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Text File | 1990-01-14 | 42KB | 1,312 lines

Received: from nuacc.acns.nwu.edu by delta.eecs.nwu.edu id aa25802; 22 Nov 89 1:24 CST Received: from UMCVMB.BITNET by nuacc.acns.nwu.edu; Wed, 22 Nov 89 01:21 CST Received: by UMCVMB (Mailer R2.04) id 5039; Wed, 22 Nov 89 01:14:37 CST Date: Wed, 22 Nov 89 01:14:16 CST From: Randy Tischler <C488869@umcvmb.bitnet> To: ptownson@eecs.nwu.edu Message-ID: <8911220124.aa25802@delta.eecs.nwu.edu> Resent-Date: Wed, 22 Nov 89 1:29:12 CST Resent-From: ptownson@eecs.nwu.edu Resent-To: telecom@eecs.nwu.edu ==Phrack Inc.== Volume Two, Issue 20, File #11 of 12 Metal Shop Private's -- Acronyms ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3ACC 3A Central Control 5XB COER 5 X-Bar Central Office Equipment Reports system A/D Analog to Digital AAX Automated Attendant eXchange ABATS Automatic Bit Access Test System ABHC Average Busy Hour Calls ABS Alternative Billing Service ABSBH Average Busy Season Busy Hour ACB Annoyance Call Bureau ACC Audio Communications Controller ACCS Automated Calling Card Service ACD Automatic Call Distributor ACDA Automatic Call Disposition Analyzer ACE Automatic Calling Equipment ACF Advanced Communications Functions ACH Attempt per Circuit per Hour ACOF Attendant Control Of Facilities ACP ACtion Point ACSNET Acedemic Computing Services NETwork ACSU Advanced t-1 Channel Service Unit ACTS Automated Coin Toll Service ACU Alarm Control Unit ACU Automatic Calling Unit ADCCP Advanced Data Communications Control Procedure ADCI Automatic Display Call Indicator ADN Abbreviated Dialing Number ADS Advanced Digital System ADS Audio Distribution System ADS Auxilary Data System AFACTS Automatic FACilities Test System AFADS Automatic Force Adjustment Data System AFSK Automatic Frequency Shift Keying AIC Automatic Intercept Center AICC Automatic Intercept Communications Controller AIOD Automatic Identificated Outward Dialing AIS Automatic Intercept System ALBO Automatic Line BuildOut ALFE Analog Line Front End ALGOL ALGOrhythmic computer Language ALI Automatic Location Indentification ALIT Automatic Line Insulation Testing ALRU Automatic Line Record Update ALS Automated List Service AM Administrative Module AM Amplitude Modulation AMA Automatic Message Accounting AMACS AMA Collection System AMARC AMA Recording Center AMASE AMA Standard Entry AMAT AMA Transmitter AMATPS AMA TeleProcessing System AMERITECH AMERican Information TECHnologies AMPS Advanced Mobile Phone Service AN Associated Number ANA Automatic Number Announcement ANC All Number Calling ANI Automatic Number Identification ANIF Automatic Number Identification Failure ANSI American National Standards Institute AOSS Auxilliary Operator Service System AP Attached Processor APC AMARC Protocol Converter APS Automatic Protection Switch AR Alarm Report ARC Audio Response Controller ARIS Audichron Recorded Information System ARS Alternate Route Selection ARSB Automated Repair Service Bureau ARU Audio Response Unit ASCII American Standard Code for Information Interchange ASOC Administrative Service Oversight Center ASPEN Automatic System for Performance Evaluation of the Network AT Access Tandem AT&T American Telephone and Telegraph ATB All Trunks Busy ATC Automatic Transmission Control ATH Abbreviated Trouble History ATI Automatic Test Inhibit ATIS Automatic Transmitter Identification System ATM Automatic Teller Machine ATMS Automated Trunk Measurement System ATP All Tests Pass ATR Alternate Trunk Routing ATRS Automated Trouble Reporting System ATTC Automatic Transmission Test and Control circuit ATTCOM AT&T COMmunications ATTIS AT&T Information System AUDIX AUDio Information eXchange AUTODIN AUTOmatic DIgital Network AUTOSEVCOM AUTOmatic SEcure Voice COMmunications AUTOVON AUTOmatic VOice Network AUXF AUXillary Frame AVD Alternate Voice Data B6ZS Bipolar with 6 Zero Subsitution B911 Basic 911 BAMAF BELLCORE AMA Format BANCS Bell Administrative Network Communications System BAPCO Bellsouth Advertising & Publishing COmpany BCC Blocked Call Cleared BCD Binary Coded Decimal BCD Blocked Call Delayed BCS Batch Change Supplement BDT Billing Data Transmitter BEF Band Elimination Filter BELLCORE BELL COmmunications REsearch BER Bit Error Rate BERT Bit Error Rate Test BETRS Basic Exchange Telecommunications Radio Service BHC Busy Hour Calls BISP Business Information System Program BITNET Because-It's-Time NETwork BL/DS Busy Line/Don't Answer BLF Busy Line Field BLS Business Listing Service BLV Busy Line Verification BNS Billed Number Screening BOC Bell Operating Company BOR Basic Output Report BORSCHT Battery, Overvoltage, Ringing, Supervision, Coding, Hybrid Test ing BOS Business Office Supervisor BOSS Billing and Order Support System BOT Beginning Of Tape BPI Bits Per Inch BPOC Bell Point Of Contact BPS Bits Per Second BPSS Basic Packet-Switching Service BRAT Business Residence Account Tracking system BRCS Business Residence Custom Service BRI Basic Rate Interface BRM Basic Remote Module BS Banded Signaling BSA Basic Serving Arrangements BSBH Busy