1017 lines
43 KiB
Plaintext
1017 lines
43 KiB
Plaintext
From telecom@eecs.nwu.edu Sun Jan 27 14:40:06 1991
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Received: from hub.eecs.nwu.edu by gaak.LCS.MIT.EDU via TCP with SMTP
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id AA27988; Sun, 27 Jan 91 14:39:59 EST
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Resent-Message-Id: <9101271939.AA27988@gaak.LCS.MIT.EDU>
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Received: from labrea.Stanford.EDU by delta.eecs.nwu.edu id aa18840;
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27 Jan 91 6:29 CST
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Received: by labrea.stanford.edu; Sun, 27 Jan 91 04:17:17 PST
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Date: Sun, 27 Jan 91 04:17:17 PST
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From: cdp!anlyyao@labrea.stanford.edu
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Message-Id: <9101271217.AA10499@labrea.stanford.edu>
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To: telecom@eecs.nwu.edu
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Subject: comp.dcom.tele: Abbrevations for ISDN & Telecom
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Resent-Date: Sun, 27 Jan 91 13:41:16 CST
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Resent-From: telecom@eecs.nwu.edu
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Resent-To: ptownson@gaak.LCS.MIT.EDU
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Status: R
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------------------------------------------------------------------------------
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Abbrevations for ISDN and Data Communications
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1991/01/28, Goetz Kluge Seoul
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cdp!anlyyao@labrea.stanford.edu
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------------------------------------------------------------------------------
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This list has been compiled during my work for a German semiconductor maker
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at its Seoul branch. So you also will find some abbrevations related to that
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products of that company. But the larger part of this collection is not rela-
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ted to my employer. - During my work I got quite fed up with those many abbre-
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vations which quite often are not explained in the literature. So allways when
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one of these crossed my way, I filed it in this file. There might be some mis-
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takes: (a) Sometimes I could not verify which of different explanaitions given
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for an abbrevation was the right one. (b) I am Gerrrrman, so is my English.
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------------------------------------------------------------------------------
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1TR6 (Ger) FTZ regulation (close to CCITT Q.930/931)
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2B1Q 2 binary data, 1 quarternary redundance
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3PTY Three Party Service (I.254 B)
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4B3T 4 binary data, 3 ternary redundance (MMS43)
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5B6B 5 binary data, 6 binary redundance (code for OFT lines)
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a/b two wire phone connection (T&R)
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ABM Asynchronous Balanced Mode ( -> SABME)
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ABME ABM extended
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ACA Asynchronous Communication Adapter
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ACD Automatic Call Distribution
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ACFA Advanced CMOS Frame Aligner PEB2030
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ACI Answer Controller Interface (IOM2 Monitor Command)
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ACIA Asynchronous Communications Interface Adapter
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ACK Acknowledge
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ACM Address Complete Msg. (SS7: in ISUP)
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ACSE Association Control Service Element
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ACU Automatic Calling Unit
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ADC American Digital Cellular
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ADC Analog to Digital Converter
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ADCCP Advanced Data Communication Controll Procedure
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ADMA Advanced DMA Controller SAB82258
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ADPCM Adaptive PCM
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AERM Alignment Error Rate Monitor
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AFE Analog Front End
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AFI Authority and Format Identifier (ISO 7498)
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AGND Analog Ground
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AI Activate Indication (C/I channel code)
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AI Artificial Intelligence
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AIS Alarm Indication Signal
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AIU AI Upstream
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ALE Adress Latch Enable
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AM Amplitude Modulation
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AMC Add-on Module Connector (-> SIPB)
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AMI Alternate Mark Inversion Code
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ANM Answer Msg. (SS7: in ISUP)
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ANS Answer Msg.
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ANSI American National Standards Institute
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AOC Advice of Charge (I.256 B)
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AP Application (OSI Layer 7)
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APD Avalanche Photo Diode
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API Application Interface
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APPC Advanced Program to Program Communication (IBM)
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AR Activation Request (C/I channel code)
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ARCOFI Audio Ringing Codec Filter PSB2160
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ARCOFI-SP ARCOFI + speakerphone function PSB2165
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ARCOS ARCOFI Coefficient Support Program
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ARCOTI SIPB Telephone Module
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ARD AR Downstream
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ARL Activation Request Local loop (C/I channel code)
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ARM Activation Request Maintenance (C/I channel code)
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ARM Asynchronous Response Mode
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ARN Activation Request
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ARQ Automatic Repeat Request
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ARU Activation Request Upstream
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ASCC2 Advanced Serial Communication Controller SAB825??
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ASCII American Ntl. Standard Code for Information Interchange
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ASE Application Service Element
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ASIC Application Specific Integrated Circuit
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ASM Analog Subscriber Module
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ASP ARCOFI Signal Processor
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AT&T American Telephone & Telegraph
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ATD Async. TDM
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ATI Awake TI
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ATM Analog Trunk Module
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ATM Asynchronous Transfer Mode
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AU Access Unit
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AUP Access Unit Port
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AW (Ger) termination resistor
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AWI Awake Indication
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B8ZS Bipolar with 8 Zeros Substitution (T1 PRI)
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BA Basic Access
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BAKT (Ger) Basic Access Concentrator
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BAMX (Ger) Basic Access MUX
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BAS Basic Activity Subset (T.62, BAS of OSI session layer)
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BBD0/1 Binary 0s or 1s detected in B and D channels
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BCC Block Check Character
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BCCP Bearer CCP
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BDS Basic Data Service
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BEL Bell
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BER Bit Error Rate
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BHC Busy Hour Call
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BIB Backward Indicator Bit (SS7)
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BICU Bus Interface Control Unit
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BIFIFO Bidirectional FIFO
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BIR Bit Receiver
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BIR Bus Interface Register
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BISDN Broadband ISDN
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BISYNC Binary Synchronous Communications
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BIT Bit Transmitter
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BITR Bit Transceiver
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BLA Blocking Acknowledgement (SS7: in ISUP)
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BLO Blocking (SS7: in ISUP)
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BMU Basic Measurement Unit (DIP)
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BOC Bell Operating Companies
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BORSCHT Battery, Overvoltage, Ringing, Supervision, Coding, Hybrid, Testing
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BOP Byte Oriented Protocol
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BOS Bit Oriented Signaling
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BPSK Binary PSK
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BR Bit Robbing (CAS-BR)
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BRG Baud Rate Generator
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BS Backspace
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BSI British Standards Institution
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BSN Backward Sequence Number (SS7)
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BT British Telecom
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BVS Basic Voice Service
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C/I Command/Indicate
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CA Collision Avoidance (->CSMA/)
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CAM Communication Access Method
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CAM Computer Aided Manufacturing
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CAM Content Adressable Memory
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CAM Control Administration Module
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CAN Cancel
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CANC Cancel (I.451)
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CAS Cannel Associated Signaling
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CBA Change Back Acknowledgement (SS7: in MTP)
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CBD Change Back Declaration (SS7: in MTP)
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CBEMA Computer and Business Equipment Manufacturers' Assc.
