Most Commonly Used Telecom related full forms List

Acronym

Full Form

ADSL

Asymmetric Digital Subscriber Line

ATM 

Asynchronous Transfer Mode

BGP

Border Gateway Protocol

CRTC

Canadian Radio-Television & Telecommunications

CES

Carrier Ethernet Services

C/O

Central Office

CPU

Central Processing Unit

CoS

Class of Service

COAX

Coaxial Cable

Colo

Colocation

CLEC

Competitive Local Exchange Carrier

CPE

Customer Premise Equipment

Demarc 

Demarcation Point

DSL

Digital Subscriber Line

DIA

Direct Internet Access

DID

Direct Inward Dial

DDoS 

Distributed Denial of Service

EoA

Ethernet over ADSL

EoC

Ethernet over COAX

EPL

Ethernet Private Line

EVC

Ethernet Virtual Connection

EVPL

Ethernet Virtual Private Line

FOTB

Fibre Optic Termination Box

FTTB

Fibre To The Building

FTTN

Fibre To The Node/Neighbourhood

FD

Frame Delay

FDR

Frame Deviation Ration

FDV

Frame Deviation Value

GPON

Gigabit-capable Passive Optical Network

HPBX 

Hosted PBX

ILEC

Incumbent Local Exchange Carrier

IVR

Interactive Voice Response

L1

Layer 1

L2

Layer 2

L3

Layer 3

LAN

Local Area Network

LD

Long Distance

LTE

Long Term Evolution

MTTR

Mean Time to Repair

MAC 

Media Access Control

MAN

Metropolitan Area Network

MPLS

Multi-Protocol Label Switching

NID

Network Interface Device

NNI 

Network-to-Network Interface

PoP

Point of Peering

PSTN

Public Switched Telephone Network

P2P

Point to Point

PPPoE

Point to Point Protocol over Ethernet 

PRI

Primary Rate Interface

QoS

Quality of Service

RU

Rack Unit

SLA

Service Level Agreement

SIP

Session Initiation Protocol

SD-WAN

Software-Defined Wide Area Networking

TDM

Time Division Multiplexing

UCaaS

Unified Communications as a Service

UNI

User Network Interface

VM

Virtual Machines

VPN

Virtual Private Network

VoIP

Voice over IP

WAN

Wide Area Network

SDLC

Synchronous Data Link Control

4G

4th Generation

3G

3rd Generation

5G

5th Generation

2G

2nd Generation

IUC

Interconnect Usage Charge

TRAI

Telecom Regulatory Authority of India

OC

 Optical Carrier

RFT

Radio Frequency Transmitter

TMN 

Telecommunication Management Network

UMTS 

Universal Mobile Telecommunications System

AMPS

Advanced Mobile Phones System

GPS

Global Positioning System

IUC

Interconnect Usage Charge

IVR

Interactive Voice Response

Kbps

Kilobits per second

Mbps

Megabits per second

MAC

Media Access Control Address

OTP

One Time Password

RAM

Random Access Memory

SIM

subscriber identity module

BOD

Bandwidth on Demand

CAP

Competitive Access Provider

CLASS

Custom Local Area Signaling Services

COO

Chief Operating Officer

DATE

Duly Authorised Telecommunications Entity

DID

Direct Inward Dialing

FAT

Factory Acceptance Test

FLAG

Fibre Link Around the Globe

FOB

Free On Board

IF

 Intermediate Frequency

IN

Intelligent Network

LEO

Low Earth Orbit

MAP

Mobile Application Part Protocol

NAP

Network Access Point

POC

Point Of Contact

POP

 Point of Presence

POTS

Plain Old Telephone Service

RAM

Random Access Memory

ROM

Read Only Memory

ROW

Return Order Wire

SATCOM

Satellite Communications

TACS

Total Access Communications Systems

VAC

Voltage Alternating Current

BW

Bandwidth

CODEC

COder DECoder

DCME

Digital Compressed Multiplication Equipment

DP

Data Processing

DSS

Direct Satellite Services

DTH

Direct-to-Home

DTMF

Dual Tone Multiple Frequency

Hz

Hertz

kHz 

kilohertz (thousand hertz)

MHz

Megahertz (million hertz)

MiTTs 

Minutes of Telecommunications Traffic

SDLC

Synchronous Data Link Control

TMN

Telecommunication Management Network

A/D

Analog to Digital

A&T

Architecture & Transport

A/TT

Analog Tie Trunk

AAC

Advanced Audio Coding

AACCH

Auxiliary Analog Control Channel

AAL

ATM Adaptation Layer

AAL5-CU

ATM Adaptation Layer 5 Composite User

AASO

Advanced Audio Server Override

AASS

Advanced Audio Server Set

AAU

Advanced Audio Package

AAV

Authentication Algorithm Version

ABAC

Aggregate Bearer Admission Control

AbC

Approval by Correspondence

ABR

Average Bit Rate

ABT

Adaptive Block Transform

AC

Advisory Circular

ACA

Adaptive Channel Allocation

ACBO

Automatic Cross Band Operation

ACC

Analog Control Channel

ACCH

Associated Control Channel

ACD

Automatic Call Distribution

ACG

Automatic Code Gapping

AON

Active Optical Network

CDMA

Code Division Multiple Access

CIR

Committed Information Rate

CO

Central Office

CPE

Customer Premises Equipment

CPM

Cents per minute.

EUBA

Enhanced Unbundled Bitstream Service

FTTB 

Fibre To The Business

FTTH 

Fibre To The Home

FTTP

Fibre To The Premise

FTTC

Fibre To The Cabinet

FTTN

Fibre To The Node

GSM

Global System for Mobile communications

IMEI

International Mobile Equipment Identity

ISP

Internet Services Provider

ITU

International Telecommunication Union

LLU

Local Loop Unbundling

LMNP

Local and Mobile Number Portability

MDU

Multi-dwelling unit

MTAS

Mobile Termination Access Service

MUC

Multi Unit Complex

MUX

Multiplexor 

MVNO

Mobile Virtual Network Operator

ONT

Optical Network Terminal

PABX

Private Automatic Branch Exchange

POI

Point of Interconnect

RG

Residential Gateway

RSP

Retail Service Provider

SOHO

Small Office/Home Office.

STD

Standard Terms Determination

UFB

Ultra-Fast Broadband

UMTS

Universal Mobile Telecommunications System

WLAN

Wireless Local Area Network

WCDMA

Wideband Code Division Multiple Access