Automatic alternate billing service AAE Auxiliary access equipment AAR Automatic alternate routing AAX Automated attendant exchange AB Packet switch trunk INTER/TRA blocal 1-26 ABATS Automatic bit access test system ABATS Automatic bit access test system (DDS service) ABC Automatic bill calling (TSPS) ABF Abandon failure ABF Abandon failure (MDII) ABHC Average busy hour calls ABL Auxiliary Buffer oder word Left half ABM Asynchronous balanced mode ( -> SABME) ABME ABM extended ABR Auxiliary Buffer order word Right half ABS Alternate billing service ABS Alternative billing service ABSBH Average busy season busy hour ABT Abort ABV Above AC Administrative computer AC Alternating current AC Assembly code ACA Asynchronous communication adapter ACB Annoyance call bureau ACB Automatic call-back ACC Audio communications controller ACCS Automated calling card service ACD Automatic call distribution ACD Automatic call distributor ACDA Automatic call disposition analyzer ACDN Access Directory Number ACDN Access directory number ACE Assignment change establish ACE Automatic calling equipment ACES Aris cabs entry system ACF Advanced communications functions ACFA Advanced CMOS frame aligner peb2030 ACG Automatic call gap ACH Attempt per circuit per hour ACI Answer controller interface (IOM2 monitor command) ACIA Asynchronous communications interface adapter ACK Acknowledge ACK No acknowledgement wink ACK No acknowledgement wink (MDII) ACKDB Acknowledgement database ACM Address complete msg. (SS7: in ISUP) ACOF Attendant control of facilities ACP Action point ACSE Association control service element ACSNET Acedemic computing services network ACSR Automatic customer station rearrangement ACSU Advanced T-1 channel service unit ACT AC Testing definition ACT AC testing definition ACT Activate ACT Active ACT Auto or automatic circuit transactions ACTS Automated coin toll service ACTV Acticated ACTVD Activated ACU Alarm control unit ACU Automatic calling unit AD Attendant INTER/TRA blocal 1-26 ADAP Audix data acquisition package ADAS Advanced directory assistance system ADC American digital cellular ADC Analog to digital converter ADCCP Advanced data communication controll procedure ADCCP Advanced data communications control procedure ADCI Automatic display call indicator ADD EXP Address expander ADDL Additional ADDR Address translations ADJ Ajust ADM Add-drop multiplex ADMA Advanced DMA controller SAB82258 ADN Abbreviated dialing number ADP Automatic diagnostic process. ADPCM Adaptive PCM ADS Administration of designed services ADS Administration of designed services review ADS Advanced digital system ADS Audio distribution system ADS Auxilary data system ADSL Asymmetrical digital subscriber line ADTS Automated digital terminal system ADTS Automatic data test system ADTS Automatic digital terminal system ADU Automatic dialing unit AERM Alignment error rate monitor AF Commercial audio fulltime INTER/TRA blocal 1-26 AFACTS Automatic facilities test system AFADS Automatic force adjustment data system AFE Analog front end AFI Authority and format identifier (ISO 7498) AFSC Advanced features service center AFSK Automatic frequency shift keying AG/EEE Above ground electronic equipment enclosures AGC Automatic gain control AGM Normal aging months AGND Analog ground AGT Accelerated aging type AI Activate indication (C/I channel code) AI Artificial intelligence AI Assigner's initials AI Automatic identified outward dialing INTER/TRA blocal 1-26 AIC Automatic intercept center AICC Automatic intercept communications controller AIN Advanced intelligent network AIOD Automatic id of outward dialing AIOD Automatic identifaction of outward dialing AIS Alarm indication signal AIS Alarm indication signals AIS Automatic intercept system AIT Analit initialization of tables AIU AI upstream AL Alternate services INTER/TRA blocal 1-26 ALATS Automatic loop access system system (DDS service) ALBO Automatic line buildout ALE Address latch enable ALE Automatic line evaluation ALFE Analog line front end ALGOL Algorhythmic computer language ALI Automatic location indentification ALIT Automatic line insulation testing ALL All events ALL All module controller maintenance interrupts ALL Turns on all IDs ALPT Alarm scan points ALRM Alarms ALRU Automatic line record update ALS Automated list service AM Administrative module AM Amplitude modulation AM Asynchronous multiplexer AM Packet AMA Automatic Message Accounting AMA Automatic message