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CC Common Channel (CAS-CC)
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CC Connection Confirm
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CC Country Code (ISO 7498)
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CC1 Call Control 1 (IOS)
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CCA Computer Content Architecture (ISO 8637/2)
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CCBS Completion of Call to Busy Subscribers (I.253 C)
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CCIR Consultative Committee for Radiocomunication
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(International Radio Consultative Committee)
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CCIS #7 Common Channel Interoffice Signaling (Japan, SS #7 Subset)
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CCITT Consultative Committee for Internat. Telephone and Telegraph
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CCNC CCS Network Control
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CCP Call Control Part
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CCR Clock Configuration Register
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CCR Continuity Check Request (SS7: in ISUP)
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CCRC Corrupt CRC (IOM2 Monitor Command)
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CCS Common Channel Signaling
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CCU Communication Control Unit
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CD Call Deflection (I.252 E)
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CD Collision Detection (->CSMA/)
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CDI Connected Line Identification (I.251 C/E)
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CDMA Code Division MA
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CDR Collision Detect input line
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CE Conducted Emission (EME)
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CE Collision Elimination (->CSMA/)
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CEI Comparable Efficient Interconnection
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CEN European Committee of Standards
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CENELEC European Committee of Standards (Electrotechnics)
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CEP Connection Endpoint
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CEPT European Conference of Post/Telecom Administrations
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CFI Configurable Interface (SIPB)
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CFNR Call Forwarding No Reply (I.252 C)
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CFP Call Forwarding Busy (I.252 B)
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CFU Call Forwarding Unconditional (I.252 D)
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CGB Circuit Group Blocking (SS7: in ISUP)
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CGBA CGB Acknowledgement
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CGM Computer Graphics Metafile (ISO DIS 8632)
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CGU Circuit Group Unblocking (SS7: in ISUP)
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CGUA CGU Acknowledgement
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CIF Common Intermediate Format (for ISDN high end video)
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CIC Circuit Identification Code
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CID Connection Identification
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CIP Control Interface Port
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CIP Control Interface Port
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CIRR C/I Receive Register
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CIXR C/I Transmit Register
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CK Checkbits
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CKS Clock select bit
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CLIP Calling Line Identification Presentation (I.251 C)
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CLIR Calling Line Identification Restriction (I.251 D)
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CLK Clock
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CLS Connectless-Mode Service
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CLT Communications Line Terminal
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CM Connection Memory
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CMC Call Modification Completed (SS7: in ISUP)
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CMR Call Modification Request (SS7: in ISUP)
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CMRJ CMR reject (SS7: in ISUP)
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CN Connection
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CO Central Office
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COA Change Over Acknowledgement (SS7: in MTP)
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COO Change Over Order (SS7: in MTP)
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CODEC Coder/Decoder
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COLP Connected Line Identification Presentation (I.251 E)
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COLR Connected Line Identification Restriction (I.251 F)
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COM/EXP PCM-Compander/Expander
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CONF Conference Calling (I.254 A)
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CONN Connect Msg. (I.451)
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COP Call Offering Procedure
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CORC Commands and Responses Definition and Compressing Program (IOS)
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CorNet Corporate Network Protocol (ECMA and CCITT Q.930/931 oriented)
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D-channel layer 3 protocol for private IPABX
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COS Connection-Mode Service
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COT Central Office Terminal (opposite to RT)
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COT Continuity (SS7: in ISUP)
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CPD Common Packet Data Channels
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CPE Customer Premises Equipment
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CPG Call Progress (SS7: in ISUP)
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CPU Central Processing Unit SAB80188-2
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SAB80C166
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SAB80C5xx
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CQM Circuit Group Query (SS7: in ISUP)
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CQR CQM Response
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CR Carriage Return
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CR Control Response
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CRC Cyclic Redundancy Check
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CRCOK CRC ok! (C/I channel code)
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CRED Credit Card Calling (I.256 A)
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CREF Connection Refused
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CS Cable Switching
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CS Conducted Susceptibility (EMS)
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CSMA/ Carrier Sense Multiple Access
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CSO Cold Start Only (in EOC)
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CSDN Circuit-Switched Data Network (T.70)
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CSPDN Circuit-Switched Public Data Network
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CSR Clock Shift Register
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CST Call State or Current State or Change State (quasi SDL)
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CT Call Transfer (I.252 A)
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CTMC Communications Terminal Module Controller
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CTS Clear to Send
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CUG Closed User Group (I.255 A)
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CW Call Waiting (I.253 A)
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D-CTL D Channel Controller (IDEC)
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DAC Digital to Analog Converter
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DACOM Data Communictions Corp. of Korea (ROK)
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DACK DMA ACK
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DAEDR Delimitation, Alignment and Error Detection Procedure
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in Receive Direction
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DAML Digital Added Main Line (pair gain)
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DAP Document Application Profile
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DASS2 Digital Access Signaling System 2 (BT, DPNSS subset)
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DBCS Data Bank Control System
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DBOS Data Bank Organization System
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DBSS Data Bank Security System
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DBP (Ger) German Federal Post
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DC Device Cinfirmation (C/I channel code)
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DCn Device Control n
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DCC Data Country Code (ISO 7498)
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DCE Data Circuit-terminating Equipment
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DCE Data Communications Equipment
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DCH D-Channel Handling bit
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DCL Data Clock (i.e. IOM2)
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DCME Digital Circuit Multiplexing Equipment
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DCS Data Communications Subsystem
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DD Data Downstream (i.e. IOM2)
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DDI Direct Dialing-In (I.251 A)
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DDN Defense Data Network
