Telephony Abbreviations

• A3 - (Authentication Algorithm) - authentication algorithm used to calculate the response value from a random number using a key;
• A5 - (Stream Cipher Algorithm) - an encryption / decryption algorithm for messages, control signals and user data using a key;
• A8 - (Ciphering Key Generation Algorithm) - an encryption key generation algorithm used to calculate a key from a random number using a key;
• ABC - code of geographically determined numbering zone
• ACL - (Access Control List)
• ADSL - (Asymmetric Digital Subscriber Line) - Asymmetric Digital Subscriber Line
• AE - (address extension) - address field extension
• ALEX - (external alarm set) - external alarm set
• AMA - (automatic message accounting) - system for automatic accounting of the cost of telephone calls
• API - (Application Programming Interface) - Application Programming Interface
• APS - (application progra in system) - application system
• ATCL - (access and test circuit for subscriber lines) - subscriber line access and test circuit
• ATE - (automatic test equipment) - automatic test equipment
• ATE: T - (automatic test equipment for trunks (end-to-end routining)) - automatic test equipment for trunks (end-to-end testing)
• ATE: TM - (automatic test equipment for transmission measuring) - automatic test equipment for measuring transmission characteristics
• ATME2 - (automatic transmission measuring and signaling testing equipment R2 for international 4-wire telephone circuits) - automatic equipment for measuring transmission characteristics and testing R2 signaling on international 4-wire telephone lines
• ATOP - (automatic operator) - automatic operator
• AU - (answer unit) - answering machine
• AWL - (selector logic) - selector logic

• B: CMY - (to common memory) bus to shared memory
• B: IOC - (bus system for input / output control) bus system for an I / O device
• BA - (basis access)
• BAP - (base processor) main processor
• BAPM - (base processor master)
• BAPS - (base processor spare) core processor, spare
• BD - (bus distributor) tire distributor
• BDB - (bus distributor basic module for DLU)
• BDCG - (bus distributor module with clock generator for DLU) bus distributor module with a clock generator for DLU
• BDE - (bus distributor extension module for DLU) module for expanding a bus distributor for DLU
• BERG - (bit error ratio counting) account of the frequency of occurrence of errors by bits
• BHCA - (busy hour call attempts) attempts to establish calls at the busy hour (NN); number of calls in NNN
• BICC - (bearer independent call control) call control protocol regardless of the carrier channel on ITU-T Q.1901
• BMML - (basic man-machine language)
• BRI - (Basic Rate Interface) ISDN
• BSN - (backward sequence number)
• BZA - readiness for acceptance

