| ==Phrack Magazine== |
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| Volume Four, Issue Forty-Three, File 22 of 27 |
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| {Acronyms Part II} |
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| D Data |
| D Default supervision |
| D Digits |
| D Dispach |
| D Hotel/motel equipment from trouble report (TSPS only) |
| D-CTL D channel controller (IDEC) |
| D/A Digital to analog |
| D1PK DS-1 interface pack (SCM-10S NTI) |
| D1PK DS-1 interface pack (SCM-10S MUX NTI) |
| DA Digital data off-net extention INTER/TRA blocal 1-26 |
| DA Directory assistance |
| DAC Digital to analog converter |
| DAC Dispatch Administration Center |
| DACC Directort assistance call completion |
| DACK Direct memory access acknowledge |
| DACOM Data communictions corp. of korea (ROK) |
| DACS Digital access cross-connect system |
| DACS Digital accessed and cross-connected system |
| DACS Directory assistance charging system |
| DACTVTD Deactivated |
| DAEDR Delimitation |
| DAIS Distributed automatic intercept system |
| DAML Digital added main line (pair gain) |
| DAMT Direct access mechanize testing |
| DAP Display administration process |
| DAP Document application profile |
| DARC Division alarm recording center |
| DART Distribution area rehabilitation |
| DARU Distributed automatic intercept system audio response unit |
| DAS Data auxiliary set |
| DAS Directory assistance system |
| DAS Distributor and scanner |
| DAS-WDT Distributor and scanner-watch dog timer |
| DAS/C Directory assistance system/computer |
| DASD Direct access storage device |
| DASS2 Digital access signaling system 2 (BT) |
| DAU Digital access unit |
| DAV Data above voice |
| DAY Delete an assembly |
| DB DSSDS 1.5 mb/s access line INTER/TRA blocal 1-26 |
| DB Decibel |
| DBA Data base administrator |
| DBAC Data base administration center |
| DBAS Data base administration system |
| DBCS Data bank control system |
| DBL Data base load |
| DBM Database manager |
| DBMS Data base management system |
| DBOS Data bank organization system |
| DBS Duplex bus selector |
| DBSS Data bank security system |
| DC Device cinfirmation (C/I channel code) |
| DC Dial code |
| DC Direct current |
| DCC Data collection computer |
| DCC Data country code (ISO 7498) |
| DCC Destination code cancellation |
| DCC Destination code cancellation control |
| DCC Digroup core controller |
| DCCS Discontiguous shared segments |
| DCD Data collection device |
| DCE Data circuit terminal equipment |
| DCE Data circuit-terminating equipment |
| DCE Data communications equipment |
| DCE Digital carrier equipment |
| DCG Default cell group |
| DCH D channel handler |
| DCH D-channel handling bit |
| DCH Discharge |
| DCHOOS D-channel is out of service. |
| DCL Data clock (i.e. IOM2) |
| DCL Dec control language |
| DCLU Digital carrier line uint |
| DCLU Digital carrier line unit |
| DCM Digital carrier module |
| DCME Digital circuit multiplexing equipment |
| DCMS Distributed call measurement system |
| DCMU Digital concentrator measurement unit |
| DCN List disconnected and changed numbers |
| DCP D channel processor |
| DCP Duplex central processor |
| DCPR Detailed contuing property record (pics/dcpr) |
| DCPSK Differential coherent phase-shift keying |
| DCS Data communications subsystem |
| DCS Digital crosconnect system |
| DCS Digital cross-connect system |
| DCS Direct current signaling |
| DCSO Display compleated service order (lmos command) |
| DCT Digital carrier trunk |
| DCTB Dct bank |
| DCTEXT DCT extended |
| DCTN Defense commercial telecommunications network |
| DCTS Dimension custom telephone service |
| DCTUCOM Directly connected test unit common board |
| DCTUPORT Directly connected test unit port circuit |
| DCn Device control n |
| DD Data downstream (i.e. IOM2) |
| DD Delay dial |
| DD Disk drives |
| DD Due date |
| DD Total switching control center (SCC) and field work time. |
| DDC Direct department calling |
| DDCMP Daily display conversation mode and printer |
| DDD Direct distance dialing |
| DDGT Digital data group terminal |
| DDI Direct dialing-in (i.251 A) |
| DDN Defense data network |
| DDOV Digital data over voice |
| DDS DDS loopback test (SARTS command) |
| DDS Dataphone digital service |
| DDS Digital data service |
| DDS Digital data system |
| DDS Digital data system (the network) dataphone digital |
| DDS Digital dataphone service |
| DDS Display the DS table |
| DDX Digital data exchange |
| DDX Distributed data exchange |
| DEAC Deactivation (C/I channel code) |
| DEACT Deactivate |
| DEC Digital equipment corporation |
| DECT Digital european cellular phone |
| DEL Delete |
| DEN Digital equipment number |
| DERP Defective equipment replacement program |
| DES Data encryption standard |
| DES Destination |
| DEST Destinations |
| DET Detatch MSG. (i.451) |
| DEV Deviation |
| DEV Device |
| DEW Distant early warning (line) |
| DF Distributing frame |
| DF Distribution frame |
| DF HSSDS 1.5 mb/s hub to hub INTER/TRA blocal 1-26 |
| DFC Disk file controller |
| DFI Digital facility interface |
| DFI Digital facility interface. |
| DFI Digital family interface |
| DFIH Digital facility interface circuit pair |
| DFMS Digital facility management system |
| DFTAC Distributing frame test access circuit |
| DG HSSDS 1.5 mb/s hub to earth station INTER/TRA blocal 1-26 |
| DGCT Diagnostic control table |
| DGN Diagnose |
| DGN Memory failure in CS/PS diagnostic program - 1AESS mem diag |
