AAV
|
Alternative Access Vendor
|
ABR
|
Available Bit Rate
|
AC
|
Access Control, or Alternating Current, or Authentication Center (also AUC)
|
ACD
|
Automatic Call Distributor
|
ACE
|
Authentication Encryption
|
ACEK
|
Authentication Encryption Key
|
ACK
|
Acknowledgement
|
ACP
|
Access Control Point
|
ACRE
|
Authorization and Call Routing Equipment
|
ADM
|
Add-Drop Multiplexer (SDH Element)
|
ADPCM
|
Adaptive Differential Pulse Code Modulation
|
ADSL
|
Asymmetric Digital Subscriber Line
|
AGRAS
|
Air-Ground Radiotelephone Automated Service
|
AIOD
|
Automatic Identification of Outward Dialed calls
|
AIN
|
Advanced Intelligent Network (ANSI IN Standard)
|
A-key
|
Authentication key
|
ALI
|
Automatic Location Information
|
AM
|
Amplitude Modulation
|
AMPS
|
Advanced Mobile Phone System
|
ANI
|
Automatic Number Identification
|
ANS
|
Advanced Network Services
|
ANSI
|
American National Standards Institute
|
ANSI-41
|
ANSI standard for mobile management (ANSI/TIA/EIA-41)
|
ANT
|
ADSL Network Terminator
|
AOA
|
Angle of Arrival
|
AOL
|
America On Line (ISP)
|
API
|
Application Programming Interface
|
APPC
|
Advanced Program-to Program Communications (IBM SNA)
|
APPN
|
Advanced Peer-to-Peer Network (IBM SNA)
|
ARCnet
|
Attached Resource Computer Network (Datapoint)
|
ARDIS
|
Advanced Radio Data Information Service
|
ARP
|
Address Resolution Protocol
|
ARPA
|
Advanced Research Projects Agency
|
ARPU
|
Average Revenue Per User
|
ARPANET
|
ARPA Network
|
ARQ
|
Automatic Repeat Request
|
ARS
|
Automatic Route Selection
|
ASCII
|
American Standard Code for Information Interchange
|
ASIC
|
Application-Specific Integrated Circuit
|
ASN.1
|
Abstract Syntax Notation 1 (ISO)
|
ASP
|
Application Service Provider
|
ASR
|
Automatic Send Receive, Automatic Speech Recognition
|
AT&T
|
American Telephone & Telegraph
|
ATIS
|
Alliance for Telecommunications Industry Solutions (formerly ECSA)
|
ATM
|
Asynchronous Transfer Mode, Automatic Teller Machine
|
ATSC
|
Advanced Television Systems Committee
|
AUI
|
Attachment Unit Interface
|
AWG
|
American Wire Gauge
|
AXE 10
|
Series of electronic telephone exchanges from L.M. Ericsson
|
B2B
|
Business-to-Business
|
B2C
|
Business-to-Consumer
|
B8ZS
|
Binary Eight Zero Substitution
|
BACP
|
Bandwidth Allocation Control Protocol
|
BBS
|
Bulletin Board System
|
Bellcore
|
Bell Communications Research, Inc. (Now Telcordia)
|
BEP
|
Back-End Processor
|
BER
|
Bit Error Rate
|
BERT
|
Bit Error Rate Test (or Tester)
|
BIOS
|
Basic Input-Output System
|
B-ISDN
|
Broadband ISDN
|
BOC
|
Bell Operating Company (USA)
|
BONDING
|
Bandwidth On Demand Interoperability Group
|
bps
|
bits per second
|
BRI
|
Basic Rate Interface (ISDN)
|
BS
|
Base Station
|
BSC
|
Base Station Controller, or Binary Synchronous Communications (IBM)
|
BSS
|
Base Station Sub-system (GSM)
|
BSS
|
Business Support Systems
|
BTS
|
Base Transceiver Station
|
CAD
|
Computer-Aided Design
|
CAM
|
Computer-Aided Manufacturing
|
CAMEL
|