accounting AMACS AMA collection system AMAIRR Automatic message accounting irregularity AMALOST Lost automatic message accounting AMARC AMA recent change AMARC AMA recording center AMASE AMA standard entry AMAT Automatic message accounting transmitter AMATPS Automatic message accounting teleprocessing system AMATPS Automatic message accounting transmitter teleprocessing system AMC Add-on module connector (-> sipb) AMERITECH American information technologies AMI Alternate mark inversion code AML Automatic maintenance limit. AMP Advance measurement processor AMP Amplifier AMPS Advanced mobile phone service AMR Automatic meter reading AMWI Active message waiting indicator AN Announcement service INTER/TRA blocal 1-26 AN Associated number ANA Automatic number announcement ANC All number calling ANCT Analysis control table ANI Automatic number identification ANIF Automatic number identification failure ANM Answer msg. (SS7: in ISUP) ANS Answer ANS Answer On Bus ANS Answer msg. ANSER AT&T Network Servicing System (i.e. via EADAS link ) ANSI American national standards institute AO Allocation order AO International/overseas audio (full time) INTER/TRA blocal 1-26 AOC Advice of charge (i.256 B) AOSS Auxilliary operator service system AP Access point AP Application (OSI layer 7) AP Application processor AP Attached processor AP Auciliary processor AP Automatic position AP Commercial audio (part time) INTER/TRA blocal 1-26 AP-PG Access point page APC Alarm processor circuit APC Amarc protocol converter APD Access point data APD Avalanche photo diode APDB Access point data base APDL Application processor data link APH Application protocol handler API Application interface APM Application processor modules APPC Advanced program to program communication (IBM) APPL1-APPL5 Reserved for application handlers APS Automatic position system APS Automatic protection switch APS Automatic protection switching system AQ Autoquote problem. AR Activation request (C/I channel code) AR Alarm report AR01 Office alarm - 1AESS alarm message - AR02 Alarm retired or transferred - 1AESS alarm message - AR03 Fuse blown - 1AESS alarm message - AR04 Unknown alarm scan point activated - 1AESS alarm message - AR05 Commercial power failure - 1AESS alarm message - AR06 Switchroom alarm via alarm grid - 1AESS alarm message - AR07 Power plant alarm - 1AESS alarm message - AR08 Alarm circuit battery loss - 1AESS alarm message - AR09 AMA bus fuse blown - 1AESS alarm message - AR10 Alarm configuration has been changed (retired inhibited) - 1AESS AR11 Power converter trouble - 1AESS alarm message - AR13 Carrier group alarm - 1AESS alarm message - AR15 Hourly report on building and power alarms - 1AESS alarm message ARA Automatic reservation adjustment ARC Administrative responsibility code ARC Alternate route cancellation ARC Alternate route cancellation control ARC Audio response controller ARCOFI Audio ringing codec filter ARCOFI-SP ARCOFI + speakerphone function ARCOS ARCOFI coefficient support program ARCOTI SIPB telephone module ARD AR downstream ARG Alarm reference guide ARG Assemble and run a given master file ARIS Audichron recorded information system ARL Activation request local loop (C/I channel code) ARM Activation request maintenance (C/I channel code) ARM Asynchronous response mode ARM Automatic R(emote test system) maintance ARMAR Automatic request for manual assistance resolution ARN Activation request ARQ Automatic repeat request ARR Automatic ring recovery. ARS Alternate route selection ARS Automatic route selection ARSB Automated repair service bureau ARSB Automatic repair service bureau ARSSI Automatic rought selection screening index ART Audible ringing tone ARU Activation request upstream ARU Audio response unit ASAP As soon as possible ASC Alarm and status circuit ASC Alarm and status circuit . ASC Alarm surveillance and control ASCC2 Advanced serial communication controller ASCII American standard code for information interchange ASCII American standard code for information interexchange ASD Automated SMAS diagnostics ASDPE Synchronous data link controller (SDLC) A reset ASE Application service element ASEC Assignment section ASGN Assign ASGNMTS Assignments ASIC Application specific integrated circuit ASM Analog subscriber module ASOC Administrative service oversight center ASP Advanced service platform ASP Arcofi signal processor ASPACGCOMP ASP SCP response message with an ACG component received at the switch