| DH Digital service INTER/TRA blocal 1-26 |
| DI Deactivation indication (C/I channel code) |
| DI Direct-in dial INTER/TRA blocal 1-26 |
| DI Unk division? |
| DIA Document interchange architecture |
| DIAG Diagnostic |
| DIC Digital concentrator |
| DIC Digital interface controller |
| DID DI downstream |
| DID Direct inward dialing |
| DIF Digital frame interface |
| DIF Digital interface |
| DIF Digital interface frame |
| DIFF Difference |
| DILEP Digital line engineering program |
| DIM Data in the middle |
| DIP Dedicated inside plant COSMOS command |
| DIP Dip creation option |
| DIP Document interchange protocol (lower sublayer of OSI layer 6) |
| DIP Dual in-line package |
| DIR Direction |
| DIR Directory |
| DIR Standard dip report |
| DIS Disconnect |
| DIS Display |
| DISA Direct inward system access |
| DISABL Disable |
| DISC Disconnect (LAP-D command) |
| DISD Direct inward subscriber access |
| DIST Distribute point board |
| DIU Deactivate indication |
| DIU Digital interface unit |
| DIU Digroup interface unit (DACS) |
| DIV (Ger) Digital exchange |
| DIVF (Ger) Div for long distance service |
| DIVO (Ger) Div for local service |
| DJ Digit trunk INTER/TRA blocal 1-26 |
| DK Data link INTER/TRA blocal 1-26 |
| DL Dial |
| DL Dictation line INTER/TRA blocal 1-26 |
| DL1PE DLI 1 parity error |
| DL5MDA Someone who collects each ISDN abbrevation crossing his way |
| DLAB Divisor latch access bit |
| DLC Data link control |
| DLC Data link controller assignment for clusters |
| DLC Digital loop carrier |
| DLCI Data link connection identifier (i.440: SAPI+TEI) |
| DLCU Digital line carrier unit |
| DLE Data link escape (ascii control) |
| DLI Data link interface |
| DLI0I Data link 0 interrupt |
| DLI1I Data link 1 interrupt |
| DLISW DLI switch error |
| DLL Dial long lines |
| DLM Data link module |
| DLN Direct link node |
| DLNORSP Init response not received from data link. |
| DLOPE Dual link interface (DLI) 0 parity error |
| DLP Data level point |
| DLS Digital line section |
| DLS Digital link service |
| DLTHA Display trouble history all (LMOS command) |
| DLTU Digital line trunk unit |
| DLTU Digital line/trunk unit |
| DLU-PG Digital line unit-pair gain |
| DLUC Digital line unit control |
| DLYR Delayed readiness |
| DM DMR |
| DM Delta modulation |
| DM Disconnected mode (LAP-D response) |
| DMA Direct memory access |
| DMB Digital multipoint bridge |
| DMERT Duplex multiple environment real time |
| DMI Digital multiplexed interface |
| DML Data manipulation logic |
| DMLHG DSN/AUTOVON MLHG |
| DMQ Deferred maintenance queue |
| DMS Data management system |
| DMS Digital multiplex system (i.e. DMS 10, DMS 100) |
| DMS Digital multiplexed system |
| DMU Data manipulation unit |
| DN Directory number |
| DN Directory numbers |
| DN Distribution network panel |
| DN Down |
| DN Mail distribution frame - COSMOS defult |
| DNC Dynamic network controller |
| DNH Directory Number Hunting |
| DNHR Dynamic non hierarchical routing |
| DNHR Dynamic nonhierarchical routing |
| DNI Digital network interconnecting |
| DNIC Data network identification code |
| DNIC Data network identification code (ISO 7498) |
| DNR Detaled number record |
| DNR Dialed number recorder |
| DNX Dynamic network X-connect |
| DO Direct-out dial INTER/TRA blocal 1-26 |
| DOC Dynamic overload control |
| DOC Dynamic overload controls messages. |
| DOCS Display operator console system |
| DOD (USA) Dept. of defense |
| DOJ Department of justice |
| DOM Data on master group |
| DOTS Digital office timing supply |
| DOV Data over voice |
| DP Demarcation point |
| DP Dial pulse |
| DP Digital data-2 4 kb/s INTER/TRA blocal 1-26 |
| DPA Different premises address |
| DPA Dispatch |
| DPA Distributed power architecture |
| DPAC Dedicated plant assignment card |
| DPAC Dedicated plant assignment center |
| DPC Destination point code (SSY) |
| DPCM Differential PCM |
| DPE Data path extender |
| DPGS Digital pair gain systems |
| DPIDB Direct PIDB |
| DPIDB Directly connected peripheral interface data bus |
| DPLL Digital phase locked loop |
| DPN Dip purge number |
| DPN-PH Data packet network-packet handler |
| DPNSS Digital private network signaling system (BT) |
| DPP Discounted payback period |
| DPP Distributed processing peripheral |
| DPR Dip report and removal |
| DPSK Differential phase shift keying |
| DPSK Differential phased-shift keying |
| DPT Data parameter testing |
| DPT Department name |
| DPU Digital patch unit |
| DQ Digital data-4 8 kb/s INTER/TRA blocal 1-26 |
| DQR Design quota system report |
| DQS Design quota system |
| DR Data ready |
| DR Data receive |
| DR Deactivate request (C/I channel code) |
| DR Deactivation request |
| DR Digital data-9.6 kb/s INTER/TRA blocal 1-26 |
| DRAM Digital record announcement machine |
| DRAM Dynamic ram |
| DRCS Dynamically redefinable character sets |
| DRHR Division of revenue hourly |
| DRMU Digital remote measurement unit |
| DRTLRT Dial repe tie lindal repeatie t |
| DRU DACS remote unit |
| DS Data set |
| DS Digital carrier span |
| DS Digital signal |
| DS Direct signal |
| DS-0 Digital signal 0 (one channel at 64 kb/s) |
| DS-0A Digital signal at a subrate level on DS-0 for one customer |
| DS-0B Digital signals at a subrate level on DS-0 facility for one |
| or more CU |
| DS-1 Digital signal level one |
| DS0 Digital signal zer0 |
| DSBAM Double-sideband amplitude module |
| DSBLD Disabled (default). |
| DSC Digital cross-connection systems |
| DSC Digital subscriber controller AM79C3A |