Customized Applications for Mobile-network Enhanced Logic (GSM/ETSI)
|
CAN
|
Campus Area Network
|
CANARIE
|
Canadian Network for Advancement of Research, Industry, Education
|
CAP
|
Competitive Access Provider
|
CAPS
|
Common ISDN API Service
|
CARS
|
Cable Antenna Relay Services
|
CASE
|
Computer-Aided Software Engineering
|
CATV
|
Cable Television or Community Antenna Television
|
CAVE
|
Cellular Authentication and Voice Encryption
|
CB
|
Citizens Band
|
CBR
|
Constant Bit Rate
|
CCC
|
Clear Channel Capability
|
CCCH
|
Common Control Channel
|
CCD
|
Charge Coupled Device
|
CCIR
|
Comité Consultatif International des Radiocommunications (now ITU-R)
|
CCITT
|
Comité Consultatif International des Télégraphes et Téléphones (now ITU-T)
|
CCR
|
Customer Controlled Reconfiguration
|
CCS
|
Common Channel Signaling
|
CCSS6
|
Common Channel Signaling System # 6
|
CD-R
|
Compact Disk-Recordable
|
CD-ROM
|
Compact Disk-Read-Only Memory
|
CDMA
|
Code Division Multiple Access
|
CDO
|
Community Dial Office
|
CDPD
|
Cellular Digital Packet Data
|
CDR
|
Call Detail Record
|
CENTREX
|
Central Office Exchange (PBX-like Service)
|
CEPT
|
Conference of European Posts and Telecommunications
|
CERN
|
Centre Européen de Recherche Nucléaire
|
CGSA
|
Cellular Geographic Service Areas
|
CIR
|
Committed Information Rate
|
CLASS
|
Custom Local Area Signaling Services
|
CLEC
|
Competitive Local Exchange Carrier
|
CLI
|
Calling Line Identification
|
CMA
|
Communications Management Association
|
CMIP
|
Common Management Information Protocol (ISO)
|
CMIS
|
Common Management Information Services (ISO)
|
CMISE
|
Common Management Information Service Element (ISO)
|
CMOS
|
Complementary Metal Oxide Semiconductors
|
CMRS
|
Commercial Mobile Radio Service
|
CNET
|
Centre National d'Études en Télécommunications (France Telecom)
|
CNI
|
Calling Number Identification
|
CO
|
Central Office
|
Codec
|
Coder/decoder
|
CON
|
Concentrator
|
COO
|
Cell of Origin
|
CORBA
|
Common Object Request Broker Architecture (OMG)
|
COT
|
Central Office Terminal
|
cPCI
|
Compact Peripheral Component Interconnect
|
CPE
|
Customer Premises Equipment
|
CPN
|
Cisco Powered Network (Ingredient Band)
|
CPP
|
Calling Party Pay
|
CPS
|
Cycles per second (Hertz)
|
CPU
|
Central Processing Unit
|
CRC
|
Cyclic Redundancy Check
|
CRM
|
Customer Relationship Management
|
CSA
|
Carrier Servicing Area
|
CSM
|
Communications Services Management
|
CSMA/CD
|
Carrier Sense Multiple Access with Collision Detection
|
CSR
|
Customer Service Representative
|
CSU
|
Channel Service Unit
|
CT
|
Cordless Telecommunications
|
CTI
|
Computer Telephony Integration
|
CTIA
|
Cellular Telecommunications Industry Association
|
Cu
|
Copper Local Loop
|
CUG
|
Closed User Groups
|
D-AMPS
|
Digital Advanced Mobile Phone Service
|
DA
|
Destination Address
|
DAP
|
Demand Access Protocol
|
DARPA
|
Defense Advanced Research Projects Agency
|
DAT
|
Digital Audio Tape
|
dB
|
deciBel
|
DBMS
|
Database Management System
|
DBS
|
Direct Broadcast Satellite
|
DCE