Season Busy Hour BSC Business Service Center BSCM BiSynchronous Communications Module BSE Basic Service Elements BSF Bell Shock Force BSOC Bell Systems Operating Company BSP Bell System Practice BSRFS Bell System Reference Frequency Standard BST Basic Services Terminal BSTJ Bell System Technical Journal BT Bus Terminator BTAM Basic Telecommunications Access Message BTL Bell Telephone Laboratories BTN Billing Telephone Number BTU British Thermal Unit BVA Billing Validation Application BVC Billing Validation Center BWM Broadcast Warning Message BWT Broadcast Warning TWX BWTS BandWidth Test Set CA CAble CABS Carrier Access Billing System CAC Calling-card Authorization Center CAC Carrier Access Code CAC Circuit Administration Center CAC Customer Administration Center CAD Computer-Aided Dispatch CADV Combined Alternate Data/Voice CAI Call Assembly Index CAIS Colocated Automatic Intercept System CALRS Centralized Automatic Loop Reporting System CAMA Centralized Automatic Message Accounting CAROT Centralized Automatic Reporting On Trunks CAS Circuit Associated Signaling CAS Computerized Autodial System CAT Craft Access Terminal CATLAS Centralized Automatic Trouble Locating and Analysis System CBS CrossBar Switching CBX Computerized Branch eXchange CC Central Control CC Common Control CC Country Code CCC Central Control Complex CCC Computer Control Center CCH Connections per Circuit per Hour CCIR Comite' Consultatif International des Radio Communications CCIS Common Channel Interoffice Signaling CCITT Comite' Consultatif International Telegraphique et Telephonique CCNC Common Channel Network Controller CCNC Computer/Communications Network Center CCR Customer-Controlled Reconfiguration CCS Common Channel Signaling CCS Hundred (C) Call Seconds CCSA Common-Control Switching Arrangement CCT Central Control Terminal CCTAC Computer Communications Trouble Analysis Center CCU COLT Computer Unit CCV Calling Card Validation CDA Call Data Accumulator CDA Coin Detection and Announcement CDAR Customer Dialed Account Recording CDCF Cumulative Discounted Cash Flow CDF Combined Distributing Frame CDI Circle Digit Identification CDO Community Dial Office CDPR Customer Dial Pulse Receiver CDR Call Dial Rerouting CDS Craft Dispatch System CDT Call Data Transmitter CEF Cable Entrance Facility CEI Comparably Efficient Interconnection CEV Controlled Environment Vault CF Coin First CFCA Communications Fraud Control Association CFR Code of Federal Regulations CGN Concentrator Group Number CIC Carrier Identification Code CICS Customer Information Control System CII Call Identity Index CIS Customized Intercept Service CLASS Centralized Local Area Selective Signaling CLASS Custom Local Area Signaling Service CLDN Calling Line Directory Number CLEI Common-Language Equipment Identification CLI Calling Line Ident CLID Calling Line IDentification CLLI Common-Language Location Identification CMAC Centralized Maintenance and Administration Center CMC Construction Maintenance Center CMDF Combined Main Distributing Frame CMDS Centralized Message Data System CMS Call Management System CMS Circuit Maintenance System CMS Communications Management Subsystem CMS Conversational Monitoring System CMT Cellular Mobile Telephone CMU COLT Measurement Unit CN Change Notice CN/A Customer Name/Address 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 CO Central Office COAM Customer Owned And Maintained COC Circuit Order Control COCOT Customer-Owned Coin-Operated Telephone CODCF Central Office Data Connecting Facility CODEC COder-DECoder COE Central Office Equipment COEES COE Engineering System COLT Central Office Line Tester COMSAT COMmunications SATellite CONN CONNector CONTAC Central Office NeTwork ACcess CONUS CONtinental United States CORNET CORperate NETwork COSMIC COmmon Systems Main InterConnection frame system COSMOS COmputerized System for Mainframe OperationS COT Central Office Terminal CP Control Program CPC Cellular Phone Company CPC Circuit Provisioning Center CPD Central Pulse Distributor CPE Customer-Premises Equipment CPH Cost Per Hour CPI Computer Private branch exchange Interface CPM Cost Per Minute CPMP Carrier Performance Measurement Plan CPU Central Processing Unit CRAS Cable Repair Administrative System CRC Customer Record Center CRC Cyclic Redundancy Check CREG Concentrated Range Extension with Gain CRFMP Cable Repair Force Management Plan CRIS Customer Record Information System CRS Centralized Results System CRSAB Centralized Repair Service Answering Bureau CRT Cathode Ray Tube CSA Carrier Serving Area CSACC Customer Service Administration Control Center CSAR Centralized System for Analysis Reporting CSC Cell Site Controller CSDC Circuit Switched Digital Capability CSNET Computer Science NETwork CSO Central Services Organization CSS Computer Sub-System CSU Channel Service Unit CTC Central Test Center CTM Contac Trunk Module CTMS Carrier Transmission Measuring System CTO Call Transfer Outside CTSS Cray Time Sharing System CTT Cartridge Tape Transport CTTC Cartridge Tape Transport Controller CTTN Cable Trunk Ticket Number