| DSCT Digital service copper transport |
| DSDC Direct service dial capability |
| DSI Digital speech interpolation |
| DSIG Direct signaling |
| DSK Disk |
| DSL Digital subscriber line |
| DSL Digital suscriber line |
| DSLG digital subscriber line group (DSLG) |
| DSLINIT DSL initialization. |
| DSM Digital switching module |
| DSMX (Ger) Digital signal multiplexer |
| DSN Defense switched network/automatic voice network |
| DSN Digital signal (level) n |
| DSNE Double shelf network equipment frame |
| DSNOFC DSN/AUTOVON office totals |
| DSNTG DSN/AUTOVON trunk group |
| DSP Digital signal processing |
| DSP Digital signal processing or digital signal processor |
| DSP Digital signal processor |
| DSP Domain specific part (ISO 7498) |
| DSR Data set ready |
| DSR Display results |
| DSR Dynamic service register |
| DSRTP Digital service remote test port |
| DSS Data station selector |
| DST Destination of order response |
| DSU Data service unit |
| DSU Data servicing unit |
| DSU Digital service unit |
| DSU2 Diditalservice unit |
| DSX Digital cross-connect |
| DSX Digital signal cross-connect |
| DT DI-group terminal |
| DT Data through (C/I channel code in test mode) |
| DT Data transmit |
| DT Detect dial tone |
| DT Due time |
| DT1 Data form class 1 |
| DTAC Digital access connector |
| DTAC Digital test access connector |
| DTAC Digital test access connector (links SMAS and SLC-96) |
| DTAM Document transfer access and manipulation |
| DTAS Digital test access system |
| DTAU Digital test access unit |
| DTC Data test center |
| DTC Di-group terminal controller |
| DTC Digital telephone controller (ARCOFI + IBC + ICC) |
| DTC Digital trunk controller |
| DTE Data terminal equipment |
| DTE Print current date |
| DTF Dial tone first (pay phone) |
| DTG Direct trunk group |
| DTIF Digital transmission interface frame |
| DTM Data test module |
| DTM Digital trunk module |
| DTMF Dual-tone multifrequency |
| DTR Data terminal ready |
| DTRK Digital Trunks |
| DTRK Digital trunks (line and trunk) |
| DTU Di-group terminal unit |
| DTU Digital test unit |
| DU Data upstream (i.e. IOM2) |
| DU Deactivation request upstream (C/I channel code) |
| DUIH Direct user interface handler |
| DUP Data user part |
| DUP Duplicate |
| DUR Duration |
| DUV Data under voice |
| DVA Design verified and assigned |
| DVX Digital voice exchange |
| DW Digital data-56 kb/s INTER/TRA blocal 1-26 |
| DX Duplex |
| DY Digital service (under 1 mb/s) INTER/TRA blocal 1-26 |
| DYRECT Sides dynamic real time communication tester (in sitest) |
| E E (receive) signal lead (moreover Ear part of E&M) |
| E Equipment direction |
| E Remote trunk arrangement position subsystem (rta/pss) from troubl |
| E&M Receive & transmit/ear & mouth signaling |
| E-COM Electronic computer originated mail |
| E1 Equipment system |
| E800 Enhanced 800 Service |
| E911 Enhanced 911 |
| EA Equal access end office |
| EA Expedited data acknowledgement (SS7: in SCCP) |
| EA Extended adress |
| EA Switched acess INTER/TRA blocal 1-26 |
| EAAT Equal access alternative technologies |
| EADAS Engineering and administration data acquisition system |
| EADAS/NM EADAS/network management |
| EAEO Equial access end office |
| EAI Emergency action interface |
| EAP Equal access plan |
| EARN European academic research network |
| EAS Extended announcement system |
| EAS Extended area service |
| EASD Equal access service date |
| EB Enfia ii end office trunk INTER/TRA blocal 1-26 |
| EBAC Equipmentc billing accuracy control |
| EBCDIC Extended binary coded decimal interexchange code |
| EBSP EBS prefix translations |
| EBSP Enhanced business services prefix translations |
| EC ESS entity and control group number |
| EC Echo canceller |
| EC Enfia ii tandem trunk INTER/TRA blocal 1-26 |
| EC Environment code |
| EC European community |
| EC Exchange carriers |
| ECAP Electronic customer access program |
| ECC Enter cable change |
| ECCS Economic c (hundred) call seconds |
| ECD Equipment configuration database |
| ECDMAN Equipment configuration database manager |
| ECF Enhanced connectivity facility |
| ECL Emitter coupled logic |
| ECMA European computer manufactueres association |
| ECPT Electronic coin public telephone |
| ECR Exchange carrier relations |
| ECS Electronic crosconnect system |
| ECS Equipment class of service |
| ED Enter date |
| EDAC Electromechanical digital adapter circuit |
| EDD Envelope delay distortion |
| EDI Electronic data interchange |
| EDP Electronic data processing |
| EDSC Electronic directory customer counts (ISDN BRCS) |
| EDSX Electronic digital signal x-connect |
| EDZ Facility emergency assignment list |
| EE Combined access INTER/TRA blocal 1-26 |
| EE Initials of supervisor reviewing this ticket. |
| EEC Electronic equipment cabinet |
| EECT End-to-end call trace |
| EEDP Expanded electronic tandem switching dialing plan |
| EEE Electronic equipment enclosures |
| EEHO Either end hop off |
| EEI Equipment-to-equipment interface |
| EEPROM Electrically erasable programmable read only memory |
| EF Entrance facility-voice grade INTER/TRA blocal 1-26 |
| EFCTS Electronic custom telephone service |
| EFRAP Exchange feeder route analysis program |
| EG Type #2 telegraph INTER/TRA blocal 1-26 |
| EIA Electronic industries association |
| EIS Expanded inband signaling |
| EISS Economic impact study system |
| EIU Extended interface unit |
| EIn Error indication n (C/I channel code) |
| EKTS Electonic key telephone service |