• CAA - (communication access analog)
• CAMA - (centralized automatic message accounting) system of centralized cost accounting for telephone calls
• CAP - (call processor) call processor
• CAS - (channel associated signaling) dedicated channel signaling
• CCG - (central clock generator)
• CCG (A) - (central clock generator (A)) central clock generator (A)
• CCIR - (International Radio Consultative Committee) International Radio Advisory Committee <031 "> (CCIR)
• CCITT - (International Telegraph and Telephone Consultative Committee) International Telegraph and Telephony Advisory Committee (CCITT)
• CCNC - (common channel signaling network control)
• CCNP - (common channel signaling network processor) common channel signaling network processor
• CCS - (common channel signaling)
• CCU - (central clock supply unit)
• CDD - (central documentation department)
• CDR - (call detail record or charge detail record) - detailed information about the call, report on the results. Administrative functionality of telephone switches and softswitches
• CDEX - (clock distributor external) clock distributor, external
• CG - (clock generator) clock generator
• CG / MUX - (clock generator / multiplexer for message buffer (B)) clock generator / multiplexer for message buffer (V)
• CGR - (channel group) channel group
• CGSM - (clock generator and signal multiplexer) clock generator and signal multiplexer
• CHILL - CCITT high-level programming language) CHILL language
• Cl - (common interface) common interface
• CL - (coupling logic) communication logic
• CLIP - (Calling Line Identification Presentation) representation of identification, i.e. calling line numbers, see also Defining a telephone number
• CLIR - (Calling Line Identification Restriction) restriction of the identification of the calling line, see also Determination of telephone number
• CNIP - (Calling Line Identification Presentation) representation of the name, text description of the calling line, see also [[Caller ID] | Caller ID name]]
• CNIR - (Calling Line Identification Restriction) name restriction, text description of the calling line, see also [[Caller ID] | Caller ID name]]
• CLK - (exchange clock) station clock frequency; station clock
• CM - (control memory) control memory; control memory
• CML - (Command Manual) Command Guide
• CMY - (common memory) shared memory; total memory
• COC - (cross-office check) in-house check
• COFIP - (command file processor) command file processor
• COLP - (Connected Line Identification Presentation) representation of the identification of a connected line, see also Defining a phone number
• COLR - (Connected Line Identification Restriction) restriction of identification of a connected line, see also Defining a telephone number
• CONP - (Connected Line Name Presentation) representation of the name, text description of the connected line
• CONR - (Connected Line Name Restriction) restriction of the name, text description of the connected line
• COUB - (conference unit, module B) conference unit, module B
• CP - (coordination processor) coordination processor
• CP113 - (coordination processor 113) coordination processor 113
• CPI - (coordination processor interface) coordination processor interface
• CR - (code receiver) code receiver
• CRM - (multifrequency code receiver) MSC receiver
• CRM: R2 - (multifrequency code receiver for R2 signaling) MSC receiver for the R2 signaling system
• CRP - (code receiver for pushbutton dialing) receiver for keypad dialing with multi-frequency code
• CSYP - (central system panel) central system panel
• CSYPD - (central system panel display) display of the central system panel
• Ctd - (cartridge tape device) cassette tape drive
• CTU - (control unit) control unit

• DCC - (direct current converter) DC / DC converter
• DCN - (data communications network) data network
• DCP - (data communication processor) data processor
• DCR - (digital code receiver)
• DCRA - (digital code receiver module A) digital code receiver, module A
• DCRB - ​​(digital code receiver module B) digital code receiver, module B
• DCRC - (digital code receiver module C) digital code receiver, module C
• DDF - (Digital Distribution Frame) - Digital Cross
• DE - (diagnostic unit) - diagnostic unit
• DEF - code of a geographically undefined numbering zone
• DEC - (digital echo compensator) - digital echo canceller
• DIU - (digital interface unit) - digital interface
• DIU30 - (digital interface unit, 2048 kbit / s) - digital interface, 2048 kbit / s
• DIU: LDIB - (digital interface unit for local DLU interface, module B) digital interface for the local DLU interface, module B
• DIU: LDID - (digital interface unit for local DLU interface, module D) digital interface for local DLU interface, module D
• DIUD - (digital interface unit for DLU) digital interface for DLU
• DLC - (data link control) data link control
• DLU - (digital line unit) digital subscriber unit
• DLUC - (control for DLU) DLU control device
• DMA - (direct memory access)
• DPS - (data processing system) data processing system
• DRAM - (dynamic random-access memory) random access memory
• DSB - (digital switchboard) digital switch
• DSL - (Digital Subscriber Line) Digital Subscriber Line
• DSLAM - (Digital Subscriber Line Access Multiplexer) Digital Subscriber Line Access Multiplexer
• DSS1 - (digital subscriber signaling system no. 1) digital subscriber alarm system # 1
• DTI - (data terminal interface) data terminal device interface
• DTMF - (Dual-Tone Multi-Frequency)
• DTLDSB - (data terminal interface for digital switchboard) data terminal interface for a digital switch
• DV - (data processing) data processing
• DYB - (display board) indicator board