ASPBADRESP ASP SCP response message received with invalid data ASPEN Automatic system for performance evaluation of the network ASPNORTEMSG ASP reject message ret err and a play announc recei at the switch from the SCP ASPSNCOMP ASP SCP response message with a send notifi component received at the switch ASPTNMSG ASP termination notification message sent from the switch to the SCP ASR Access service request ASSN Assignment AST Position acknowledge seizure signal time-out (MDII) ASYNC Asynchronous AT Access tandem AT International/overseas audio (part time) INTER/TRA blocal 1-26 AT&T American telephone and telegraph AT-1 Auto test-1 AT-2 Auto test-2 AT01 Results of trunk test - 1AESS automatic trunk test ATA Automatic trunk analysis ATAB Area trunk assignment bureau ATAI Automatic troubler analysis interface ATB All Trunks Busy ATB All trunks busy ATC Automated testing control ATC Automatic transmission control ATD Accept date ATD Async. TDM ATH Abbreviated trouble history ATI Automatic test inhibit ATI Awake TI ATICS Automated toll integrity checking system ATIS Automatic transmitter identification system ATM Analog trunk module ATM Asynchronous transfer mode ATM Automatic teller machine ATMS Automated trunk measurement system ATN Assigner's telephone number ATO Time-out waiting for address complete signal ATP All tests pass ATR Alternate trunk routing ATRS Automated trouble reporting system ATTC Automatic transmission test and control circuit ATTCOM AT&T communications ATTG Attendant group ATTIS AT&T information system AU Access unit AU Autoscript INTER/TRA blocal 1-26 AU Auxiliary AUD Assignment list audit AUD Audits AUDIT Audit detected problem. AUDIX Audio information exchange AUP Access unit port AUTO Automaitc AUTODIN Automatic digital network AUTOSEVCOM Automatic secure voice communications AUTOVON Automatic voice network AUXF Auxillary frame AVD Alternate voice data AVD Alternate voice-data AWI Awake indication AZD All zeros data B B side (pair) (lead) B Bridged connection B Equipment number B6ZS Bipolar with 6 zero subsitution B8ZS Bipolar eight zero suppression encoding (DS-1) B8ZS Bipolar with 8 zeros substitution (T1 pri) B911 Basic 911 BA Basic access BA Protective alarm (CD) INTER/TRA blocal 1-26 BAF Blocking acknowledgment failure BAI Bridge lifter assignment inquiry BAL Balance BAMAF Bellcore AMA format BANCS Bell administrative network communications system BANKS Bell adminastration network systems BAPCO Bellsouth advertising & publishing company BAS Basic activity subset BAT Battery (-48v) BAx Business address x (x = number of line) BB Blue box BBD0/1 Binary 0s or 1s detected in b and d channels BCC Bellcore client companies BCC Block check character BCC Blocked call cleared BCCP Bearer ccp BCD Binary coded decimal BCD Blocked call delayed BCFE Busy call forwarding extened BCID Business customer identifier BCLID Bulk calling line identification BCMS Basic call management system BCS Batch change supplement (NTI) (DMS-100) BDCA Unk BDCS Broadband digital cross-connect system BDS Basic data service BDT Billing data transmitter BEF Band elimination filter BEL Bell BELLCORE Bell communications research BER Bit error rate BERT Bit error rate test BETRS Basic exchange telecommunications radio service BG Battery and ground signaling BG/EEE Below ground electronic equipment enclosures BHC Busy hour call BHC Busy hour calls BIB Backward indicator bit (SS7) BICU Bus interface control unit BIFIFO Bidirectional fifo BIR Bit receiver BIR Bus interface register BISDN Broadband ISDN BISP Business information system program BISYNC Binary synchronous communications BIT Bit BIT Bit transmitter BITNET Because-it's-time network BITR Bit transceiver BIX Building internal cross-connects BK Back BKUP Backup BKUP Requests a backup BL Bell & lights INTER/TRA blocal 1-26 BL Bridge lifter BL Bridge lifters - COSMOS command BL/DS Busy line/don't answer BLA Blocking acknowledgement (SS7: in ISUP) BLF Busy line field BLFCA Blocking a fully coded addressed international outbound call routed to a non-common channel signaling trunk BLK Block BLKD Blocked BLO Blocking (SS7: in ISUP) BLS Bridge lifter status BLS Business listing service BLV Busy line verification BMC Billing media coverage BMD Batch mode display BMI Batch mode input - TIMEREL and DEMAND BMOSS Building maintance operations service system BMR Batch mode release BMU Basic measurement unit (dip) BND Band number BNS Billed number screening BNSDBOV