| EKTS Electronic key telephone sets |
| EL Emergency reporting line INTER/TRA blocal 1-26 |
| ELA Entity load analysis |
| ELDS Exchange line data service |
| ELECL Electrical |
| ELEMNTS Elements |
| ELI Electrical line interface |
| EM Emergency reporting center trunk INTER/TRA blocal 1-26 |
| EM Encription module |
| EM End of medium (ASCII control) |
| EMC Electromagnetic capability |
| EMC Electromagnetic compatibility |
| EME Electromagnetic emission |
| EMI Electromagnetic interference |
| EML Expected measured loss |
| EMM Expandable mos memory |
| EMS Electromagnetic susceptibility |
| EMS Expanded memory specification |
| EMSCC Electromechanical switching control center |
| EMV EMC (german) |
| EN Entity |
| EN Entity number |
| EN Exchange network acess facility INTER/TRA blocal 1-26 |
| ENABL Enable |
| ENFIA Exchange network facility for interstate access |
| ENHMT Enhancement |
| ENQ Enquiry |
| ENTDT Entered date and/or time |
| EO End office |
| EOC Embedded operation channel |
| EOE Electronic order exchange |
| EOM End of message |
| EOS Extended operating system |
| EOTT End office toll trunking |
| EP Entrance facility-program grade INTER/TRA blocal 1-26 |
| EP Expedited data (SS7: in SCCP) |
| EPIC Extended PIC |
| EPL Electronic switching system program language |
| EPROM Erasable programmable read-only memory |
| EPSCS Enhanced private switched communication service |
| EQ Equalizer |
| EQ Equipment only-(network only) assignment INTER/TRA blocal 1-26 |
| EQPT Equipment |
| ER Enhancement request |
| ER Error register |
| ER Exception report |
| ERAR Error return address register |
| ERC Error control (IOS) |
| EREP Environmental recording editing and printing |
| ERF Emergency restoration facility |
| ERL Echo return loss |
| ERP Effective radiated power |
| ERPMP Exception report pumper |
| ERR Error |
| ERRS Errors |
| ERTS Error rate test set |
| ERTS Error rate test sets |
| ERU Error return address update |
| ES Extension service-voice grade INTER/TRA blocal 1-26 |
| ESAC Electronic systems assistance center |
| ESAP Emergency Stand-Alone prefix |
| ESAP Emergency stand-alone prefix |
| ESB Emergency service bureau |
| ESC Enhanced speech circuit |
| ESC Escape (ASCII control) |
| ESC Three way calling USOC |
| ESCC2 Extended high level serial communication controller |
| ESCC8 Like ESCC2 |
| ESD Electrostatic discharge |
| ESD Extened super framing |
| ESF Extended super frame |
| ESF Speed calling USOC |
| ESFF Extended superframe format |
| ESL Emergency stand-alone |
| ESL Essental service |
| ESL Speed calling 8 code USOC |
| ESM Call forwarding USOC |
| ESM Economic study module |
| ESMTC Electronic system maintance |
| ESN Electronic serial number (Cell) |
| ESN Electronic switched network |
| ESN Emergency service number |
| ESP Enhanced service procider |
| ESP Enhanced service providers |
| ESP Essential service protection |
| ESP Print entire summary table |
| ESS Electronic switching system |
| ESSX Electronic switching systen exchange |
| EST Established |
| ESTAB Establish |
| ESX Call waiting USOC |
| ET Entrance facility-telegraph grade INTER/TRA blocal 1-26 |
| ET Exchange termination |
| ETAS Emergency technical assistance |
| ETB End of transmission block |
| ETC Estimated trunk ccs value |
| ETF Electronic toll fraud |
| ETL Equipment test list |
| ETN Electronic tandem network |
| ETRI Electronics and telecommunications research institute (ROK) |
| ETS Electronic tandem switching |
| ETS Electronic translation systems |
| ETSACI Electronic tandem switching adminstration channel interface |
| ETSSP ETS status panel |
| ETX End of text |
| EU End user |
| EU Extension service-telegrasph grade INTER/TRA blocal 1-26 |
| EUPOT End user-point of termination |
| EV Enhanced emergency reporting trunk INTER/TRA blocal 1-26 |
| EV Expected value |
| EVB Busy call forward USOC |
| EVC Bust call forward extended USOC |
| EVD Delayed call forward USOC |
| EVD Delayed call forwarding |
| EVST (Ger) End exchange |
| EW Off network MTS/WATS equivalent service INTER/TRA blocal 1-26 |
| EWSD (Ger) Electronic dialing system (digital) |
| EX Exercise |
| EXD ECS crossloading option |
| EXD Extra digit |
| EXD Extra digit (MDII) |
| EXP Extra pulse |
| EXP Extra pulse (MDII) |
| EXT Extension |
| EXTC Expenditure type code |
| F Facility direction |
| F Fault (indicator) |
| F Office or base unit from trouble report. |
| F1 Facility system |
| FA Frame aligner |
| FA Fuse alarm |
| FAA Facility accepted (SS7 in ISUP) |
| FAC Facility |
| FAC Facility Assiment Center |
| FACD Facility changed msg. |
| FACS Facilities assignment and control system |
| FADS Dorce administration |
| FANALM Fan alarm |
| FAP Facilities analysis plan |
| FAR Facility request (SS7: in ISUP) |
| FAR Federal acquisition regulation |
| FAS Frame alignment signal |
| FAST First application system test |
| FAT File allocation table |
| FAX Faximile |
| FC Feature control |
| FC Frame control |
| FC From cable |
| FC/EC Function code and environment code |
| FCA Final closure abandon (MDII) |
| FCAP Facility capacity |
| FCC Federal communications commission |
| FCC Forward command channel |
| FCC Frame control center |
| FCD Frame comtinuity date |
| FCG False cross or ground |
| FCS File control systemction |
| FCS Frame check sequence |
| FD Private line-data INTER/TRA blocal 1-26 |
| FDD Frame due date |
| FDDI Fiber distributed data interface (x3t9.5) |
| FDI Feeder/distribution interfaces |
| FDM Frequency division multiplex |
