Telephony Acronym Glossary

ACD - Automatic Call Distributor
ADSL - Asymmetrical Digital Subscriber Line
ADPCM - Adaptive Differential Pulse Code Modulation
ADSI - Analogue Display Services Interface
API - Application Programming Interface
ASP - Application Service Provider
ASR - Automatic Speech Recognition
B2B - Business To Business
BRI - Basic Rate Interface
CAS - Channel Associated Signaling
CLEC - Competitive Local Exchange Carrier
CLI - Calling Line Identity
CMP - Computer Mediated Telephony
CPE - Customer Premises Equipment
CRM - Customer Relationship Management
CSI - Called Subscriber Identifier
CTI - Computer Telephony Integration
DASS2 - Digital Access Signaling System No.2
DDE - Dynamic Data Exchange
DDI - Direct Dialing Inward
DECT - Digital European Cordless Telecommunications
DID - Direct Inward Dialing
DNIS - Dialed Number Identification Service
DPNSS - Digital Private Network Signaling System
DRTV - Direct Response TV
DSL - Digital Subscriber Line
DSP - Digital Signal Processor
DTMF - Dual Tone Multi-Frequency
DTN - Deliver-To Number
E-1 - Digital Signaling Protocol
FoIP - Fax Over Internet Protocol
GUI - Graphical User Interface
ICT - Information Communications & Technology
IN - Intelligent Network
IP - Internet Protocol
IT - Information Technology
IPRS - International Premium Rate Service
ISA - Industry Standard Architecture
ISDN - Integrated Services Digital Network
ITSP - Internet Telephony Service Provider
IVR - Interactive Voice Response
LAN - Local Area Network
MF - Multi-Frequency
MVIP - Multi-Vendor Integration Protocol
NGN - Next Generation Network
NSP - Network Service Provider
NU - Number Un-obtainable
ODBC - Open DataBase Connectivity
PBX - Private Branch Exchange
PCM - Pulse Code Modulation
POTS - Plain Old Telephone Services
PRI - Primary Rate Interface
PRS - Premium Rate Service
PSB - Packet Switched Back plane
PSTN - Public Switched Telephone Network
Q-931 - ISDN Signaling Protocol
SAPI - Speech Application Programming Interface
SDSL - Symmetrical Digital Subscriber Line
SIR - Speaker Independent Recognition
SIT - Special Information Tone
SMS - Short Messaging Service
SONET - Synchronous Optical Network
SoHo - Small Office/Home Office
SS7 or C7 - Signaling Scheme No.7
SQL - Structured Query Language
T-1 - Digital Signaling Protocol
TAPI - Telephony Application Programming Interface
TCP/IP - Transmission Control Protocol/Internet Protocol
TSDP - Telephony Service Delivery Platform
TTS - Text-To-Speech
UFN - Universal Free phone Number
UM - Unified Messaging
VAR - Value Added Reseller
VOS - Voice Operated Switch
VoFR - Voice Over Frame Relay
VoIP - Voice Over Internet Protocol
VPN - Virtual Private Network
VRU - Voice Response Unit
VXML - Voice Extensible Markup Language
WAN - Wide Area Network
WAP - Wireless Application Protocol
WLAN - Wireless Local Area Network
WML - Wireless Markup Language