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DDS Dataphone Digital Service
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DDX Digital Data Exchange
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DEAC Deactivation (C/I channel code)
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DECT Digital European Cellular Phone
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DEE (Ger) data terminal
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DEL Delete
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DET Detatch Msg. (I.451)
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DI Deactivation Indication (C/I channel code)
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DIA Document Interchange Architecture
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DIC Digital Concentrator
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DID DI Downstream
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DID Direct Inward Dialing
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DIF Digital Interface
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DIGON (Ger) digital local network (Berlin)
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DIP Document Interchange Protocol (lower sublayer of OSI layer 6)
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DIR Direction
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DIS Disconnect
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DISC Disconnect (LAP-D Command, I.451)
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DISD Direct Inward Subscriber Access
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DIU Deactivate Indication
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DIU Digital Interface Unit
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DIV (Ger) digital exchange
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DIVF (Ger) DIV for long distance service
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DIVO (Ger) DIV for local service
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DL5MDA someone who collects each ISDN abbrevation crossing his way
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DLAB Divisor Latch Access Bit
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DLC Data Link Control
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DLCI Data Link Connection Identifier (I.440: SAPI+TEI)
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DLE Data Link Escape (ASCII Control)
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DLE Delete
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DLS Digital Line Section
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DLUC Digital Line Unit Control
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DM Disconnected Mode (LAP-D Response)
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DMA Direct Memory Access
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DNHR Dynamic Nonhierarchical Routing
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DNIC Data Network Identification Code (ISO 7498)
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DOD (USA) Dept. of Defense
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DPC Destination Point Code (SS7)
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DPCM Differential PCM
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DPLL Digital Phase Locked Loop
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DPNSS Digital Private Network Signaling System (BT)
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DPSK Differential Phase Shift Keying
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DR Deactivate Request (C/I channel code)
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DRAM Dynamic RAM
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DRCS Dynamically Redefinable Character Sets
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DR Deactivation Request
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DRE Direction
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DSC Digital Subscriber Controller Am79C30A
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DSGLA (Ger) DLS
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DSI Digital Speech Interpolation
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DSM Digital Switching Module
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DSMX (Ger) digital signal multiplexer
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DSP Digital Signal Processing
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DSP Domain Specific Part (ISO 7498)
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DSR Data Set Ready
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DSU Data Servicing Unit
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DT Data Through (C/I channel code in test mode)
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DT1 Data Form Class 1
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DTAM Document Transfer Access and Manipulation
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DTC Digital Telephone Controller (ARCOFI + IBC + ICC)
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DTE Data Terminal Equipment
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DTM Digital Trunk Module
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DTMF Dual Tone Multi Frequency (Dial) PSB8593
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DTR Data Terminal Ready
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DU Data Upstream (i.e. IOM2)
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DU Deactivation Request Upstream (C/I channel code)
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DUP Data User Part
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DVA (Ger) data processing equipment
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DYRECT SIDES Dynamic Real Time Communication Tester
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(in SITEST, tests IOS on Board)
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EA Expedited Data Acknowledgement (SS7: in SCCP)
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EA Extended Adress
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EBCDIC Extended Binary Coded Decimal Interchange Code
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EC Echo Canceller
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EC European Community
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ECL Emitter Coupled Logic
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ECMA European Computer Manufactueres Association
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EDI Electronic Data Interchange
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EEPROM Electrically Erasable Programmable Read Only Memory
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EIn Error Indication n (C/I channel code)
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EM Encription Module
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EM End of Medium (ASCII Control)
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EMC Electromagnetic Compatibility
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EME Electromagnetic Emission
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EMI Electromagnetic Interference
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EMS Electromagnetic Susceptibility
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EMV EMC (German)
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ENQ Enquiry
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EO End Office
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EOC Embedded Operation Channel
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EOM End of Message
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EP Expedited Data (SS7: in SCCP)
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EPIC Extended PIC PEB2055
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EQ Equalizer
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ERC Error Control (IOS)
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ESC Enhanced Speech Circuit PSB4505/6
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ESC Escape (ASCII Control)
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ESCC2 Extended high level Serial Communication Controller SAB82532
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(2 channel multi protocol controller)
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ESCC8 like ESCC2, but 8 channels SAB82538
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ESF Extended Super Frame
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EST established
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ET Exchange Termination
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ETB End of Transmission Block
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ETRI Electronics and Telecommunications
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Research Institute (ROK)
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ETX End of Text
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EVST (Ger) end exchange
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EWSD (Ger) electronic dialing system (Digital)
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FA Frame Aligner
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FAA Facility Accepted (SS7: in ISUP)
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FAC Facility
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FACD Facility Changed Msg.
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FAR Facility Request (SS7: in ISUP)
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FAS Frame Alignment Signal
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FAX Faximile
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FC Feature Control
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FC Frame Control
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FCC Federal Communications Comission (USA)
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FCS Frame Check Sequence
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FDDI Fiber Distributed Data Interface (X3T9.5)
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FDM Frequency Division Multiplex
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FDMA FDM Access
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FEBE Far End Block Error (IOM2 Monitor Message)
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FEC Forward Error Correction
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FECC Front End Communication Computer
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FF Form Feed
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FIB Forward Indication Bit (SS7)
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FIFO First In First Out (storage)
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FIN Facility Information Msg.