| FDM Frequency-division multiplexing |
| FDMA FDM access |
| FDP Field development program |
| FDT Frame due time |
| FDX Full duplex |
| FDY Set fiscal day for LAC |
| FEA Custom calling feature/PIC |
| FEA Customer feature |
| FEAT Feature |
| FEAT Features |
| FEBE Far end block error (IOM2 monitor message) |
| FEC Forward error correction |
| FECC Front end communication computer |
| FED Far end data |
| FELP Far end loop process |
| FEMF Foreign electro-motive force |
| FEPS Facility and equipment planning system |
| FEV Far end voice |
| FF Check appropriate space where trouble is located |
| FF Form feed |
| FG Group-supergroup spectrum INTER/TRA blocal 1-26 |
| FGA Feature group A |
| FGB Feature group B |
| FGC Feature group C |
| FGD Feature group D |
| FGE Feature group E |
| FGK Feature group K (ISDN Q.931) |
| FIB Forward indication bit (SS7) |
| FID Field indentifiers |
| FIFO First in |
| FIFO First in first out (storage) |
| FIL Filter |
| FIN Facility information msg. |
| FIOC Frame input/output controller |
| FIP Facility interface processor |
| FIPS Federal information processing standards |
| FISU Fill in signal unit (SS7) |
| FITL Fiber in the loop |
| FJ Frame jump (C/I channel code) |
| FKP False key pulse |
| FKP False key pulse (MDII) |
| FL Fault locate |
| FL Fault location |
| FLA Flag |
| FLD Field |
| FLEXCOM Fiber optic communication |
| FLR Frame layout report |
| FLT Flat |
| FM Frequency modulation |
| FM01 DCT alarm activated or retired - 1AESS |
| FM02 Possible failure of entire bank not just frame - 1A |
| FM03 Error rate of specified digroup - 1AESS |
| FM04 Digroup out of frame more than indicated - 1AESS |
| FM05 Operation or release of the loop terminal relay-1AESS |
| FM06 Result of digroup circuit diagnostics -1AESS |
| FM07 Carrier group alarm status of specific group - 1AESS |
| FM08 Carrier group alarm count for digroup - 1AESS |
| FM09 Hourly report of carrier group alarms - 1AESS |
| FM10 Public switched digital capacity failure - 1AESS |
| FM11 PUC counts of carrier group errors - 1AESS |
| FMAC Facility maintance administration center |
| FMAC Facility maintenance and control |
| FMC Force management center |
| FMM Finite message machine |
| FN Feature number |
| FN File name |
| FNBE Far and near end block error (IOM2 monitor message) |
| FNPA Foreign numbering plan area |
| FOA First office application |
| FOC Fiber optic communications |
| FON Fiber optics network |
| FOR Frame order report |
| FORPOT Foreign potential. |
| FOS Frame operations summary |
| FOS-ALC Fiber optic systems maintance - Alcatel |
| FOS-ROCK Fiber optic system maintance - Rockwell |
| FOT Forward transfer (SS7: in ISUP) |
| FP Functional protocol |
| FPC Foundation peripheral controller |
| FPC Frequency comparison pilots |
| FPS Fast packet switching |
| FR Fire dispatch INTER/TRA blocal 1-26 |
| FR Fixed resistance |
| FR Flat rate |
| FRAC Frame aligner circuit |
| FRC Forced request configuration |
| FREQ Frequency |
| FRJ Facility rejected msg. (SS7 in ISUP) |
| FRMR Frame reject (LAP-D response) |
| FRPS Field reliability performance studies |
| FRQ Facility request message |
| FRS Flexible route selection |
| FS File separator |
| FS/SYM Function Schematic/Symbol Numbers (1AESS Test access) |
| FSA False start abandon |
| FSA False start abandon on incoming trunk |
| FSC Frame synchronization clock (i.e. IOM2) |
| FSK Frequency shift keying |
| FSN Forward sequence number |
| FT Foreign exchange trunk INTER/TRA blocal 1-26 |
| FT Frame time |
| FTA Frame transfer analysis |
| FTC Frame transfer completion |
| FTE Frame transfer establishment |
| FTG Final trunk group |
| FTL Frame transfer lets |
| FTP File transfer protocol |
| FTR Frame transfer reprint |
| FTS Federal telecommunications system |
| FTW Frame transfer withdrawal |
| FUNCS Functions |
| FV Voice grade facility INTER/TRA blocal 1-26 |
| FW Wideband channel INTER/TRA blocal 1-26 |
| FWD Forward |
| FWM Frame work management |
| FWS Frame work station |
| FX Foreign exchange |
| FX Foreign exchange INTER/TRA blocal 1-26 |
| FXO Foreign exchange circuit office direction |
| FXS Foreign exchange circuit station direction |
| G Spare box. use for special studies. |
| GAP (Ec) group of analysis and provision (for ONP) |
| GB Great britain |
| GBS Group bridging service |
| GC Group card |
| GCE Gated Oscillator Error |
| GCI General circuit interface (IOM/u(k0)-interface) |
| GCON Generic conditions |
| GCP Generate Control pulse |
| GCR General configuration register |
| GCS Group control system |
| GDSUCOM Global DSU common |
| GDSUCOM Global digital service unit common |
| GDX Gated diode crosspoint |
| GDXACC Gated diode crosspoint access |
| GDXC Gated diode crosspoint compensator |
| GDXCON Gated diode crosspoint control circuit |
| GEISCO General electric information services company |
| GFR General facility report |
| GG Getails of reported trouble. |
| GH Gain hit |
| GHZ Gigahertz |
| GID Group ID |
| GKCCR Generated key collection and compression routine |
| GLA Generate lists for assignment |
| GND Ground |
| GNS Gainslope |
| GNS Gainslope test (SARTS command) |
| GOC General order control (TIRKS) |
| GOS Grade of service |
| GP Group processor |
| GPA Gas pressure alarm |
| GPIB General purpose interface bus |
| GPPC General purpose power controller |
| GPS Global positioning system |
| GR General requirments (BellCoRe) |
| GRA GRS acknowledgement |
| GRASP Generic access package |
| GRD Ground fault. |
