USEFULL PABX TERMS

PABX: Private Automatic Branch Exchange

PBX: Private Branch Exchange

DTMF: Dual Tone Multi-Frequency

DP/PB: Dial Pulse/ Push Button

FXS: Foreign Exchange Subscriber

FXO: Foreign Exchange Office

ISDN: Integrated Services Digital Network

PRI: Primary Rate Interface

CAS: Channel Associated Signalling

MFC: Multi-Frequency Code

BRI: Basic Rate ISDN

E&M: Ear & Mouth

IPE: Intelligent Peripheral Equipment

IGM: Inter Group Module

ICB: Integrated Conference Bridge

PDU: Power Distribution Unit

MG: Module Group

MISC: Miscellaneous

PLO: Phase Lock Oscillator

TDS: Time Division Switch

TSW: Time Division Switch

CE: Common Equipment

ACD/UCD: Automatic Call Distribution/ Uniform Call Distribution

CC: Call Center/Contact Center

VoIP: Voice over Internet Protocol

SIP: Session Initiation Protocol

IAX: Inter-Asterisk eXchange

LD: Loop Down

RD: Ring Down

MDF: Main Distribution Frame

MDB: Main Distribution Board

DB: Distribution Board

IDF: Intermediate Distribution Frame

SDB: Sub Distribution Board