CU Control Unit CU Customer Unit CU/TK Common Update/EQuipment system CUCRIT Capital Utilization CRITeria CVR Compass Voice Response CWC City-Wide Centrex D/A Digital to Analog DA Directory Assistance DACS Digital Access Cross-connect System DACS Directory Assistance Charging System DAIS Distributed Automatic Intercept System DARC Division Alarm Recording Center DARU Distributed automatic intercept system Audio Response Unit DAS Directory Assistance System DAS Distributor And Scanner DAS-WDT Distributor And Scanner-Watch Dog Timer DASD Direct Access Storage Device DAV Data Above Voice DB Decibel DBA Data Base Administrator DBAC Data Base Administration Center DBAS Data Base Administration System DBM DataBase Manager DBS Duplex Bus Selector DCCS DisContiguous Shared Segments DCE Data Circuit-terminating Equipment DCH D Channel Handler DCL DEC Control Language DCLU Digital Carrier Line Uint DCM Digital Carrier Module DCMS Distributed Call Measurement System DCMU Digital Concentrator Measurement Unit DCP Duplex Central Processor DCPR Detailed Contuing Property Record (PICS/DCPR) DCPSK Differential Coherent Phase-Shift Keying DCS Digital Crosconnect System DCT Digital Carrier Trunk DCTN Defense Commercial Telecommunications Network DCTS Dimension Custom Telephone Service DDC Direct Department Calling DDD Direct Distance Dialing DDN Defense Data Network DDS Digital Data Service DDS Digital Data System DDS Digital Dataphone Service DDX Distributed Data eXchange DEC Digital Equipment Corporation DERP Defective Equipment Replacement Program DES Data Encryption Standard DEW Distant Early Warning (line) DFI Digital Facility Interface DFMS Digital Facility Management System DIC Digital Interface Controller DID Direct Inward Dialing DIF Digital Interface Frame DIM Data In the Middle DIP Dual In-line Package DISA Direct Inward System Access DIU Digital Interface Unit DLC Digital Loop Carrier DLCU Digital Line Carrier Unit DLL Dial Long Lines DLS Digital Link Service DLTU Digital Line/Trunk Unit DLU-PG Digital Line Unit-Pair Gain DM Delta Modulation DMA Direct Memory Access DMI Digital Multiplexed Interface DML Data Manipulation Logic DMS Data Management System DMS Digital Multiplexed System DMU Data Manipulation Unit DN Directory Number DNC Dynamic Network Controller DNHR Dynamic Non Hierarchical Routing DNIC Data Network Identification Code DNR Dialed Number Recorder DNX Dynamic Network X-connect DOC Dynamic Overload Control DOCS Display Operator Console System DOJ Department Of Justice DOM Data On Master group DOTS Digital Office Timing Supply DOV Data Over Voice DP Demarcation Point DP Dial Pulse DPAC Dedicated Plant Assignment Center DPC Destination Point Code DPE Data Path Extender DPN-PH Data Packet Network-Packet Handler DPP Discounted Payback Period DPSK Differential Phased-Shift Keying DR Data Ready DR Data Receive DRMU Digital Remote Measurement Unit DS Digital carrier Span DS Digital Signal DS Direct Signal DSBAM Double-SideBand Amplitude Module DSDC Direct Service Dial Capability DSI Digital Speech Interpolation DSN Digital Signal (level) N DSP Digital Signal Processor DSR Dynamic Service Register DSS Data Station Selector DSU Data Service Unit DSX Digital System X-connect DT Data Transmit DT Di-group Terminal DTAS Digital Test Access System DTC Di-group Terminal Controller DTC Digital Trunk Controller DTE Data Terminal Equipment DTF Dial Tone First DTG Direct Trunk Group DTIF Digital Transmission Interface Frame DTMF Dual Tone Multi Frequency DTU Di-group Terminal Unit DUV Data Under Voice DVX Digital Voice eXchange E&M rEceive & transMit/Ear & Mouth signaling E-COM Electronic Computer Originated Mail E911 Enhanced 911 EADAS Engineering and Administrative Data Acquisition System EADAS/NM EADAS/Network Management EAEO Equal Access End Office EARN European Academic Research Network EAS Extended Announcement System EAS Extended Area Service EASD Equal Access Service Date EBCDIC Extended Binary Coded Decimal Interexchange Code ECAP Electronic Customer Access Program ECC Enter Cable Change ECCS Economic C (hundred) Call Seconds ECF Enhanced Connectivity Facility ECPT Electronic Coin Public Telephone ECS Electronic Crosconnect System EDAC Electromechanical Digital Adapter Circuit EDI Electronic Data Interchange EDP Electronic Data Processing EDSX Electronic Digital Signal X-connect EECT End-to-End Call Trace EEDP Expanded Electronic tandem switching Dialing Plan EEHO Either End Hop Off EEI Equipment-to-Equipment Interface EFRAP Electronic Feeder Route Analysis Program EIA Electronics Industries Assotiation EIS Expanded Inband Signaling EISS Economic Impact Study System EKTS Electronic Key Telephone Sets EML Expected Measured Loss EMS Expanded Memory Specification ENFIA Exchange Network Facility for Interstate Access EO End Office EOE Electronic Order Exchange EOS Extended Operating System EOTT End Office Toll Trunking EPL Electronic switching system Program Language EPROM Erasable Programmable Read-Only Memory EPSCS Enhanced Private Switched Communication Service ER Error Register ERAR Error Return