| GRD Ground. |
| GRID Line unit grid. |
| GRP Group |
| GRP MOD Group modulator |
| GRS Circuit group reset (SS7: in ISUP) |
| GS Ground start (on-hook normal) |
| GS Group separator |
| GSA General services administration |
| GSAT General telephone and electronics satellite corporation |
| GST Ground start signaling |
| GSZ Group size |
| GTC General telephone company |
| GTE General telephone electronics |
| GTEI Global tei |
| GTS Gamma transfer service |
| GTT Global title transmission |
| GWY Gateway |
| Ger German |
| H Hold state (in EOC) |
| H Hours |
| H Trouble ticket number. subparagraph 5.6.4. |
| H&D High and dry (trunk test) |
| H- High- |
| H-RAP Hardware reliability assurance program |
| HAC Hands-free add-on circuit (for speakerphone) |
| HBS Hunt group blocks of spares |
| HC High capacity 1.544 mb/ps-service code for LATA access |
| HC Hunt count |
| HCDS High capacity digital service |
| HCDS High-capacity digital services |
| HCFE High-capacity front end |
| HCSDS High-capacity satellite digital service |
| HCTDS High-capacity terrestrial digital service |
| HD High capacity 3.152 mb/ps-service code for LATA access |
| HDB3 High-density bipolar 3 (cept PRI) |
| HDFI HSM digital facilities interface |
| HDLC High level DLC |
| HDLC High-level data link control |
| HDSL High bit-rate digital subscriber line |
| HDTV High definition television (soon to be the new buzz word!!) |
| HDW Hardware |
| HDX Half duplex |
| HE High capacity 6.312 mb/ps-service code for LATA access |
| HEAP Home energy assistance program |
| HEHO High end hop off |
| HF High capacity 6.312-service code for LATA access |
| HF Hunt-from telephone number |
| HFCC High capacity facility control center |
| HFR Hardwara failure rate |
| HG High capacity 274.176 mb/s-service code for LATA access |
| HGBAF Hardware group blocking acknowledgment failure |
| HGR Hunt group report |
| HGS Hunt group summary |
| HGUAF Hardware group unblocking acknowledgment failure |
| HH History header |
| HH Record of repair activity. |
| HI High |
| HI High impedance (C/I channel code) |
| HI Highway interrupt |
| HIC Hybrid integrated circuit |
| HIM Host interface module |
| HIS Hunting ISH |
| HK Hook |
| HL IT Siemens semiconductors (hl) |
| HLC Highest lead factor group count |
| HLDG Holding |
| HLLAPI High level language application program interface |
| HLSC High-level service circuits |
| HM1 Intercom plus USOC |
| HMCL Host message class assignment |
| HMP Intercom plus |
| HNPA Home numbering plan area |
| HNS Hospitality network service |
| HOBIC Hotel billing information center |
| HOBIS Hotel billing information system |
| HOLD Call hold (i.253 b) |
| HP Hewlett-packard |
| HP Non-DDS digital data 2.4 kb/s INTER/TRA blocal 1-26 |
| HPO High performance option |
| HQ Non-DDS digital data 4.8 kb/s INTER/TRA blocal 1-26 |
| HR Hour |
| HR Non-DDS digital data 9.6 kb/s INTER/TRA blocal 1-26 |
| HRS Hours prefix |
| HS High capacity subrate-service code for LATA access |
| HSCC High level serial communication controller sab82520 |
| HSCX Extended hscc sab82525 |
| HSM Host switching module |
| HSSDS High-speed switched digital service |
| HT Horizontal tabulator |
| HT Hunt-to telephone number |
| HTI Highway transfer interrupt |
| HU High usage |
| HU High-usage trunk |
| HUNT Hunting |
| HUTG High usage trunk group |
| HW High and wet. |
| HW High-and-wet |
| HW Non-DDS digital data 56 kb/s INTER/TRA blocal 1-26 |
| HW Pcm highway |
| HZ Hertz |
| I Cable and pair or associated equipment |
| I Information (LAP-D command) |
| I Installation |
| I Invalid |
| I&I Investment and inventory |
| I&M Customer services installation and maintenance |
| I&M Installation & maintenance |
| I- Information (numbered i-frames) |
| I/O Ineffective other |
| I/O Input/output devices |
| I/O Tnput/output |
| I0 Feature removed |
| I1 Added feature |
| IA Immediate action |
| IA Ineffective attempts |
| IAA Ineffective attempt analysis. |
| IAAN Immediatel action report |
| IAC0 DLI 0 access error |
| IAC1 DLI 1 access error |
| IACS Intergrated access cross-connected system |
| IAD Incomplete address detected (incoming) |
| IAM Initial address msg. (SS7: in ISUP) |
| IB Instruction buffer |
| IBC ISDN burst transceiver circuit |
| IBN Integrated business network |
| IBROFC ISDN BRCS and Analog Office totals |
| IC Incoming call (x.25) |
| IC Independent carrier |
| IC Installation centers |
| IC Inter-LATA carrier |
| IC Inter-exchange carrier |
| IC Interexchange carriers |
| IC/MC Installation and maintence centers |
| ICA Incoming advance |
| ICA Incoming advance (MDII) |
| ICAN Individual circuit analysis |
| ICAO International civil aviation organization |
| ICC ISDN communications controller |
| ICC Interstate commerce commission |
| ICCU Inmate call control unit |
| ICD Interactive call distribution |
| ICL Intra-RSM communication link |
| ICLID Individual calling line id |
| ICM Integrated call management |
| ICN Interconnecting network |
| ICOM (taiwan) integrated communication |
| ICOT Intercity and outstate trunk |
| ICP Intercept |
| ICPOT Interexchange carrier-point of termination |
| ICSC Inter-LATA customer service center |
| ICSC Interexchange carrier service center |
| ICSC Interexchange customer service center |
| ICUG International closed user groups |
| ICUP Individual circuit usage and peg count |
| ICUR Individual circuit usage recorder |
| ID Idle control code |
| IDA (gb) interated digital access (b64+b8+d8) |
| IDC Information distribution companies |