• E1 - primary digital stream of the plesiochronous digital hierarchy ( PDH ) with a transmission speed of 2048 kbit / s
• EDV - (electronic data processing)
• EGN - (detailed billing) detailed accounting (cost of phone calls)
• EM - (external memory) external memory; external memory
• EMD - (noble-metal uniselector) noble metal rotary finder
• EMML - (extended man-machine language for screen oriented terminals)
• EMSP - (emergency service equipment for pushbutton subscribers of DLU) emergency equipment for DLUs with keypad dialing
• EMV - (electromagnetic compatibility) electromagnetic compatibility (EMC)
• EEPROM - (electrically erasable programmable read-only memory) electrically erasable programmable read-only memory (EPROM)
• ETEAE - (end-to-end test equipment, answer equipment) end-to-end test equipment, answering machine equipment
• ETSI - (European Telecommunications Standards Institute) European Telecommunications Standards Institute
• EWSD - (Digital Electronic Switching System)

• F: CR (A) - (module frame A for code receivers) module cassette A for code receivers
• F: CRES - (module frame for digital code receivers and digital echo suppressors) module cassette for digital code receivers and digital echo suppressors
• F: DLU (A) - (module frame A for DLU) module cassette A for DLU
• F: DLU (B) - (module frame B for DLU) module cassette B for DLU
• F: LTGA (A) - (module frame A for LTGA) module cassette A for LTGA
• F: LTGA (B) - (module frame B for LTGA) module cassette B for LTGA
• F: LTGB (A) - (module frame A for LTGB) module cassette A for LTGB
• F: LTGC (A) - (module frame A for LTGC) module cassette A for LTGC
• F: LTGD (A) - (module frame A for LTGD) module cassette A for LTGD
• F: LTGF (A) - (module frame A for LTGF) module cassette A for LTGF

• HDSL - (High Data Rate Digital Subscriber Line) - high-speed digital subscriber line

• IMEI - (International Mobile Equipment Identity)
• IMSI - (International Mobile Subscriber Identity)
• INAP - (Intelligent Network Application Part)
• ISDN - (Integrated Services Digital Network) Integrated Services Digital Network
• ISUP - ( ISDN User Part) ISDN application part

• Ki (Individual Subscriber Authentication Key) - an individual user authentication key used to calculate the response value and encryption key;
• Kc (Ciphering Key) - an encryption key used to encrypt / decrypt messages, control signals and user data in a radio channel;

• L2TP - (English Layer 2 Tunneling Protocol - a tunneling protocol of the second level) - in computer networks, the tunneling protocol used to support virtual private networks.

• MAC - (Media Access Control) media access control
• MDF - (Main Distribution Frame) main cross
• MGW - (Media Gateway) media gateway
• MPLS - (multiprotocol label switching) - multi-protocol label switching
• MUX - (Multiplexor) Multiplexer
• MSIN - (Mobile Subscriber Identification Number) individual mobile number

• OLT - (Optical Line Terminal) PON Optical Line Terminal

• PDH - (Plesiochronous Digital Hierarchy) Plesiochronous Digital Hierarchy
• PIN code - (Personal Identification Number) analogue of the password for SIM cards
• POTS - (Plain Old Telephone Service)
• PSTN - (Public Switched Telephone Network) public switched telephone network, PSTN
• PRI - ( Primary Rate Interface ) ISDN Primary Access Interface

• SHDSL - (Single-pair High-speed Digital Subscriber Line) - Single-pair High-speed digital subscriber line, provides symmetrical duplex data transmission with speeds from 192 Kbps to 2.3 Mbps (in increments of 8 Kbps) on one pair of wires , respectively, from 384 kbit / s to 4.6 Mbit / s.m. in two pairs.

• TDM - (Time Division Multiplexing) time division multiplexing
• TMSI - (Temporary Mobile Subscriber Identity) - temporary international user identification number.

• VDSL - (Very-high data rate Digital Subscriber Line) - ultra-high-speed digital subscriber line
• VoIP - (Voice over Internet Protocol) - technology for transmitting voice over the Internet , as well as a special case of this, IP-telephony (telephony via IP )
• VPN - (Virtual Private Network) - a generic name for technologies that allow one or more network connections (logical network) over another network (for example, the Internet).