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FISU Fill In Signal Unit (SS7)
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FJ Frame Jump (C/I channel code)
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FM Frequency Modulation
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FMM Finite Message Machine
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FNBE Far and Near end Block Error (IOM2 Monitor Message)
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FOT Forward Transfer (SS7: in ISUP)
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FP Functional Protocol
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FPC Frequency Comparison Pilots
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FPS Fast Packet Switching
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FRAC Frame Aligner Circuit PEB2030
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FRJ Facility Rejected Msg. (SS7: in ISUP)
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FRMR Frame Reject (LAP-D Response)
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FRQ Facility Request Message
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FS File Separator
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FSC Frame Synchronization Clock (i.e. IOM2)
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FSN Forward Sequence Number
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FTP File Transfer Protocol (DOD)
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FTZ (Ger) Central Telecom Technical Office (of DBP)
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GAP (EC) Group of Analysis and Provision (for ONP)
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GB Great Britain
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GC Group Card
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GCI General Circuit Interface (IOM/U(k0)-Interface)
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GCR General Configuration Register
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Ger German
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GP Group Processor
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GPPC General Purpose Power Controller PSB2121
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GPS Global Positioning System
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GRA GRS Acknowledgement
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GRS Circuit Group Reset (SS7: in ISUP)
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GS Group Separator
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GTEI Global TEI
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GWY Gateway
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H Hold state (in EOC)
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H- High-
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HAC Hands-Free Add-On Circuit (for speakerphone) PSB45030
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HDB3 High-Density Bipolar 3 (CEPT PRI)
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HDLC High Level DLC
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HDTV High Definition TV
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HFR Hardwara Failure Rate
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HI High Impedance (C/I channel code)
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HI Highway Interrupt
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HL IT Siemens Semiconductors (HL), Info Technics (IT)
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HOLD Call Hold (I.253 B)
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HSCC High Level Serial Communication Controller SAB82520
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HSCX extended HSCC SAB82525
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HT Horizontal Tabulator
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HTI Highway Transfer Interrupt
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HU High-Usage trunk
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HW PCM Highway
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I Information (LAP-D Command)
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I- Information (numbered I-Frames)
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I/O Input/Output
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IAM Initial Address Msg. (SS7: in ISUP)
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IBC ISDN Burst Transceiver Circuit PEB2095
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IBFN (Ger) integrated high bandwith long distance network
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IC Incoming Call (X.25)
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ICOM (Taiwan) Integrated Communication
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ICAO International Civil Aviation Organization
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ICC ISDN Communications Controller PEB2070
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IDA (GB) Interated Digital Access (B64+B8+D8)
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IDEC ISDN D-channel Exchange Controller PEB2075
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IDI Initial Domain Identifier (ISO 7498)
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IDN (Ger) integrated data network
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IDPC Integrated Data Protocol Controller SAB79C401
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IEC International Electrotechnical Comission
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IEC ISDN Echo Cancellation Circuit
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IEC-T IEC for 4B3T PEB2090
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IEC-Q1 IEC for 2B1Q PEB2091
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IEC-Q2 IEC-Q specially for LT and NT1 (without microprocessor) PEB2092
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IEC-Q3 IEC-Q with parallel processor interface (i.e. for DAML) PEB2093
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IEC-P (old name of IEC-Q3)
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IEPC ISDN Exchange Power Controller PEB2025
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IFRB International Frecuency Registration Board
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IFS (Switzerland) integrated telecom service
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IGS Idenitfy Graphic Subrepertoire (Teletex)
|
|
IKZ (Ger) pulse dial
|
|
ILC ISDN Link Controller
|
|
IM Input MUX
|
|
IMC IOS Mailbox Control
|
|
IMMU IOS Memory Management Unit
|
|
IMP Interpersonal Messaging Protocol (X.420: P2)
|
|
INF Information (SS7: in ISUP)
|
|
INR Information Request (SS7: in ISUP)
|
|
INS (Japan) Information Network System (B64+B16+D8)
|
|
INT Interrupt (i.e. C/I channel code)
|
|
IOC Integrated Optical Circuit
|
|
IOM ISDN-Oriented Modular (Architecture and Interfaces)
|
|
IOM2 extended IOM
|
|
IOS ISDN Operational Software SIPB6013
|
|
IP Intermediate Point
|
|
IP Internet Protocol (TCP/IP, DOD)
|
|
IPABX ISDN PABX
|
|
IPAC ISDN PC Adapter Circuit PEB21??