| IDCI Interim defined central office interface |
| IDCU Integrated digital carrier unit |
| IDCU Integrated digital carrier unit . |
| IDCU Integrated digital carrier unit i.e. AT&T Series 5 RT FP 303G |
| IDDD International direct distance dialing |
| IDEC ISDN d-channel exchange controller |
| IDF Intermediate distributing frame |
| IDI Initial domain identifier (ISO 7498) |
| IDLC Integrated digital loop carrier |
| IDLC Intergrated digital loop carrier |
| IDP Individual dialing plan |
| IDPC Integrated data protocol controller |
| IDS Internal directory system |
| IDVC Integrated data/voice channel |
| IEC ISDN echo cancellation circuit |
| IEC Interexchange carrier |
| IEC International electrotechnical comission |
| IEC-P (old name of iec-q3) |
| IEC-Q1 Iec for 2b1q peb2091 |
| IEC-Q2 Iec-q specially for lt and NT1 (without microprocessor) |
| IEC-Q3 Iec-q with parallel processor interface (i.e. for daml) |
| IEC-T Iec for 4b3t peb2090 |
| IEEE Institute of electrical and electronics engineers |
| IEPC ISDN exchange power controller |
| IF Intermediate frequency |
| IFAC Integrated digital carrier unit facility |
| IFRB International frecuency registration board |
| IFRPS Intercity facility relief planning system |
| IFS (switzerland) integrated telecom service |
| IGS Idenitfy graphic subrepertoire (teletex) |
| IIN Integrated information network |
| IJR Input a jeopardy reason |
| ILC ISDN link controller |
| ILINE IDCU line counts. |
| IM Input mux |
| IM Interface module |
| IMA Additional ineffective machine attempts |
| IMAS Integrated mass announcement system |
| IMC IOS mailbox control |
| IMCAT Input message catalog |
| IMCF Interoffice multiple call forwarding |
| IMD Intermodulation distortion |
| IMM Input message manual |
| IMMU IOS memory management unit |
| IMP Impedance |
| IMP Impules per minute |
| IMP Interpersonal messaging protocol (x.420: p2) |
| IMS Interprocessor message switch |
| IMT Inter-machine trunk |
| IMTS Improved mobile telephone service |
| IMU Input measured ccs usage data |
| IN Intelligent network |
| IN/1 Intelligent network/1 |
| INA Intergrated network access |
| INAP Intelligent network access point |
| INC Incoming trunk groups |
| INC International calling |
| INC International carrier |
| INC SEL Incoming selector |
| INCAS-A Integrated network cost analysis - access |
| INCAS-LT Integrated network cost analysis - local and toll |
| INCAS-S Integrated network cost analysis - shared |
| INCAS/E Integrated network cost analysis system |
| INCAS/I Integrated network cost analysis system - embedded |
| INCIS Integrated network cost information system |
| INCP Incomplete |
| IND Individual |
| INF Information |
| INF Information (SS7: in ISUP) |
| INIT Allocation table initalization |
| INL Inter node link |
| INN Inter node network |
| INQ Complete circuit inquiry |
| INR Information request (SS7: in ISUP) |
| INS (japan) information network system (b64+b16+d8) |
| INT Interrupt (i.e. C/I channel code) |
| INTCCTRL International code control (NTI) |
| INTCHG Interexchange |
| INTEGRIS Integrated results information service |
| INTELSAT International telecommunications satellite consortium |
| INTR Interrupt |
| INW INWATS [code 258(8000-8299)] |
| INWATS Inward wide area telecommunications system |
| INWATS Inward wide area telephone service |
| INWBLKD INWATS returned blocked |
| INWBLKD Inward wide area telecommunications service (INWATS) returned |
| blocked |
| INWBUSY INWATS all lines busy |
| INWCCBL INWATS code control blocked |
| INWDBOV INWATS data base overload |
| INWDBTO INWATS data base timeout |
| INWDSBL INWATS direct signaling blocked |
| INWNNPA INWATS nonpurchased NPA |
| INWNNPA INWATS nonpurchased numbering plan area (NPA) |
| INWNOXL INWATS returned no translation |
| INWONPA INWATS invalid ONPA |
| INWONPA INWATS invalid originating numbering plan area (ONPA) |
| INWOVLD INWATS returned overload |
| INWUNEQ INWATS returned unequipped |
| INWVLIN INWATS vacant line number |
| INWVNXX INWATS vacant NXX |
| IO Inward operator |
| IOAU Input/output access unit (univac) |
| IOC Independent operating company |
| IOC Input/output controler (shelf) |
| IOC Integrated optical circuit |
| IOC International overseas center |
| IOCC International overseas completion center |
| IOCP Input/output configuration process |
| IOCS Input/output control system |
| IODB IDCU on-demand B-channel |
| IOI Secondary input/output interface pack(s) |
| IOM ISDN-oriented modular (architecture and interfaces) |
| IOM2 Extended iom |
| IOMI Input/output microprocessor interface |
| IOP Input-output processor |
| IOP Input/output Processor |
| IOP Input/output driver |
| IOP Input/output processor |
| IOS ISDN operational software |
| IOS Input/output supervisor (IBM) |
| IOS Inventory order system |
| IOSF Input/output shelf assignment |
| IOT Inter-office trunk |
| IOT Interoffice test command (SARTS command) |
| IOT Interoffice testing |
| IOTC International originating toll center |
| IP Information provider |
| IP Inprogress |
| IP Intermediate point |
| IP Internet protocol |
| IPABX ISDN pabx |
| IPAC ISDN pc adapter circuit |
| IPACS Interactive planning & control system |
| IPAT ISDN primary access transceiver |
| IPB Sipb |
| IPBC IOM2 PBC (old name for EPIC) |
| IPC Inter-process communication |
| IPC Interprocess communication |
| IPCS IOS process control system |
| IPCS Installation product costing system |
| IPCS Interactive problem control system |