Address Register EREP Environmental Recording Editing and Printing ERL Echo Return Loss ERP Effective Radiated Power ERU Error Return address Update ESAC Electronic Surveillance Assistance Center ESB Emergency Service Bureau ESF Extended SuperFrame ESL Emergency Stand-Alone ESN Electronic Serial Number ESN Electronic Switched Network ESP Enhanced Service Provider ESS Electronic Switching System ESSX Electronic Switching Systen eXchange ETAS Emergency Technical ASsistance ETF Electronic Toll Fraud ETN Electronic Tandem Network ETS Electronic Tandem Switching ETS Electronic Translation System ETSACI Electronic Tandem Switching Adminstration Channel Interface ETSSP ETS Status Panel FA Fuse Alarm FACS Facilities Assignment and Control System FAR Federal Acquisition Regulation FAST First Application System Test FAT File Allocation Table FCAP Facility CAPacity FCC Federal Communications Commission FCC Forward Command Channel FCG False Cross or Ground FCS File Control Systemction FCS Frame Check Sequence FDM Frequency-Division Multiplexing FDP Field Development Program FDX Full DupleX FED Far End Data FEMF Foreign Electro-Motive Force FEPS Facility and Equipment Planning System FEV Far End Voice FGA Feature Group A FGB Feature Group B FGC Feature Group C FGD Feature Group D FIFO First In, First Out FIOC Frame Input/Output Controller FIP Facility Interface Processor FIPS Federal Information Processing Standards FM Frequency Modulation FMAC Facility Maintenance And Control FNPA Foreign Numbering Plan Area FOC Fiber Optic Communications FON Fiber Optics Network FR Flat Rate FRS Flexible Route Selection FSK Frequency Shift Keying FTG Final Trunk Group FTP File Transfer Protocol FTS Federal Telecommunications System FX Foreign eXchange GBS Group Bridging Service GCS Group Control System GEISCO General Electric Information Services COmpany GHZ GigaHertZ GID Group ID GND GrouND GOS Grade Of Service GP Group Processor GPIB General Purpose Interface Bus GRD GRounD GRP MOD GRouP MODulator GSA General Services Administration GSAT General telephone and electronics SATellite corporation GTC General Telephone Company GTE General Telephone Electronics GTT Global Title Transmission HCSDS High-Capacity Satellite Digital Service HCTDS High-Capacity Terrestrial Digital Service HDLC High-level Data Link Control HDTV High Definition TV HDX Half DupleX HEAP Home Energy Assistance Program HEHO High End Hop Off HIC Hybrid Integrated Circuit HNPA Home Numbering Plan Area HNS Hospitality Network Service HOBIC HOtel Billing Information Center HOBIS HOtel Billing Information System HP Hewlett-Packard HPO High Performance Option HSSDS High-Speed Switched Digital Service HU High Usage HUTG High Usage Trunk Group HZ HertZ I&M Installation & Maintenance I/O Input/Output IB Instruction Buffer IBN Integrated Business Network IC Independent Carrier IC Inter-exchange Carrier IC Inter-LATA Carrier ICAN Individual Circuit ANalysis ICC Interstate Commerce Commission ICD Interactive Call Distribution ICLID Individual Calling Line ID ICM Integrated Call Management ICSC Inter-LATA Customer Service Center IDDD International Direct Distance Dialing IDF Intermediate Distributing Frame IDS Internal Directory System IDVC Integrated Data/Voice Channel IEEE Institute of Electrical and Electronics Engineers IF Intermediate Frequency IFRPS Intercity Facility Relief Planning System IIN Integrated Information Network IM Interface Module IMAS Integrated Mass Announcement System IMM Input Message Manual IMT Inter-Machine Trunk IMTS Improved Mobile Telephone Service IN Intelligent Network INC InterNational Carrier INL Inter Node Link INN Inter Node Network INTELSAT INternational TELecommunications SATellite consortium INWATS INward Wide Area Telephone Service IO Inward Operator IOC Input/Output Controller IOCC International Overseas Completion Center IOP Input-Output Processor IOT Inter-Office Trunk IP Information Provider IPCS Interactive Problem Control System IPL Initial Program Load IPLAN Integrated PLanning And Analysis IPM Impulses Per Minute IPM Interruptions Per Minute IPX Integrated Packet eXchange IRC International Record Carrier IROR Internal Rate Of Return IS Interrupt Set ISC International Switching Center ISDN Integrated Service Digital Network ISLM Integrated Services Line Module ISLU Integrated Services Line Unit ISN Information Systems Network ISN Integrated Systems Network ISO International Organization for Standardization ISS Integrated Switching System ISSN Integrated Special Services Network ISUP Integrated Services User Part ITS Institute of Telecommunication Science ITSO Incoming Trunk Service Observation ITU International Telecommunications Union IVP Installation Verification Program IVTS International Video Teleconferencing Service IX Interactive eXecutive IXM IntereXchange Mileage JCL Job Control Language JES Job Entry System JIM Job Information Memorandum JMX Jumbogroup MultipleX JSN Junction Switch Number JSW Junctor SWitch K Kilobit KBPS KiloBits Per Second KDT Keyboard Display Terminal KFT KiloFeeT KHZ KiloHertZ KP Key