BVA BNS message received indicating data base overload BNSDBUN BVA BNS message returned because data base unable to process BNSGMSG BVA BNS message received garbled BNSNBLK BVA BNS message returned because of network blockage BNSNCON BVA BNS message returned because of network congestion BNSNRTE BVA BNS message returned because of no routing data BNSTOUT BVA BNS message returned because of timeout BNSUNEQ BVA BNS message returned because of unequipped destination BNSURPY BVA BNS message received with an unexpected reply BNx Business name x (x = number of line) BOC Bell operating companies BOC Bell operating company BOCC Building operations control center BOP Byte oriented protocol BOR Basic output report BORSCHT Battery BOS Bit oriented signaling BOS Business office supervisor BOSS Billing and order support system BOSS Business office service system (NYNEX) BOT Beginning of tape BOT Bottom BPI Bits per inch BPOC Bell point of contact BPS Bits per second BPSK Binary psk BPSS Basic packet-switching service BPUMP Backup pump BR Bit robbing (CAS-BR) BRAT Business residence account tracking system BRCF Business and residential customer service feature BRCS Business and residential customer services BRCS Business residence custom service BRDCST Broadcase BRDG Bridge BRDGD Bridged BREVC Brevity control BRG Baud rate generator BRI Basic rate interface BRITE Basic rate interface transmission extension (5ESS) BRK Break BRM Basic remote module BRM Bell communications research practice BRST Bridge signature table BS Backspace BS Banded signaling BS Bias battery (-19.1v) BS Siren control INTER/TRA blocal 1-26 BSA Basic serving arrangements BSBH Busy season busy hour BSC Business service center BSC/RSC Business/residence service center BSCM Bisynchronous communications module BSDPE SDLC B reset BSE Basic service elements BSF Bell shock force BSI British standards institution BSN Backward sequence number (SS7) BSOC Bell systems operating company BSP Bell system practice BSRF Basic standard reference frequency BSRFS Bell system reference frequency standard BST Basic services terminal BSTJ Bell system technical journal BT British telecom BTAM Basic telecommunications access message BTH Both BTL Bell telephone laboratories BTN Billing telephone number BTSR Bootstrapper board BTU British thermal unit BUFF System buffers (NTI) BVA Billing validation application BVAPP Billing verification and authorization for payment process BVC Billing validation center BVS Basic voice service BWM Broadcast warning message BWT Broadcast warning twx BWTS Bandwidth test set BYF Display the bypass file BYP Change the contents of the bypass file C Counting rate C Current supervision C Scan point (SP) C&A Centrifugal and absorption C-ACD Commercial-automatic call distributor (OSPS) C-NCH C-notch C/I Command/indicate C/S UNIT Combiner and splitter C1 Circuit system CA Cable CA Cable number CA Collision avoidance CA SSN access INTER/TRA blocal 1-26 CABS Carrier access billing system CAC Calling-card authorization center CAC Carrier access code CAC Circuit administration center CAC Customer administration center CACHE Cache errors CAD Computer-aided dispatch CAD Critical alarm display CADN Circuit administration. CADV Combined alternate data/voice CAF Circuit reset acknowledgment failure CAFD Comptrollers' automatic message accounting format description CAFD Controllers automatic message accounting format description CAI Address incomplete received CAI Call assembly index CAIS Colocated automatic intercept system CALRS Centralized automatic loop reporting system CAM Communication access method CAM Computer aided manufacturing CAM Content adressable memory CAM Control administration module CAMA Central automatic message accounting. CAMA Centralized auto message accounting CAMA Centralized automatic message accounting CAN Cancel CANC Cancel (i.451) CANF Clear the cancel from CANT Clear the cancel to CAP Capacitance CARL Computerized administrative route layout CAROT Centralized automatic reporting on trunks CAROT Centralized automatic reporting on trunks. CAS Cannel associated signaling CAS Circuit associated signaling CAS Computerized autodial system CAS Craft access system (SARTS) CAS Customer account service CAS7ABM CAS common channel signaling 7 (CCS7) abort message received CAS7ACG CAS CCS7 ACG invoke component received CAS7GMG CAS CCS7 received with invalid format reply CAS7GWE CAS CCS7 error CAS7NCG CAS CCS7 message returned