| IPIB Intelligent personal computer interface board |
| IPIDB IDCU peripheral interface data bus |
| IPL Initial program load |
| IPL Interoffice private line signaling |
| IPL Interoffice private line signaling test (SARTS command) |
| IPLAN Integrated planning and analysis system |
| IPLS InterLATA private line services |
| IPM Impulse per minute |
| IPM Impulses per minute |
| IPM Interruptions per minute |
| IPP IOS protocol part |
| IPP Integrated planning process |
| IPPC Interdepartmental project planning committee |
| IPR Installation performance results system |
| IPS Installation performance results |
| IPS Integrated Provisioning System |
| IPS Integrated provisions system |
| IPX Integrated packet exchange |
| IQS Instant request system |
| IR Incoming register |
| IRBR Integrated resource billing report system |
| IRC International record carrier |
| IRIS Industry relations information system |
| IRLF Incoming register link frame |
| IRM Information resource management |
| IRMC Incoming register marker connector |
| IRO Industry relations operations |
| IROR Internal rate of return |
| IRP Integrated revenue planning |
| IRPC ISDN remote power control psb2120 |
| IRR Internal rate of return system |
| IRRS Interactive request and retrieval system |
| IRS Industrial revenue summary |
| IRT IDCU remote digital terminal |
| IRU Integrated recovery utility (sperry) |
| IS Interrupt set |
| IS/SADQ Interstate special access demand quantification |
| ISA Indicate status application |
| ISAC-P ISDN subscriber access controller |
| ISAC-S ISDN subscriber access controller |
| ISAM Indexed sequential access method |
| ISC Intelligent serial controller |
| ISC International switching center |
| ISC Planintercompany services coordination plan |
| ISC/TE Information systems center for technical education |
| ISCAR Information systems costs analysis reports |
| ISCOM SWBT intercompany service coordination (ISC) order monitor |
| ISCP Integrated service control point |
| ISCP/MSAP ISCP/multi-service application platform |
| ISCP/SPOCK ISCP/service provisioning and on-line creation tool kit software |
| ISDN Integrated services digital network |
| ISF Inquire on a single facility |
| ISG Isolated system grounding |
| ISH Complete circuit inquiry short |
| ISI Industry support layout |
| ISIS Interstate settlements information system |
| ISLM Integrated services line module |
| ISLU Integrated services line unit |
| ISLUCC Integrated services line unit common controller |
| ISLUCD Integrated services line unit common data |
| ISLUHLSC Integrated services line unit high level service circuit |
| ISLUMAN Integrated services line unit metallic access network |
| ISLURG Integrated services line unit ringing generator |
| ISM ISDN switching module |
| ISM Interactive synchronous mode |
| ISMP Industry specific measurement plan |
| ISMS Integrated service management system |
| ISMTL Information systems management training |
| ISN Information systems network |
| ISN Integrated systems network |
| ISNET Interim solution network (Kansas city only) |
| ISO Information systems organization |
| ISO International organization for standardization |
| ISOFC ISDN office totals |
| ISOPDB Information systems organization planning data base |
| ISOSS Intercompany service order switching system |
| ISP Intermediate service part |
| ISPBX Integrated systems PBX |
| ISPC International signaling point code (SS7) |
| ISPF Interactive system productivity facility |
| ISPI ISDN packet interface |
| ISRP Information systems rules panel |
| ISS Integrated switching system |
| ISS Issue |
| ISSANRC Interstate special access non-recurring |
| ISSC Interfunction special service coordination |
| ISSCO Intertoll |
| ISSN Integrated special services network |
| ISSN Intergrated specal services network |
| ISSS ISDN supporting system |
| ISTA Interrupt status register |
| ISUP ISDN user part |
| ISUP ISDN user part (SS7: q.76x) |
| ISUP Integrated services user part |
| IT Inactivity test (SS7: in SCCP) |
| IT Intertandem tie trunk INTER/TRA blocal 1-26 |
| ITAC ISDN terminal adaptor circuit |
| ITC Independent telephone company |
| ITC Interdepartmental training center at dallas-texas for |
| ITD Intertoll dial |
| ITEA Interoffice trunks engineering and administration |
| ITF Integrated test facility |
| ITG Intergrated traffic generator |
| ITIMS Integrated transportation information management system |
| ITIMS/IE Itims/information expert |
| ITM Cable pair item number |
| ITNA Improves thrid number acceptance |
| ITNO Item number |
| ITS Institute of telecommunication science |
| ITS Integrated test system |
| ITS Interactive training system |
| ITSE Incoming trunk service evaluation |
| ITSO Incoming trunk service observation |
| ITSTC Information technology steering committee (cen |
| ITT Idle trunk test |
| ITU International telecommunication union |
| ITU International telecommunications union |
| ITVSE Intermediary transport vendor service center |
| ITW Instructional technology workshop |
| IU Network/port interface unit |
| IUP Installed user program (IBM) |
| IVD Integrated voice data |
| IVP Installation verification procedures |
| IVP Installation verification program |
| IVTS International video teleconferencing service |
| IWF Interworking facility (gateway) |
| IWU Interworking unit (gateway) |
| IX Interactive executive |
| IXC Or icinterexchange carrier |
| IXM Interexchange mileage |
| IZ Interzone |
|
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