Pulse KSR Keyboard Send-Receive KTS Key Telephone Set KTS Key Telephone System LAC Loop Assignment Center LADT Local Access Data Transport LAIS Local Automatic Intercept System LAMA Local Automatic Message Accounting LAN Local Area Network LAP Link Access Protocol LAPD Link Access Procedure on the D channel LASS Local Area Signaling Service LATA Local Access and Transport Area LATIS Loop Activity Tracking Information System LBO Line Buildout LBS Load Balance System LCAMOS Loop CAble Maintenance Operation System LCCIS Local Common Channel Interoffice Signaling LCCL Line Card CabLe LCCLN Line Card Cable Narrative LCDN Last Called Directory Number LCIE Lightguide Cable Interconnection Equipment LCLOC Line Card LOCation LCN Logical Channel Numbers LCR Least Cost Routing LCRMKR Line Card ReMarKs, Retained LCSE Line Card Service and Equipment LCSEN Line Card Service and Equipment Narrative LDMTS Long Distance Message Telecommunications Service LEAS LATA Equal Access System LEC Local Exchange Carrier LED Light-Emitting Diode LENCL Line Equipment Number CLass LF Line Finder LFACS Loop Facilties Assignment And Control System LIFO Last In, First Out LLN Line Link Network LMMS Local Message Metering System LMOS Loop Maintenace Operations System LOC Local Operating Company LOCAP LOw CAPacitance LOF Lock OFf-line LON Lock ON-line LPCDF Low Profile Combined Distributing Frame LRAP Long Route Analysis Program LRC Longitudal Redundancy Check LRS Line Repeater Station LRSS Long Range Switching Studies LSB Lower Side Band LSI Large-Scale Integrated circuitry LSRP Local Switching Replacement Planning system LSS Loop Switching System LSV Line Status Verifier LTAB Line Test Access Bus LTC Local Test Cabinet LTD Local Test Desk LTF Lightwave Terminating Frame LTF Line Trunk Frame LTG Line Trunk Group LTS Loss Test Set LXE Lightguide eXpress Entry M/W MicroWave MA Maintenance Administrator MACBS Multi-Access Cable Billing System MADN Multiple Access Directory Numbers MAN Metropolitan Area Network MAP Maintenance and Administration Position MAPSS Maintenance & Analysis Plan for Special Services MAR Microprogram Address Register MARC Market Analysis of Revenue and Customers system MAS MAin Store MAS Mass Announcement System MASB MAS Bus MASC MAS Controller MASM MAS Memory MATFAP Metropolitan Area Transmission Facility Analysys Program MBPS MegaBits Per Second MCIAS Multi-Channel Intelligent Announcement System MCC Master Control Center MCCS Mechanized Calling Card Service MCH Maintenance CHannel MCHB Maintenance CHannel Buffer MCI Microwave Communications Incorporated MCIAS Multi-Channel Intercept Announcement System MCN Metropolitan Campus Network MCS Meeting Communications Service MCTRAP Mechanized Customer Trouble Report Analysis Plan MDACS Modular Digital Access Control System MDC Marker Distributor Control MDC Meridian Digital Centrex MDF Main Distribution Frame MDU Marker Decoder Unit MDX Modular Digital eXchange MEC Mobile Equipment Console MELD Mechanized Engineering and Layout for Distributing frames MERS Most Economic Route Selection MET Multibutton Electronic Telephone MF Multi Frequency MFENET Magnetic Fusion Energy NETwork MFJ Modification of Final Judgement MFR Multi-Frequency Receivers MFT Metallic Facility Terminal MG MasterGroup MGT MasterGroup Translator MHS Message Handling System MHZ MegaHertZ MICE Modular Integrated Communications Environment MIN Mobile Identification Number MINX Multimedia Information Network eXchange MIR Micro-Instruction Register MIS Management Information System MISCF MISCellaneous Frame MITS Microcomputer Interactive Test System MLC MiniLine Card MLCD Multi-Line Call Detail MLT Mechanized Loop Testing MMC Minicomputer Maintenance Center MMGT MultiMasterGroup Translator MMOC Minicomputer Maintenance Operations Center MMS Main Memory Status MMS Memory Management System MMX Mastergroup MultipleX MODEM MOdulator-DEModulator MOG Minicomputer Operations Group MOS Metal Oxide Semiconductor MP Multi-Processor MPCH Main Parallel CHannel MPOW Multiple Purpose Operator Workstation MPPD Multi-Purpose Peripheral Device MRF Maintenance Reset Function MS Maintenance State MSC Media Stimulated Calling MTF Master Test Frame, MTP Message Transfer Part MTR Mechanized Time Reporting MTS Message Telecommunications Service MTS Message Telephone Service MTS Mobile Telephone Service MTSO Mobile Telephone Switching Office MTU Maintenance Termination Unit MTU Media Tech Unit MTX Mobile Telephone eXchange MU Message Unit MULDEM MULtiplexer-DEMultiplexer MUX MUltipleX MVP Multiline Variety Package MVS Multiple Virtual Storage MW MultiWink MXU MultipleXer Unit NA Next Address NAC Network Administration Center NAG Network Architecture Group NAM Number Assignment Module NAND Not-AND gate NAS Numerical and Atmospheric Sciences network NCC Network Control Center NCCF Network Communications Control Facility NCP Network Control Point NCS National Communications System NCTE Network Channel-Terminating Equipment NDCC Network Data Collection Center NEBS New Equipment-Building System NESAC National Electronic Switching