because of network congestion CAS7NFL CAS CCS7 message returned because of network failure CAS7RCR CAS CCS7 reject component received CAS7SCG CAS CCS7 message returned because of subsystem congestion CAS7SFL CAS CCS7 message returned because of subsystem failure CAS7TAN CAS CCS7 message returned CAS7TOT CAS CCS7 query which timed out before reply received CASDBOV CAS message received indicating data base overload CASDBOV Customer account services (CAS) message received indicating data base overload CASDBOV Customer account services (CAS) message received indicating database overload CASDBUN CAS message returned CASGMSG CAS message received garbled CASNBLK CAS message returned because of network blockage CASNCON CAS message returned because of network congestion CASNRTE CAS message returned because of no routing data CASTOUT CAS message returned because of timeout CASUNEQ CAS message returned because of unequipped destination CASURPY CAS message received with an unexpected reply CAT Centrex access treatment CAT Craft access terminal CATLAS Centralized automatic trouble locating and analysis system CAY Create an assembly CB OCC audio facilitys INTER/TRA blocal 1-26 CBA Change back acknowledgement (SS7: in mtp) CBD Change back declaration (SS7: in mtp) CBEMA Computer and business equipment manufacturers' assc. CBERR Correctable bit error CBS Crossbar switching CBX Computerized branch exchange CC Call count CC Central control CC Central controller CC Common channel (CAS-CC) CC Common control CC Connection confirm CC Country code CC Country code (ISO 7498) CC Initials of person closing report out to catlas. CC OCC digital facility-medium speed INTER/TRA blocal 1-26 CC1 Call control 1 (IOS) CCA Change customer attributes CCA Computer content architecture (ISO 8637/2) CCBS Completion of call to busy subscribers (i.253 c) CCC Centeral control complex CCC Central control complex CCC Clear channel capability CCC Computer control center CCD Change due date - COSMOS command CCDDBOV BVA calling card (CCRD) message received indicating data base overload CCDDBUN BVA CCRD message returned because data base unable to process CCDGMSG BVA CCRD message received garbled CCDNBLK BVA CCRD message returned because of network blockage CCDNCON BVA CCRD message returned because of network congestion CCDNRTE BVA CCRD message returned because of no routing data CCDR Calling card CCDTOUT BVA CCRD message returned because of timeout CCDUNEQ BVA CCRD message returned because of unequipped destination CCDURPY BVA CCRD message received with an unexpected reply CCF Custom calling features CCH Connections per circuit per hour CCIR Comite' consultatif international des radio communications CCIR Consultative committee for radiocomunication (international radio CCIS Common channel interoffice signaling CCITT Comite' consultatif international telegraphique et telephonique CCITT Consultative committee for internat. telephone and telegraph CCM Customer control management CCNC CCS network control CCNC Common channel network controller CCNC Computer/communications network center CCOA Cabinet control and office alarm CCP Call control part CCR Clock configuration register CCR Continuity check request (SS7: in ISUP) CCR Customer-controlled reconfiguration CCRC Corrupt crc (IOM2 monitor command) CCRD Calling card (5E) CCRS Centrex customers ... system CCS Centum Call Seconds CCS Cluster support system CCS Common channel signaling CCS Custom calling services (NTI) CCS Hundred (C) call seconds CCS Hundred call seconds CCSA Common control switching arrangement CCT Central control terminal CCT Initialize and update the contractor-transducer file CCTAC Computer communications trouble analysis center CCU Colt computer unit CCU Combined channel units CCU Communication control unit CCV Calling card validation CD Call deflection (i.252 e) CD Collision detection (->csma/) CDA Call data accumulator CDA Change distribution attributes CDA Coin detection and announcement CDACS Concentrating DACS CDAR Customer dialed account recording CDC Central distrubtion center CDCF Cumulative discounted cash flow CDD Change due date CDF Combined distributing frame CDF DTF coin CDFI Communication link digital facilities interface CDI Circle digit identification CDI Connected line identification (i.251 C/E) CDI Control and data interface. CDI Control data interface CDIG Circle digit translation (NTI) CDM Coax data module CDMA Code division ma CDO Community dial office