|
|
IPAT ISDN Primary Access Transceiver PEB2235
|
|
IPB SIPB
|
|
IPBC IOM2 PBC (old name for EPIC)
|
|
IPC Interprocess Communication
|
|
IPCS IOS Process Control System
|
|
IPP IOS Protocol Part
|
|
IRPC ISDN Remote Power Control PSB2120
|
|
ISAC-P ISDN Subscriber Access Controller (S Bus, PABX, U) PEB20950
|
|
ISAC-S ISDN Subscriber Access Controller (S Interface ICC+SBC) PEB2085
|
|
ISDN Integrated Services Digital Network
|
|
ISM ISDN Switching Module
|
|
ISO International Organization for Standardization
|
|
ISP Intermediate Service Part
|
|
ISPC International Signaling Point Code (SS7)
|
|
ISPBX Integrated Systems PBX
|
|
ISSS ISDN Supporting System
|
|
ISTA Interrupt Status Register
|
|
ISUP ISDN User Part (SS7: Q.76X)
|
|
IT Inactivity Test (SS7: in SCCP)
|
|
ITAC ISDN Terminal Adaptor Circuit PEB2110
|
|
ITSTC Information Technology Steering Committee
|
|
(CEN, CENELEC, CEPT)
|
|
ITU International Telecommunication Union
|
|
IVD Integrated Voice Data
|
|
IWF Interworking Facility (Gateway)
|
|
IWU Interworking Unit (Gateway)
|
|
JDC Japan Digital Cellular
|
|
KTA Korea Telecommunication Authority (ROK)
|
|
KVST (Ger) node exchange
|
|
KZU (Ger) signaling converter
|
|
L3-ERC Layer 3 Error Control (IOS)
|
|
L3M Layer 3 Mgr. (IOS)
|
|
LAN Local Area Network
|
|
LAPB (LAP-B) Link Access Procedure of Balanced Mode
|
|
LAPD (LAP-D) Link Access Procedure of D-Channels
|
|
LAPM (LAP-M) Link Access Protocol for Modems
|
|
LAPX LAPB extended (T.71, for half duplex teleservice)
|
|
LATA Local Access and Transport Areas
|
|
LBBD Loopback B1, B2 and D channel request
|
|
(Command in IOM2 Monitor and EOC)
|
|
LBn Loopback channel Bn request
|
|
(Command in IOM2 Monitor and EOC)
|
|
LC Line Card
|
|
LCN Logical Channel Number
|
|
LCS7 Link Controller for Signaling System No.7 PEB3040
|
|
(layer 2, CCITT Q.703, upgraded HSCX, pin compatible)
|
|
LE Local Exchange (contains D-CTL)
|
|
LF Line Feed
|
|
LH Line Hunting (I.252 F)
|
|
LI Length Indicator (SS7)
|
|
LIU Line Interface Unit
|
|
LL Logical Link
|
|
LLC Low Level Controller SIPx6100
|
|
LLD Low Level Device Drivers (IOS)
|
|
LLID LL Identifier
|
|
LLL Last Look Logic
|
|
LLP Link Layer Protocol (LAPD)
|
|
LNA Low Noise Amplifier
|
|
LOF Loss of Frame
|
|
LRC Longitudinal Redundancy Check
|
|
LRN Local Reference Number
|
|
LSEC Loss of SEC (C/I channel code)
|
|
LSL Loss of Signal Level (C/I channel code)
|
|
LSSU Link State Signal Unit (SS7)
|
|
LSU Loss of Signal level of U interface (C/I channel code)
|
|
LSUE LSU Error condition (C/I channel code)
|
|
LT Line Termination
|
|
LT-S LT on S bus
|
|
LT-T LT on T interface
|
|
LTD LT Disable (C/I channel code)
|
|
LTG Line Trunk Group
|
|
LTU Line Trunk Unit
|
|
LTUC LTU Control
|
|
LU 6.2 protocol for APPC
|
|
LWL (Ger) OFT
|
|
MA Multiple Access (Primary)
|
|
MAP Manufacturing Automation Protocol
|
|
MAP Mobile Application Part
|
|
MCI Malicious Call Identification (I.251 G)
|
|
MDF Main Distribution Frame
|
|
MF Mainboard Firmware (IOS)
|
|
MF Multi Frame
|
|
MFJ Modification of Final Judgement
|
|
MFC Multiple Frame operation Control (IOS)
|
|
MH Modified Huffman code (FAX)
|
|
MHS Message Handling Service
|
|
MIP Microprocessor Interface Port
|
|
MIPS Million Instructions per Second
|
|
MML Man Machine Language
|
|
MMS43 Modified Monitoring State 43 Code (4B3T)
|
|
MMU Memory Management Unit (IOS)
|
|
MNP Microcom Networking Protocol
|
|
MOC Ministery of Communication
|
|
MOD Ministery of Defense
|
|
MON Monitor Channel (i.e. IOM2)
|
|
MP Microprocessor
|
|
MPC MP Command
|
|
MPDU Message Protocpl Data Units (X.411)
|
|
MR Modified READ (Relative element address designate, FAX)
|
|
MR Monitor Read (flow control bit in IOM2)
|
|
MS Menue Software (SIPB.EXE)
|
|
Msg Message
|
|
MSN Multiple Subscriber Number (I.251 B)
|
|
MSU Msg. Signal Unit (SS7)
|
|
MTA Message Transfer Agent (X.400)
|
|
MTAE Message Transfer Agent Entity (X.400)
|
|
MTP Message Transfer Part (SS7: Q.701-Q.710)
|
|
MTP Message Transfer Protocol (X.411: P1)
|
|
MTS Memory Time Swich PEB2040
|
|
MTSC MTS CMOS (512 incoming channels) PEB2045
|
|
MTSL MTS Large (1024 incoming channels) PEB2047
|
|
MTSS MTS Small (256 incoming channels) PEB2046
|
|
MUNICH Multichannel (32) Network Interface Controller SAB20320
|
|
MUSAC Multipoint Switching and Conferencing Unit PEB2245
|
|
MUX Multiplexer
|
|
MW (Ger) service word
|
|
MX Monitor Transmit (flow control bit in IOM2)
|
|
N(R) (NR) Receive Sequence Number
|
|
N(S) (NS) Transmit Sequence Number
|
|
NAK Negative Acknowledge
|
|
NB Narrow Band
|
|
NCC Notify Corrupted CRC (in EOC)
|
|
NCU Network Control Unit
|
|
NCP Network Control Point (in a SDN)
|
|
NCTE Network Channel Terminating Equipment (FCC: NT1)
|
|
NDC National Destination Code (i.e. area code)
|
|
NDU Network Data Unit
|
|
NEBE Near End Block Error (IOM2 Monitor Message)
|
|
NET (EC) European standards of telecommunication
|
|
NF (Ger) low frequency
|
|
NFS Network File System
|
|
NFT Network File Transfer
|
|
NLP Network Layer Protocol
|
|
NORM return to Normal (IOM2 Monitor Command/Message)
|
|
NRM Normal Response Mode (HSCX)
|
|
NRZ Non Return to Zero
|
|
NRZC NRZ Change
|
|
NRZI NRZ Inverted
|
|
NRZM NRZ Mark
|
|
NSP Network Service Part (SS7: SCCP+MTP)
|
|
NStA (Ger) PBX
|
|
NT Network Termination
|
|
NT1 NT serving Layer 1 (NCTE, network interface of NT,
|
|
between reference points T and U)
|
|
NT2 NT serving Layer 1 to 3 (subscriber interface of NT,
|
|
between reference points S and T)
|
|
NT/S NT Simulator SIPB7020
|
|
NTM NT Test Mode (IOM2 Monitor Message)
|
|
NUC Nailed-up Connection
|
|
NUA (international) Network User Address
|
|
NUI Network User Identification
|
|
NUL Null
|
|
NUP National User Part
|
|
NVM Non Volatile Memory (EEPROM)
|
|
NWI Network Interface
|
|
OA&M Operations, Administration & Maintenance (SS7: Q.79X)
|
|
OC Office Communication
|
|
OCP Origination Point Code (SS7)
|
|
ODA Office Document Architecture
|
|
OEIC Optoelectronic Integrated Circiut
|
|
OFT Optical Fiber Tube
|
|
OM Output MUX
|
|
OMAP Operations and Maintanance Application Part
|
|
OMC Operating and Maintainance center
|
|
ONA Open Network Architecture (FCC: Computer Inquiry III)
|
|
ONP Open Network Provision
|
|
OPC Originating Point Code
|
|
OPDU Operations Protocol Data Unit (X.411: P3)
|
|
OSI Open Systems Interconnection
|
|
OVST (Ger) local exchange
|
|
OWG Optical Wave Guide
|
|
P/F Poll/Final Bit
|
|
PABX Private Automatic Branch Exchange
|
|
PAD Packet Assembly/Disassembly Device
|
|
PAM Pass Along Method (SS7: in ISUP)
|
|
PAM Primary Access Method
|
|
PAS Protocol Architecture Specification for IOS (PCT)
|
|
PBC Peripheral Board Controller PEB2050/51
|
|
PBX Private Branch Exchange
|
|
PC Power Controller
|
|
PC Primary Center
|
|
PCL PCM data Clock
|
|
PCM Pulse Code Modulation
|
|
PCN Personal Communication Network (UK, mobile comm.)