• AAL - analogue subscriber line
• Abs - subscriber network
• AVU - subscriber high-frequency installation
• ADIKM - adaptive DIKM
• AK - subscription kit
• AL - subscriber line
• AMS - antenna mast constructions
• АМТС - automatic long-distance telephone exchange
• Caller ID - automatic number identification (on the PBX - Number Definition Equipment)
• AR - subscriber register
• ASL - subscriber trunk
• TSA - analog transmission system
• ACP - an automated billing system
• ATS - automatic telephone exchange
• ATSDSH - ATS decade-step
• ATSK - automatic telephone exchange coordinate
• ATSKU - automatic telephone exchange improved
• ATSKE - quasi-electronic telephone exchange
• ADC - Analog-to-Digital Converter
• ATTsK - digital channel transit equipment
• ATSE - automatic telephone exchange electronic

• BAL - block of subscriber lines
• BCS - space-time switching unit
• BLS - wireless communication lines
• BP - power supply
• BTS - tone block
• BU - control unit
• BCA - block of digital analyzers

• BAM - remote subscriber module
• VVLS - waveguide communication line
• VZS - intraband network
• VKM - remote switching module
• VLS - overhead communication line
• FOCL - fiber communication line
• VM - virtual machine
• WOK - fiber optic cable
• FOCL - fiber optic communication line
• OSI - Reference Model for Open Systems Interconnection (OSI)
• VRK - time division of channels
• VSK - dedicated signaling channel
• BCC - interconnected communication network
• VSSK - intrasystem signal channel
• VTS - departmental telephone network
• VU - external devices / call device

• HAK - group subscriber kit (kit with PRI interface)
• DHW - ring signal generator
• GZP - city (zone) extension
• GI - Group Finder
• GRI - generator-distributor of impulses
• GS - signal “station readiness”
• GT - group path
• GTS - city telephone network

• DVO - an additional type of service
• DIKM - differential PCM
• DRM - additional workplace
• DSh - decade-step
• DSHI - decade-step finder
• DGN - Diagnostic equipment AK and AL
• DKSHI - ten-day loop pulse code

• EACC - a single automated communication system

ZAS - secret communication equipment

• ZS - zone network
• ZSL - custom-connecting line
• ЗСО - custom service system
• ZSS - ground-based satellite communications station
• ZTS - zone telephone network
• ZTU - zone transit node
• Memory - storage device

• PCM - Pulse Code Modulation
• IKM-15 - PCM compaction system for organizing 15 telephone channels (used for Rural telephony)
• IKM-30 - PCM sealing system for organizing 30 telephone channels ( E1 (ISDN) )
• IN - pulse dialing
• TIN - pulse NN
• IPLM - modernized line parameters meter
• ISHK - outgoing cord kit

• KA - address switch
• KVV - input-output channel
• KI - channel interval
• KM - switching module
• KP - final process / switching field
• KPV - signal " call control "
• KLS - cable communication lines
• KK - coaxial cable
• KSK - combined switching station (ATS / AMTS)
• KSL - connecting line kit

KSL (SKL) - a junction with a physical line

• CROSS - switching distribution equipment of communication networks
• KSPD - corporate data network
• KHPP - technical operation computer
• KTCH - tone frequency channel

• LAC - linear hardware workshop
• LK - linear kit
• LKS - linear-cable communication facilities
• LS - communication line
• LT - linear path
• LUS - linear and control signals
• LCC - local switching center

• MG - modular generator
• MGS - long-distance network
• MKT - small telephone cable
• МЦУСС - macro-regional communication network management center
• MS - local network (MS = GTS + STS)
• MSL - trunk trunk
• MCC - Mobile Satellite Service
• MSSS - multiservice communication network
• MTE - technical operation module
• ICC - local communication center

• NMD - magnetic disk drive
• NML - tape drive
• NN - dialer
• НРП - maintenance-free regeneration point
• HC - non-switched connection / direct connection
• NUP / NOPP - maintenance-free amplification point