CDPR Customer dial pulse receiver CDQ1 Custom calling services discount quote CDR Call detail record CDR Call dial rerouting CDR Collision detect input line CDR Cut thru dip report CDRR Call detail recording and reporting CDS Circuit design system CDS Codes CDS Craft dispatch system CE Collision elimination (->CSMA/) CE Common equipment data (NTI) CE Conducted emission (EME) CE SSN station line INTER/TRA blocal 1-26 CEF Cable entrance facility CEI Comparable efficient interconnection CEI Comparably efficient interconnection CEN European committee of standards CENELEC European committee of standards (electrotechnics) CEP Connection endpoint CEPT European conference of post/telecom administrations CES CC error summary CEU CCS estimated usage CEV Control environmental vault CEV Controlled environment vault CF Coin first CF OCC special facility INTER/TRA blocal 1-26 CFA Carrir failure alarms CFA Change facility attributes CFC Cost function code CFCA Communications fraud control association CFD Coinless ANI7 charge-a-call CFGN Configuration CFI Configurable interface (SIPB) CFINIT Custom calling feature table CFN Call forward number CFND Call forward number don't answer CFNR Call forwarding no reply (i.252 c) CFP Call forwarding busy (i.252 b) CFP Print the class of service/features for an electromechanical enti CFR Code of federal regulations CFT Craft CFU Call forwarding unconditional (i.252 d) CFU Change facility usage CG Control group number CG OCC telegraph facility INTER/TRA blocal 1-26 CG01 Carrier group in alarm - 1AESS carrier group CG03 Reason for above - 1AESS carrier group CGA Carrier group alarm CGA Carrier group assignment CGAP Call gapping CGAP Call gapping code controls messages. CGB Circuit group blocking (SS7: in ISUP) CGBA CGB acknowledgement CGM Computer graphics metafile (ISO DIS 8632) CGN Concentrator group number CGNC Connector group network controller CGU Circuit group unblocking (SS7: in ISUP) CGUA CGU acknowledgement CH Change CH OCC digital facility high-speed INTER/TRA blocal 1-26 CHAN Channel CHAPS UNK - a known AT&T System - def. unknown CHAR Character CHG LASG Change loop assignment CHK Check CHR Chronical CI Concentrator identifier trunk INTER/TRA blocal 1-26 CI0IN Control interface 0 interrupt CI1IN Control interface 1 interrupt CIB Centralized intercept bureau CIC Carrier identification codes CIC Circuit identification code CIC Customer Information Center (AT&T) CICS Customer information control system CID Connection identification CIE Company establish company initiated change CIF Common intermediate format (for ISDN high end video) CIH Craft interface handler CII Call identity index CII Initial address message (IAM) irregularity (incoming) CIMAP Circuit installation and maintance assistance program CIMAP/CC Circuit installation and maintenance assistance/control center CIP Control interface port CIRR C/I receive register CIS Crimeline information systems CIS Customized intercept service CIXR C/I transmit register CJ OCC control facility INTER/TRA blocal 1-26 CK Checkbits CK OCC overseas connecting facility wide-band INTER/TRA blocal 1-26 CKF Continuity check failure (incoming) CKID Circuit identification CKL Circuit location CKS Clock select bit CKT Circuit CKT Circuit. CKTRY Cuicuitry CL Centrex CO line INTER/TRA blocal 1-26 CLASS Centralized local area selective signaling CLASS Custom local area signaling service CLC Common language code for an entity CLCI Common language circuit identification CLCT Network management control counts CLDIR Call direction CLDN Calling line directory number CLEI Common language equipment identifier CLF Creating dips upper bound load factor CLFI Common lang facilities identication CLI COSMOS processed alit reports CLI Calling line ident CLID Calling line identification CLIP Calling line identification presentation (i.251 c) CLIR Calling line identification restriction (i.251 d) CLK Clock CLL Creating dips lower bound load factor CLLI Common-language location identification CLNK Communication link CLNKs Communication links CLNORM Communication link normalization CLR Circuit layout record CLR Clear CLRC Circuit layout record card CLS CLCI in serial number format CLS Connectless-mode service CLSD Closed CLSV Class of service CLT CLCI telephone number format CLT Communications line terminal CLUS Cluster data (NTI) CM C-message frequency weighting CM Communication module CM Connection memory CM OCC video facility INTER/TRA blocal 