|
|
PCR Preventive Cyclic Retransmission (SS7: in MTP)
|
|
PCSN Public Circuit Switched Network (?)
|
|
PCT IOS Program Coding Tools (SDL oriented) SIPO6021
|
|
PDC Primary Digital Carrier
|
|
PDM Power Down Mode
|
|
PDU Protocol Data Unit (X.400)
|
|
PDN Public Data Network
|
|
PFOFF Power Feed OFF (C/I channel code)
|
|
PFS Page Format Selection (Teletex)
|
|
PFS PCM Frame Synchronisation Signal
|
|
PH Packet Handler
|
|
PH- Physical-
|
|
PIC PCM Interface Controller PEB2052
|
|
PIOCS Physical I/O System
|
|
PIP PCM Interface Port
|
|
PIU PCM Interface Unit
|
|
PKT Packet
|
|
PLC Physical Link Control (IOS)
|
|
PLD Partial Line Down (Teletex)
|
|
PLIC PCM Line Interface
|
|
PLL Phase Locked Loop
|
|
PLU Partial Line Up (Teletex)
|
|
PM Phase Modulation
|
|
PN Pseudo Noise (Code)
|
|
PNP Private Numbering Plan (I.255 B)
|
|
PPU Power Providing Unit
|
|
PRI Primary Rate Interface
|
|
PS Packet Switching
|
|
PSDN Packed-Switched Data Network (T.70)
|
|
PSF Packet Switching Facility
|
|
PSK Phase Shift Keying
|
|
PSL IOS Protocol Source Library
|
|
PSPDN Packed-Switched Public Data Network
|
|
PSR Phase Shift Register
|
|
PST SIDES Protocol Software Development
|
|
PSTN Public Switched Telephone Network (T.70)
|
|
PU Power Up (C/I channel code)
|
|
PUM PU Mode
|
|
PVC Permanent Virtual Circuit
|
|
Q-CIF Quarter CIF (for ISDN low end video)
|
|
QSC Quad S Interface Circuit PEB2084
|
|
QTAM Queued Telecom Access Method
|
|
RA Rate Adaption
|
|
RAD Receive Adress
|
|
RAM Random Access Memory
|
|
RBEF Read Block Error counter for Far end (IOM2 Monitor Command)
|
|
RBEN Read Block Error counter for Near end (IOM2 Monitor Command)
|
|
RBOC Regional BOC
|
|
RC Regional Center
|
|
RCC Request Corrupted CRC (in EOC)
|
|
RCL Route Clock
|
|
RCI Read Controller Interface (IOM2 Monitor Command)
|
|
RCP Remote Copy
|
|
RCRE Receive Corrected Reference Equivalent
|
|
RCU Repeater Control Unit (i.e. ASIC between two IEC-Q2s)
|
|
RDS Running Digital Sum
|
|
RDY Resynchonisation indication after loss of framing
|
|
(C/I channel code)
|
|
RE Radiated Emission (EME)
|
|
REC Receiver
|
|
REJ Reject (LAP-D Command/Response, I.451)
|
|
REL Release (I.451)
|
|
RES Reset (C/I channel code)
|
|
RES Resume (I.451)
|
|
RES1 Reset receiver (C/I channel code)
|
|
REMSH Remote Shell
|
|
REV Reverse Charging (I.256 C)
|
|
RFI Radio Frequency Interference
|
|
RID Read Identification (IOM2 Monitor Command)
|
|
RKW (Ger PCM30) FAS
|
|
RL Return Loss
|
|
RLC Release Complete Msg. (SS7: in SCCP)
|
|
RLOGIN Remote Login
|
|
RLSD Released Msg. (SS7: in SCCP)
|
|
RNR Receive Not Ready (LAP-D Command/Response)
|
|
ROK Republic of Korea
|
|
ROSE Remote Operation Service Element (TCAP subset)
|
|
RP Repeater
|
|
RPFC Read Power Feed Current value (IOM2 Monitor Command)
|
|
RPOA Recognized Private Operating Agency
|
|
RR Receive Ready (LAP-D Command/Response)
|
|
RS Radiated Susceptibiltiy (EMS)
|
|
RS Record Separator (ASCII Control)
|
|
RS Reset
|
|
RSC Reset Confirm (SS7: in SCCP and ISUP)
|
|
RSY Resynchronizing (C/I channel code)
|
|
RSYD RSY Downstream
|
|
RSYU RSY Upstream
|
|
RT Remote Terminal (opposite to COT)
|
|
RTB Retransmission Buffer
|
|
RTCA Radio Technical Commission of Aeronautics
|
|
RTN Return to Normal (in EOC)
|
|
RTS Request to Send
|
|
RTSE Reliable Transfer Service Element
|
|
RxSD Receive Serial Data
|
|
RZ Return to Zero (-> NRZ)
|
|
S- Supervisory (S-Frames)
|
|
SAA System Applications Architecture (for PS/2)
|
|
SABME Set Asynchronous Balanced Mode (ABM) Extended (LAP-D Command)
|
|
SAC Service Access Connector (-> SIPB)
|
|
SAI S Activity Indicator (in EOC)
|
|
SAM Subsequent Address Msg. (SS7: in ISUP)
|
|
SANE Signaling Area/Network Code (SS7)
|
|
SAP Service Access Point
|
|
SAPI Service Access Point Identifier
|
|
SAW Surface Acoustic Wafe (Filter) B5534
|
|
SBC S Bus Interface Circuit PEB2080
|
|
SBCX SBC extended PEB2081
|
|
SBUC S Bus Connector
|
|
SC Sectional Center
|
|
SCCP Signaling CCP (SS7: Q.71X)
|
|
SCL Station Clock
|
|
SCLK Slave CLK
|
|
SCM Scramble Coder Multiplexer
|
|
SCP Service Control Point
|
|
SCR Signaling Configuration Register
|
|
SCRC Send Corrected Reference Equivalent
|
|
SD Slip Detected
|
|
SDE Submission/Delivery Entity (X.400)
|
|
SDL Specification and Description Language
|
|
SDLC Synchronous DLC
|
|
SDM Space Division Multiplex
|
|
SDN Software Defined Network
|
|
SDP Submission and Delivery Protocol (X.411)
|
|
SDT Software Development Tools
|
|
SEC Signal level behind the Echo Canceller (C/I channel code)
|
|
SEL digital Selector (in TMS)
|
|
SF Service Field
|
|
SF Status Field (SS7)
|
|
SFB Set next FEBE to zero
|
|
SFD Superframe Detected (C/I channel code)
|
|
SGC Switching Group Control