|
Data Communications Equipment, or Distributed Computing Environment
|
DCU
|
Distribution and Control Unit
|
DDD
|
Direct Distance Dialing
|
DDS
|
Dataphone Digital Service
|
DECT
|
Digital Enhanced (formerly, European) Cordless Telecommunication
|
DES
|
Data Encryption Standard
|
DLCS
|
Digital Loop Carrier System
|
DLL
|
Dynamic Link Library
|
DLU
|
Digital Line Unit
|
DM
|
Distributed Management
|
DME
|
Distributed Management Environment (OSF)
|
DMI
|
Distributed Management Interface
|
DMS
|
Digital Multiplex Switch (Nortel Networks Switching Product Family DMS 100, 200, …)
|
DMT
|
Discrete Multitone
|
DMTF
|
Desktop Management Task Force
|
DNA
|
Digital Network Architecture (Digital Equipment Corporation)
|
DNS
|
Domain Name Service DoD Department of Defense (USA)
|
DOS
|
Disk Operating System
|
DOV
|
Data Over Voice
|
DPCM
|
Differential Pulse Code Modulator
|
DS
|
Digital Service, Digital Signal
|
DS-0
|
Digital Signal, Level 0 (64 kbps)
|
DS-1
|
Digital Signal, Level 1 (1.544 Mbps)
|
DS-1C
|
Digital Signal, Level 1C (3.152 Mbps)
|
DS-2
|
Digital Signal, Level 2 (6.312 Mbps)
|
DS-3
|
Digital Signal, Level 3 (44.736 Mbps)
|
DS-4
|
Digital Signal, Level 4 (274.176 Mbps)
|
DSI
|
Digital Speech Interpolation
|
DSL
|
Digital Subscriber Line
|
DSP
|
Digital Signal Processor
|
DSS
|
Decision Support System
|
DSU
|
Digital Service Unit
|
DTAM
|
Document Transfer and Manipulation (ISO)
|
DTE
|
Data Terminal Equipment
|
DTMF
|
Dual-Tone MultiFrequency
|
DTU
|
Data Transfer Unit
|
DTV
|
Digital Television
|
DVB
|
Digital Video Broadcasting
|
DWDM
|
Dense Wavelength Division Multiplexing
|
DXI
|
Data Exchange Interface
|
E2E
|
End-to-End
|
E-911
|
Enhanced emergency telephone number (USA)
|
E&M
|
Ear and Mouth, or recEive and transMit (signaling)
|
E-TDMA
|
Expanded Time Division Multiple Access
|
EAI
|
Enterprise Application Integration
|
EBCDIC
|
Extended Binary Coded Decimal Interchange Code (IBM)
|
EC
|
European Community
|
ECMA
|
European Community Manufacturers Association
|
ECSA
|
Exchange Carrier Standards Association (now ATIS)
|
EDGE
|
Enhanced Data for GSM Evolution
|
EDI
|
Electronic Data Interchange
|
EEROM
|
Electronically Erasable Read-Only Memory
|
EF&I
|
Engineering, Furnishing and Installation
|
EFT
|
Electronic Funds Transfer
|
EHF
|
Extremely High Frequency (more than 30 GHz)
|
EIA
|
Electronic Industries Association
|
EIR
|
Equipment Identity Register
|
EISA
|
Extended Industry Standard Architecture
|
EMEA
|
Europe, Middle East & Africa (Business Region)
|
EML/EMS
|
Element Management Layer/ Element Management Service
|
EMS
|
Enhanced Messaging Services
|
ENS
|
Enhanced Network Services
|
EOT
|
End of Transmission
|
EPI
|
External Provisioning Interface
|
ERMES
|
European Radio Message System (standard for pagers)
|
ERP
|
Enterprise Resource Management
|
ESCON
|
Enterprise System Connection (IBM)
|
ESMR
|
Enhanced Specialized Mobile Radio
|
ETSI
|
European Telecommunications Standard Institute
|
EU
|
European Union
|