• OAKTS - a nationwide automatically switched telephone network
• OBTS - general technological communication
• OGTS - basic city telephone exchange
• ACS - common signaling channel
• OKS7 - channel -wide alarm system No. 7
• OLT - linear path equipment
• OP - Endpoint
• OPS - reference station
• OPTS - backhaul telephone exchange
• PIU - serviced regeneration point
• OS - terminal station / operating system
• OTA - the main telephone
• OTA - terminal telephone
• OTS - terminal transit station (can serve as a UAK)

OTS - operational-technological communication
OTS - reference transit station
OTS - office telephone exchange

• OTU - terminal-transit node
• OU - terminal node
• PMO - Serviced Amplifier
• BCC - the main digital channel

• P - jumper / jumpers
• PLC - strip communication line
• PM - the last mile
• Software - software
• PS / K - substation / hub
• PSA - a set of connecting paired devices
• PSE - electronic substation
• PTA - payphone connection kit
• PU - peripheral device
• PDI - Plesiochronous Digital Hierarchy ( PDH )
• PCC - primary digital channel
• PC - personal computer
• PEMI - side electromagnetic radiation

PEMIN - secondary electromagnetic radiation and interference

• RATS - district automatic telephone exchange
• RK - junction box
• RMTS - manual long-distance telephone exchange
• РоРС - repair and operational radio communication
• RRL - radio relay communication lines
• Radar - radio communication lines
• RSL - Trunk Relay
• RSL - distribution and connection line
• RUS - district communications center
• RPP - district call center
• RCUSS - regional center of communication services
• RS - distribution cabinet
• RC - switchboard

• CAD - subscriber access network
• SAL - joint with AL
• SAR - rural administrative district
• SATsO - rack of analog-to-digital equipment
• ICS - joint with a dedicated channel, the stage of temporary switching
• VCA - ringing device
• SGT - joint with the group path
• SZ - busy signal
• SIP - sliding impulse with confirmation
• SK - balanced cable
• SKL (KSL) - a junction with a physical line
• SCS - switching system synchronization

SCS - structured cabling system

• SL - connecting line
• SLM - intercity connecting line
• SLS - satellite communication lines
• SOLT - a terminal end of a linear path
• SORM - means of operational-search measures (aka SOSM)
• SP - transmission system
• SPD - data transmission network
• SS - synchronization circuit / alarm system
• SSOP - public communication network
• STVKS - system of technological video conferencing
• STS - rural telephone exchange
• SCT - a joint with a digital path
• SES - telecommunication network
• SPUS - System of time-based accounting of connections

• TA - telephone set
• TAXOFON - telephone with immediate payment
• TZUS - transit zone communication center
• TMnUS - transit international communications center
• TMgUS - transit long-distance communication center
• TKS - telecommunication networks
• TH - tone set
• TNN - tone dialer
• TS - transit station
• TTS - transport telephone network
• TU - transit node
• PSTN - general use telephone network
• TEZ - a typical replacement element

• UAK - automatic switching unit
• UVS - incoming communication node
• UIS - outgoing communication node
• UKS - universal switching system
• UPATS - office-production automatic telephone exchange
• CSS - nodal station
• USP - rural-suburban hub
• OSS - the site of special services

  CSS - alarm and synchronization device

• UU - control device
• UMDS - multiservice access node

• FGS - group spectrum / signal shaper
• FSL - Physical Trunk
• Phase response - phase-frequency characteristic

• TSVOSP - digital fiber optic transmission system
• CBS - central synchronization unit
• TsKP - digital switching field
• DLS - digital communication line
• Call Center - Call Processing Center ( Call Center )
• CPP - the central call center
• CA - Central Station
• CSI - Digital Synchronous Hierarchy ( SDH )
• ISDN - Integrated Services Digital Network ( ISDN )
• CSK - Digital Switching System
• CSL - Digital SL
• DSP - Digital Transmission System
• CSB - central signaling device
• CHP - technical operation center
• TsUU - central control device
• TsUS - the central communication center

• ChNN - the hour of the greatest load
• ChRK - frequency division of channels
• ChTP - frequency-territorial plan

• ShK - cord kit

• EMVOS - a reference model for the interaction of open systems (OSI-RM model)
• EPU - power supply unit