|
|
SGH Select Graphic Rendition (Teletex)
|
|
SHI Select Horizontal Spacing (Teletex)
|
|
SI Sequenced Information
|
|
SI Service Indicator
|
|
SI Shift In (ASCII Control)
|
|
SICOFI Signal Processing Codec Filter PEB2060
|
|
SICOFI2 2 channel SICOFI PEB2260
|
|
SIDES Siemens ISDN Software Development and Evaluation System
|
|
SIF Signaling Information Field (SS7)
|
|
SIG Signaling equipment (in a trunk)
|
|
SIGS Signaling Strobe
|
|
SIN Status Indication Normal Alignment
|
|
SIO Service Information Octet (SS7)
|
|
SIP Serial Interface Port
|
|
SIPB Siemens ISDN PC User Board
|
|
SIPB 5XXX SIPB Modules
|
|
SIPB 7XXX SIPB Configurations
|
|
SIPMOS Siemens P MOS BUZ...
|
|
BSS...
|
|
BSP...
|
|
SIPO 6XXX Siemens ISDN PC Software Object Code
|
|
SIPS 6XXX Siemens ISDN PC Software Source Code
|
|
SITAC Siemens Isolated Thyristor AC
|
|
SITEST Siemens ISDN Protocol Software Test Tools SIPO6022
|
|
SIU Subscriber Line Interface Unit
|
|
SL Subscriber Line
|
|
SLA Subscriber Line Adress
|
|
SLC Signaling Link Code (SS7)
|
|
SLD Subscriber Line Data (Bus)
|
|
SLIC Subscriber Line Interface Circuit
|
|
SLM Subscriber Line Module
|
|
SLMA SLM Analog
|
|
SLMD SLM Digital
|
|
SLS Signaling Link Selection (SS7)
|
|
SM Service Module
|
|
SM Speech Memory
|
|
SMD Surface Mounted Device
|
|
SMF Sub Multi Frame
|
|
SMS Service Management System
|
|
SMTP Simple Mail Transfer Protocol
|
|
SNA System Network Architecture (IBM)
|
|
SO Shift Out
|
|
SOH Start of Header
|
|
SP (Ger) storage
|
|
SP Signal Point (Switching Office in SS7)
|
|
SP Stimulus Protocol
|
|
SPC Signaling Poiny Code (SS7)
|
|
SPC Stored Program Controlled
|
|
SPCR Serial Port Control Register
|
|
SQD Signal Quality Detector
|
|
SRAM Static RAM
|
|
SS7 Signaling System #7 (CCITT)
|
|
SSC Standard Speech Circuit PSB4500/-1
|
|
SSF Sub Service Field
|
|
SSI Serial Signal Interface
|
|
SSN Subsystem Number
|
|
SSP Send Single Pulses (C/I channel code for test mode)
|
|
SSP Service Switching Point
|
|
ST Self Test request NT (IOM2 Monitor Message)
|
|
ST Subscriber Terminal
|
|
STP Self Test Pass (IOM2 Monitor Message)
|
|
STATMUX Statistical Multiplexer
|
|
STCR Syncron Transfer Control Register
|
|
STEP SIDES Static Test of IOS and MF on board (in SITEST)
|
|
STM Synchronous Transfer Mode
|
|
STORY Screening Tool for Report Files (IOS)
|
|
STP Signal Transfer Point (SS7)
|
|
STS Space-Time-Space switch (TMS-TSI-TMS)
|
|
STS Steered Tenant Service
|
|
STS 2060 SICOFI software
|
|
STU 2000 stand alone ISDN user board
|
|
STU 2040 stand alone MTS user board
|
|
STU 2050 stand alone PBC user board
|
|
STU 2060 stand alone SICOF user board
|
|
STUDIALO PC Software for STU 2XXX
|
|
STX Start of Test
|
|
SU Signaling Unit
|
|
SUB Sub-addressing (I.251)
|
|
SUB Substitute Character (Teletex)
|
|
SUERM SU Error Rate Monitor
|
|
SUS Suspend (SS7: in ISUP)
|
|
SUSP Suspend (I.451)
|
|
SVC Switched Virtual Circuit
|
|
SVM Service Module
|
|
SVP Surge Voltage Protector various
|
|
SVS Select Vertical Spacing (Teletex)
|
|
SWFC Sliding-Window Flow Control
|
|
SYN Synchronous Idle
|
|
SYP Synchronisation Pulse
|
|
T double wire pair
|
|
T- Transportfunction-
|
|
T&R two wire phone connection
|
|
TA Terminal Adaption
|
|
TAC TEI Assignment Control (IOS)
|
|
TAC Technical Assistance Center
|
|
TAP Teletex Access Protocol (X.430: P5)
|
|
TC Toll Center
|
|
TC Transaction Capabilities
|
|
TCAP Transaction Capabilities Application Part
|
|
TCM Time Compression Multiplexing
|
|
(also "ping pong" or "burst" transmission, used in IBC)
|
|
TCP Transport Control Protocol (DOD, IP)
|
|
TCU Timing Control Unit
|
|
TDC Telex Destination Code (ISO 7498)
|
|
TDM Time Division Multiplex
|
|
TDMA TDM Access
|
|
TE Terminal Equipment
|
|
TE Transit Exchange (contains PSF)
|
|
TEI Terminal Endpoint Identifier
|
|
TELEKOM (Ger) telecom division of DBP
|
|
TELEX Teleprinter Exchange
|
|
TELNET virtual terminal protocol
|
|
TF (Ger) carrier frequency
|
|
THL Trans Hybrid Loss
|
|
TI Test Indication
|
|
TIC Telecom IC (IOM-Bus)
|
|
TIM Timing
|
|
TKO (Ger) telecom regulations
|
|
TM Testmode
|
|
TM Trasfer Modus
|
|
TM1 Terminal 1 (IOS)
|
|
TMA Trunk Module Analog
|
|
TMD Trunk Module Digital
|
|
TMS Time-Multiplexed Switching
|
|
TMX Trunk Module with X-interface
|
|
TN Tone (C/I channel code: wake up signal)
|
|
TNC Terminal Node Controller
|
|
TOP Technical Office Protocol
|
|
TOPQ Top of Queue (quasi SDL)
|
|
TRI Tone Ringer PSB652x
|
|
TS Time Slot
|
|
TSA Time Slot Assignment
|
|
TSC Tristate Control
|
|
TSI Time-Slot Interchange
|
|
TST Time-Space-Time switch (TSI-TMS-TSI)
|
|
TUP Telephone User Part (SS7: Q.72X)
|
|
TWX Teletype Writer Exchange
|
|
TxSD Transmit Serial Data
|
|