Assistance Center NEXT Near-End X-Talk NHR Non Hierarchial Routing NI Network Interface NM Network Module NMC Network Management Center NNX Network Numbering eXchange NOC Network Operations Center NOCS Network Operations Center System NORGEN Network Operations Report GENerator NOTIS Network Operator Trouble Information System NPA No Power Alarm NPA Numbering Plan Area NPV Net Present Value NSA National Security Agency NSC Network Service Center NSCS Network Service Center System NSEC Network Switching Engineering Center NSFNET National Science Foundation NETwork NSPMP Network Switching Performance Measurement Plan NT Network Termination NT Northern Telecom NTEC Network Technical Equipment Center NTIA National Telecommunications and Information Agency NTS Network Technical Support NTS Network Test System NUA Network User Address NUI Network User Identification NYNEX New York, New England and the unknown (X) O-LTM Optical Line Terminating Multiplexer OASYS Office Automation SYStem OC Operator Centralization OCC Other Common Carrier OCE Other Common carrier channel Equipment OCU Office Channel Unit ODAC Operations Distribution Administration Center ODD Operator Distance Dialing ODDD Operator Direct Distance Dialing ODS Overhead Data Stream OFNPS Outstate Facility Network Planning System OGT OutGoing Trunk OMM Output Message Manual OMPF Operation and Maintenance Processor Frame ONAC Operations Network Administration Center ONAL Off Network Access Line ONI Operator Number Identification OP Outside Plant OPC Originating Point Codes OPEOS Outside Plant planning, Engineering & construction Operations Sys tem OPM Outside Plant Module OPS Off-Premises Station OPSM Outside Plant Subscriber Module OPX Off-Premises eXtension OR Originating Register ORB Office Repeater Bay ORM Optical Remote Module OS Operator Service OS OutState OSAC Operator Services Assistance Center OSC Operator Services Center OSC OSCillator OSDS Operating System for Distributed Switching OSI Open Systems Interconnection OSO Originating Signaling Office OSP OutSide Plant OSPS Operator Service Position System OSS Operator Service System OUTWATS OUTward Wide Area Telecommunications Service OW Over-Write P/AR Peak-to-Average Ratio PA Power Allarm PA Program Address PABX Private Automatic Branch eXchange PACE Program for Arrangement of Cables and Equipment PACT Prefix Access Code Translator PAD Packet Assembly/Disassembly PAM Pulse-Ampitude Modulation PAN Personal Account Number PANS Pretty Advanced New Stuff PAS Public Announcement Service PAT Power Alarm Test PAX Private Automatic eXchange PBC Peripheral Bus Computer PBC Processor Bus Controller PBD Pacific Bell Directory PBX Private Branch eXchange PC Primary Center PCDA Program Controlled Data Acquisition PCH Parallel CHannel PCM Pulse-Code Modulation PCO Peg Count and Overflow PCTV Program Controlled TransVerters PD Peripheral Decoder PDF Power Distribution Frame PDI Power and Data Interface PDN Public Data Network PDSP Peripheral Data Storage Processor PE Peripheral Equipment PECC Product Engineering Control Center PFPU Processor Frame Power Unit PH Parity High bit PIA Plug-In Administrator PIC Plastic-Insulated Cable PIC Primary Independent Carrier PICS Plug-in Inventory Control System (PICS/DCPR) PIN Personal Identification Number PIP Packet Interface Port PL Parity Low bit PM Peripheral Module PM Plant Management PMAC Peripheral Module Access Controller PMU Precision Measurement Unit PNB Pacific Northwest Bell PNPN Positive-Negative-Positive-Negative devices POB Periphal Order Buffer POF Programmable Operator Facility POP Point Of Presence POTS Plain Old Telephone Service PP Post Pay PPD Peripheral Pulse Distributor PPN Public Packet Switching PPS Product Performance Surveys PPS Public Packet Switching network PRCA Puerto Rico Communications Authority PREMIS PREMises Information System PRI Primary Rate Interface PROM Programmable Read-Only Memory PROMATS PROgrammable Magnetic Tape System PROTEL PRocedure Oriented Type Enforcing Language PRS Personal Response System PRTC Puerto Rico Telephone Company PS Program Store PSAP Public Safety Answering Point PSC Prime Service Contractor PSC Public Safety Calling system PSC Public Service Commission PSDC Public Switched Digital Capability PSE Packet Switch Exchange PSIU Packet Switch Interface Unit PSK Phase-Shift Keying PSM Packet Service Module PSM Position Switching Module PSN Packet Switched Network PSN Public Switched Network PSO Pending Service Order PSS Packet Switch Stream PSS Packet Switched Services PSTN Public Switched Telephone Network PSU Program Storage Unit PSW Program Status Word PT Program Timer PTAT Private Trans Atlantic Telecommunications PTT Postal Telephone and Telegraph PTW Primary Translation Word PUC Peripheral Unit Controller PUC Public Utilities Commission PVC Permanent Virtual Circuits PVN Private Virtual Network QAM Quadrature-Amplitude Modulation QAS Quasi-Associated Signaling QMP Quality Measurement Plan QRSS Quasi Random Signal Source QSS Quality Surveillance System R Ring R&R Rate & Route R&SE Research & Systems Engineering R/O Read/Only R/W Read Write R/WM Read/Write Memory RAM Random-Access Memory RAND Rural Area Network Design RAO Regional Accounting Office RAO Revenue Accounting Office RAR Return Address Register RASC Residence Account Service Center RBHC Regional Bell Holding Company RBOC Regional Bell Operating Company RBOR Request Basic Output Report RC Regional Center RC Resistance-Capacitance RC MAC Recent Change Memory Administration Center RCC Radio Common Carrier RCC Remote Cluster Controller RCC Reverse Command Channel RCF Remote Call Forwarding RCLDN Retrieval of Calling Line Directory Number RCM Remote Carrier Module RCSC Remote Spooling Communications Subsystem RCU Radio Channel Unit RCVR ReCeiVeR RDES Remote Data Entry System RDS Radio Digital System RDT Radio Digital Terminal REC Regional Engineering Center REM Remote Equipment Module REMOBS REMote OBservation System REN Ring Equivalence Number REXX REstructred eXtended eXecuter language RF Radio Frequency RID Remote Isolation Device RISLU Remote Integrated Services Line Unit RLCM Remote Line Concentrating Module RLT Remote Line Test RMAS Remote Memory Administration System RMR Remote Message Registers RMS Root-Mean-Square RN Reference Noise RNOC Regional Network Operations Center RO Receive Only ROB Remote Order Buffer ROC Regional Operating Company ROH Receiver Off Hook ROM Read-Only Memory ROTL Remote Office Test Line RQS Rate/Quote System RQSM Regional Quality Service Management RRO Reports Receiving Office RSA Repair Service Attendant RSB Repair Service Bureau RSC Remote Switching Center RSC Residence Service Center RSCS Remote Source Control System RSCS Remote Spooling Communications Subsystem RSLE Remote Subscriber Line Equipment RSLM Remote Subscriber Line Module RSM Remote Switching Module RSS Remote Switching System RSTS/E Resource System Time Sharing/Enhanced RSU Remote Switching Unit RTA Remote Trunking Arrangement RTL Resistor-Transistor Logic RTM Regional Telecommunications Management RTM Remote Test Module RTS Remote Testing System RTU Remote Trunking Unit RTU Right To Use RUM Remote User Multiplex RWC Remote Work Center RX Remote eXchange S Sleeve SAC Service Area Code SAC Service Area Computer SAC Special Area Code SAG Street Address Guide SAI Serving Area Interface SALI Standalone Automatic Location Identification SAMA Step by step Automatic Message Accounting SAR Store Address Register SARTS Switched Access Remote Test System SAT Special Access Termination SAT Supervisory Audio Tone SBMS Southwestern Bell Mobile Service SBS Skyline Business Systems SC Scanner Controller SC Sectional Center SCAT Stromberg-Carlson Assistance Team SCC Specialized Common Carrier SCC Switching Control Center SCCS Specialized Common Carrier Service SCCS Switching Control Center System SCF Selective Call Forwarding SCM Subscriber Carrier Module SCO Serving Central Office SCOT Stepper Central Office Tester SCOTS Surveillance & Control Of Transmissions System SCP Signal Control Point SCP Signal Conversion Point SCP System Control Program SCPC Signal Channel Per Carrier SCPD Supplementary Central Pulse Distributor SCU Selector Control Unit SCX Specialized Communications eXchange SD&D Specific Development & Design SDIS Switched Digital Integrated Service SDL Specification and Description Language SDLC Synchronous Data Link Control SDN Software-Defined Network SDOC Selective Dynamic Overload Controls SDP Service Delivery Point SDR Store Data Register SDS Switched Data Service SDS Synchronous Data Set SDSC Synchronous Data Set Controller SEAS Signaling Engineering and Administration System SEL SELector SES Service Evaluation System SF Single Frequency SFMC Satellite Facility Management Center SG SuperGroup SGML Standard Generic Markup Language SGMP Simple Gateway Management Protocol SI Status Indicator SIC Silicon Integrated Circuit SID System IDentification SIT Special Information Tone SLC Subscriber Loop Carrier SLE Screening Line Editor SLIC Subscriber Line Interface Circuit SLIM Subscriber Line Interface Module SM Switching Module SMAS Supplementary MAin Store SMAS Switched Maintenance Access System SMASF SMAS Frame SMASPU SMAS Power Unit SMDF Subscriber Main Distributing Frame SMDI Subscriber Message Desk Interface SMDR Station Message Detailed Recording SMG SuperMasterGroup SMS Service Management System SMSA Standard Metropolitan Statistical Area SMTP Simple Mail Transfer Protocol SNA System Network Architecture SNADS System Network Architecture Distribution Service SNET Southern New England Telephone SOAC Service Order Analysis Control SOC Service Oversight Center SOH Service Order History SONAR Service Order Negotiation And Retrieval SONDS Small Office Network Data System SP Signal Processor SP Signaling Point SPAN Space Physics Analysis Network SPAN System Performance ANalyzer SPC Southern Pacific Communications SPC Stored Program Control SPCS Stored Program Control Systems SPI Serial Peripheral Interface SPUC/DL Serial Peripheral Unit Controller/Data Link SQL/DS Structured Query Language/Data System SRA Selective Routing