1-26 CMAC Centralized maintenance and administration center CMAP Centralized maintance and administration position CMC Call modification completed (SS7: in ISUP) CMC Cellular mobile carrier CMC Cellular modile carrier CMC Construction maintenance center CMD Command CMDF Combined main distributing frame CMDS Centralized message data system CMF Capacity main station fill CMP Communication module processor CMP Communications module processor CMP Companion board CMP Corrective maintenancean practices CMPR Compares CMR Call modification request (SS7: in ISUP) CMR Cellular mobile radio CMRJ CMR reject (SS7: in ISUP) CMS Call management system CMS Circuit maintance system CMS Circuit maintance system 1C CMS Circuit maintenance system CMS Communications management subsystem CMS Conversational monitoring system CMT Cellular mobile telephone CMT Combined miscellaneous trunk frame CMU CCS measured usage CMU Colt measurement unit CN C-notch frequancy weighting CN Change notice CN Changel noticee CN Connection CN SSN network trunk INTER/TRA blocal 1-26 CN/A Customer name/address CN02 List of pay phones with coin disposal problems - 1AESS coin phone CN03 Possible trouble - 1AESS coin phone CN04 Phone taken out of restored service because of possible coin fraud CNA Communications network application CNAB Customer name/address bureau CNCC Customer network control center CNI Common network interface CNMS Cylink network management system CNS Complimentary network service CNS Concentrating network system CNT Count CNTS Counts CNVT Converted CO Central office CO Continuous (SARTS) CO OCC overseas connecting facility INTER/TRA blocal 1-26 CO UN Central office unit code COA Change over acknowledgement (SS7 in MTE) COAM Centralized operation COAM Customer owned and maintained COC Circuit order control COCOT Customer-owned coin-operated telephone COD Code CODCF Central office data connecting facility CODEC Coder/decoder COE Central office entity COE Central office equipment COEES COE engineering system COEES Central office equipment engineering system COER Central office equipment record COEST Central office equipment signature table COF Confusion received (outgoing) COFA Change of frame alignment (DS-1) COG Centralized operations group COGRDG Central office grounding COLP Connected line identification presentation COLR Connected line identification restriction COLT Central office limit table COLT Central office line tester COM Common controller COM Communication COM Complement size COM Computer output microfilm COM/EXP PCM-compander/expander COMM Comunication COMMS Central office maintenance management system COMMS-PM Central office maintenance management system-preventive Maintenance COMP Computed COMPNY Company COMPS Central Office Managenment Program (GTE) COMSAT Communications satellite CON Concentrator - COSMOS command COND Conditions CONF Conference calling (i.254 a) CONFIG Configutation CONN Connect msg. (i.451) CONN Connector CONN Nailed-up connections CONT Control CONTAC Central office network access CONUS Continental united states COO Change over order (SS7: in MTP) COP Call offering procedure COPY Data copied from one address to another - 1AESS copy CORC Commands and responses definition and compressing program (IOS) CORC Customer riginated recent change CORCs Customer-originated recent changes CORNET Corperate network COS Connection-mode service COSIB Central office platform operator service interface board COSMIC Common systems main interconnection frame system (frame) COSMOS Computer system for mainframe operations COT Centeral office terminal COT Central office technician COT Central office terminal COT Central office terminal (opposite to RT) COT Continuity (SS7: in ISUP) COTM Central office overload call timing (NTI) CP Cable pair CP Call processing parameters (NTI) CP Communication processor (SARTS) CP Concentrator identifier signaling link INTER/TRA blocal 1-26 CP Control program CPA Centralized/bulk power architecture CPC Cellular phone company CPC Circuit provision center CPC Circuit provisioning center CPC Circuit provisioning center (special services design group) CPCE Common peripheral controller equipment CPD Central pulse distributor CPD Common packet data channels CPE Customer premise equipment CPE Customer premises equipment CPG Call progress (SS7: in ISUP) CPH Cost per hour CPI COSMOS-premis interface CPI Computer private branch exchange interface CPIE CP or AM intervention interrupt