U single wire pair
|
|
U- Unnumbered (U-Frames)
|
|
U(k0) (Ger) U0 echo cancellation Interface
|
|
U(p0) (Ger) U0 burst mode Interface
|
|
UA Unnumbered ACK (LAP-D Response)
|
|
UA User Agent (X.400)
|
|
UAE User Application Entity or User Agent Entity (X.400)
|
|
UAI U Activation Indication (C/I channel code)
|
|
UBA Unblocking Acknowledgement
|
|
UBL Unblocling (SS7: in ISUP)
|
|
UDLC Universal DLC
|
|
UDT Unidata (SS7: in SCCP)
|
|
UDTS Unidata Servive (SS7: in SCCP)
|
|
UDP User Datagram Protocol
|
|
UI Unnumbered Information (LAP-D Command)
|
|
UIC U-Interface Unit
|
|
ULCU User Level Control/Command Unit
|
|
UOA U Interface Only Activation (in EOC)
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UP User Part
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US Unit Separator
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USART Universal Synchrounous/Asynchrounous Receiver/Transmitter
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USR User-to-User Information (SS7: in ISUP)
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UTC Unable to Comply Ack (in EOC)
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UTC Unacknowledged (Unnumbered) Information Transfer Control (IOS)
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UTM Universal Transaction Monitor
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UUCP Unix-System to Unix-System Copy
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UUS User-to-User Signaling (I.257 A)
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V(R) Receive Sequence Counter
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V(S) Transmit Sequence Counter
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VAC Vacuumschmelze (produces cores and transformers)
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VANS Value Added Network Service
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VAP Value Added Process
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VAP Videotext Access Point
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VC Virtual Call
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VCB Virtual Circuit Bearer
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VFAC Verified and Forced Account Codes
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VFN Vendor Feature Node
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VHDL Very High Scale IC Description Language (DOD)
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VL (Ger) connecting cable
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VPT Virtual Private Network
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VSAT Very Small Aperture Terminal (for satellite communication)
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VSP (Ger) full frame storage
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VSt (Ger) exchange unit
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VT Vertical Tabulator
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VT Virtual Terminal
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VTAM Virtual Telecom Access Method
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WADS Wide Area Data Service
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WATS Wide Area Telephone Service
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WCI Write Controller Interface (IOM2 Monitor Command)
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WDFHP recursive high pass filter + decimation filter
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WDFLP recursive low pass filter + decimation filter
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WDM Wavelength Division Multiplex
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XAD Transmit Adress
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XFIFO Transmit FIFO
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XID Exchange Identification (LAP-D Command/Response)
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XOFF Transmission Off (DC1)
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XON Transmission On (DC3)
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XPL Cross Reference Protocol Listing (PCT)
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ZCS Zero Code Suppression
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ZSP (Ger) intermediate (buffer) storage
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ZWR (Ger) intermediate regenerator
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ZZF (Ger) central office for approvals in telecommunications (DBP)
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ZZK (Ger) central signaling channel
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