Arrangement SS Special Services SSAS Station Signaling and Announcement Subsystem SSB Single-SideBand SSBAM Single-SideBand Amplitude Modulation SSC Special Services Center SSCP Subsystem Services Control Point SSO Satellite Switching Office SSP Signal Switching Point SSP Sponsor Selective Pricing SSP System Status Panel SSPC SSP Controller SSPRU SSP Relay Unit SSTTSS Space-Space-Time-Time-Space-Space network ST STart STC Serving Test Center STC Switching Technical Center STD Subscriber Trunk Dialing STDM Statistical Time Division Multiplexing STP Signal Transfer Point STS Shared Tenant Service STS Space-Time-Space network SVC Switched Virtual Circuits SVS Switched Voice Service SWB SouthWestern Bell SX SimpleX signaling SXS Step by (X) Step SYC SYstem Control SYSGEN SYStem GENeration T Tip T1/OS T1 carrier OutState T1FE T1 carrier Front End TA Terminal Adaptor TA Transfer Allowed TAC Terminal Access Circuit TAP Telephone Assistance Plan TAS Telephone Answering Service TASC Technical Assistance Service Center TASC Telecommunications Alarm Surveillance and Control system TASI Time Assignment Speech Interpolation system TAT TransAtlantic Telephone TC Timing Counter TC Toll Center TCAP Transaction Capabilities Applications Port TCAS T-Carrier Administration System TCC Trunk Class Code TCG Test Call Generation TCM Time Compression Multiplexer TCM Trellis Coded Modulation TCR Transient Call Record TDAS Traffic Data Administration System TDC Tape Data Controller TDC Terrestrial Data Circuit TDD Telecommunications Device for Deaf TDM Time Division Multiplexing TE Terminal Equipment TE Transverse Electric TEHO Tail End Hop Off TELSAM TELephone Service Attitude Measurement TERM TERMinal TFLAP T-carrier Fault-Locating Applications Program TFS Trunk Forecasting System TGC Terminal Group Controller TGN Trunk Group Number TH Trouble History TIA Telephone Information Access TIRKS Trunk Integrated Record Keeping System TLM Trouble Locating Manual TLN Trunk Line Network TLP Transmission Level Point TLTP Trunk Line and Test Panel TM Transverse Magnetic TMDF Trunk Main Distributing Frame TMMS Telephone Message Management System TMR Transient Memory Record TMRS Traffic Measurement and Recording System TMRS Traffic Metering Remote System TMS Time-Multiplexed Switch TN Telephone Number TN Transaction Number TNDS Total Network Data System TNN Trunk Network Number TNOP Total Network Operation Plan TNPC Traffic Network Planning Center TOPS Timesharing OPerating System TOPS Traffic Operator Position System TP Toll Point TPMP Total network data system Performance Measurement Plan TR Test Register TR Transfer Register TREAT Trouble Report Evaluation Analysis Tool TRMTR TRamsMiTteR TRR Tip-Ring Reverse TSCPF Time Switch and Call Processor Frame TSCPF Time Switch and Central Processor Frame TSI Time Slot Interchanger TSO Time Sharing Option TSORT Transmission System Optimum Relief Tool TSP Test SuPervisor TSP Traffic Service Position TSPS Traffic Service Position System TSS Trunk Servicing System TSST Time-Space-Space-Time network TST Time-Space-Time network TST Traveling-Wave Tube TSTS Time-Space-Time-Space network TT Trunk Type TTC Terminating Toll Center TTL Transistor-Transistor Logic TTP Trunk Test Panel TTS Trunk Time Switch TTTN Tandem Tie Trunk Network TTY TeleTYpewriter TTYC TTY Controller TUR Traffic Usage Recording TUR Trunk Utilization Report TWX TeletypeWriter eXchange UCD Uniform Call Distribution UIC User Identification Code UID User ID UITP Universal Information Transport Plan UNISTAR UNIversal Single call Telecommunications Answering & Repair USB Upper Side Band USITA United States Independent Telephone Association USO Universal Service Order USOC Universal Service Order Code USP Universal Sampling Plan UUCICO Unix to Unix Copy Incoming Copy Outgoing UUCP Unix to Unix Copy Program VAN Value Added Network VC Virtual Circuit VCS Virtual Circuit System VF Voice Frequency VFY VeriFY VGF Voice Grade Facility VHF Very High Frequency VINES VIrtual NEtwork Software VIU Voiceband Interface Unit VLSI Very Large-Scale Integrated circuitry VM/SP Virtual Machine/System Product VMCF Virtual Machine Communications Facility VMR Volt-Meter Reverse VMRS Voice Message Relay System VMS Virtual Memory operating System VMS Voice Mail System VMS Voice Management System VNF Virtual Network Feature VNL Via Net Loss plan VNLF Via Net Loss Factor VODAS Voice Over Data Access Station VPN Virtual Private Network VRS Voice Response System VSAM Virtual Storage Access Method VSAT Very Small Aperature Terminal VSB Vestigial SideBand modulation VSE Virtual Storage Extended VSR Voice Storage and Retrieval VSS Voice Storage System VSSP Voice Switch Signaling Point VTAM Virtual Telecommunications Access Method VTI Virtual Terminal Interface VTOC Volume Table Of Contents VTS Video Teleconferencing System WAN Wide Area Network WATS Wide Area Telephone Service WC Wire Center WCPC Wire Center Planning Center WDT Watch Dog Timer WM Work Manager XB X-Bar XBAR X-BAR XBT X-Bar Tandem XFE X-Front End XMS eXtended Multiprocessor operating System ^*^