error CPM COSMOS performance monitor CPM Citcuit pack module CPM Cost per minute CPMP Carrier performance measurement plan CPS Cycles per second CPU CCS capacity usage CPU Call pick up CPU Call pickup group CPU Central processing unit CQM Circuit group query (SS7: in ISUP) CQR CQM response CR Carriage return CR Control Record CR Control response CR OCC backup facility INTER/TRA blocal 1-26 CRAS Cable repair administrative system CRC Customer record center CRC Cyclic redundancy check CRCOK CRC ok! (C/I channel code) CRE Create CRED Credit card calling (i.256 a) CREF Connection refused CREG Concentrated range extension with gain CRF Continuity recheck failure (outgoing) CRFMP Cable repair force management plan CRG Creg tag CRIS Customer records information system CROT Centralized automatic reporting of trunks (NTI) CRR Reset received (incoming) CRS Centralized results system CRSAB Centralized repair service answering bureau CRST Specific carrier restricted CRT Cathode ray tube CRT Cathode-ray tube CRTM Central office regular call processing timing (NTI) CS Cable switching CS Call Store CS Channel service INTER/TRA blocal 1-26 CS Conducted susceptibility (EMS) CS Customer class of service CSA Carrier serving area CSACC Customer service administration control center CSAR Centralized system for analysis and reporting CSAR Centralized system for analysis reporting CSC Cell site controller CSD Circuit specific data CSDC Circuit switched digital capability CSDN Circuit-switched data network (t.70) CSF Critical short form CSMA/ Carrier sense multiple access CSMCC Complex services maintenance control center CSNET Computer science network CSO Central services organization CSO Cold start only (in eoc) CSP Coin sent paid CSP Coin set paid CSPDN Circuit-switched public data network CSR Clock shift register CSR Customer service records CSS Computer sub-system CSS Computer subsystem CSS Customer service system CSSC Customer service system center CST Call state or current state or change state (QUASI SDL) CST Combined services terminal CSU Channel service unit CSUS Centralized automatic message accounting suspension (NTI) CT Call transfer (i.252 a) CT Control terminal CT SSN tie trunk INTER/TRA blocal 1-26 CT01 Manually requested trace line to line information follows - 1AESS CT02 Manually requested trace line to trunk information follows - 1AESS CT03 Intraoffice call placed to a number with CLID - 1AESS call trace CT04 Interoffice call placed to a number with CLID - 1AESS call trace CT05 Call placed to number on the ci list - 1AESS call trace CT06 Contents of the CI list - 1AESS call trace CT07 ACD related trace - 1AESS call trace CTC Central test center CTC Centralized test center (DDS) CTC Centralized testing center CTC Complete a cable transfer or complete a cable throw CTD Circuit test data CTE Cable throw order establishment CTF Display the contacter-transducer file CTI Circuit termination identification CTL Cable throw with line equipment assignment CTL Central operator control CTM Cable throw modification CTM Contac trunk module CTMC Communications terminal module controller CTMS Carrier transmission measuring system CTO Call transfer outside CTO Continuity timeout (incoming) CTP Print cable transfer frame work CTR Cable throw replacement CTS Cable throw summary CTS Call through simulator CTS Clear to send CTSS Cray time sharing system CTT Cartridge tape transport CTT Cut through tag CTTC Cartridge tape transport controller CTTN Cable trunk ticket number CTTU Central trunk testing unit. CTU Channel test unit CTW Withdraw a cable transfer or a cable throw CTX Centrex group number CTX Various centrix verifies CU Channel unit CU Channel unit CU Control unit CU Customer unit CU/EQ Common update/equipment system CU/TK Common update/trunking system CUCRIT Capital utilization criteria CUG Closed user group (i.255 a) CUP Common update processor CUSTAT Control unit hardware status CUT Circuit under test CUTOVER Cutover (pre-cut) inactive state. CV OCC voice grade facility INTER/TRA blocal 1-26 CVN Vacant national number received (outgoing) CVR Compass voice response CW Call waiting (i.253 a) CW OCC wire pair facility INTER/TRA blocal 1-26 CWC City-wide centrex CWD Call waiting deluxe CXC Complex service order input checker CXM Centrex table management CXT Complex order inquiry for nac review CZ OCC access facility INTER/TRA blocal 1-26 CorNet Corporate network protocol (ECMA and CCITT q.930/931 oriented)