| S.No. | Short Form | Full Form | Country | Popularity |
| 1 |
CDMA |
Code Division Multiple Access |
Worldwide |
|
| 2 |
EPABX |
Electronic Private Automatic Branch Exchange |
India |
|
| 3 |
PBX |
Private Branch Exchange |
Worldwide |
|
| 4 |
EVDO |
EVolution-Data Optimized |
Worldwide |
|
| 5 |
FAX |
Facsimile |
Worldwide |
|
| 6 |
FDMA |
Frequency Division Multiple Access |
Worldwide |
|
| 7 |
FM |
Frequency Modulation |
Worldwide |
|
| 8 |
HSPA |
High Speed Packet Access |
Worldwide |
|
| 9 |
ISDN |
Integrated Services Digital Network |
Worldwide |
|
| 10 |
IVR |
Interactive Voice Response |
Worldwide |
|
| 11 |
OFC |
Optical Fiber Cable |
Worldwide |
|
| 12 |
REN |
Ringer Equivalence Number |
Worldwide |
|
| 13 |
RJ |
Registered Jack |
Worldwide |
|
| 14 |
RJ-11 |
Registered Jack type 11 |
Worldwide |
|
| 15 |
RJ-45 |
Registered Jack type 45 |
Worldwide |
|
| 16 |
SIM |
Subscriber Identity Module |
Worldwide |
|
| 17 |
SISO |
Single Input, Single Output |
Worldwide |
|
| 18 |
SMS |
Short Message Service |
Worldwide |
|
| 19 |
SOS |
Save Our Souls |
Worldwide |
|
| 20 |
UMS |
Unified Messaging System |
Worldwide |
|
| 21 |
VSAT |
Very Small Aperture Terminal |
Worldwide |
|
| 22 |
STD |
Subscriber Trunk Dialling |
United Kingdom |
|
| 23 |
DTMF |
Dual Tone Multi-Frequency |
Worldwide |
|
| 24 |
GPRS |
General Packet Radio Service |
Worldwide |
|
| 25 |
AT |
Attention |
Worldwide |
|
| 26 |
GSM |
Global System for Mobile Communications |
Worldwide |
|
| 27 |
MSC |
Mobile Switching Center |
Worldwide |
|
| 28 |
CUG |
Closed User Groups |
Worldwide |
|
| 29 |
IMS |
IP Multimedia Subsystem |
Worldwide |
|
| 30 |
PoP |
Point-of-Presence |
Worldwide |
|
| 31 |
TDMA |
Time division multiple access |
Worldwide |
|
| 32 |
UMTS |
Universal Mobile Telecommunications System |
Worldwide |
|
| 33 |
EDGE |
Enhanced Data rates for GSM Evolution |
Worldwide |
|
| 34 |
PTT |
Push-to-talk |
Worldwide |
|
| 35 |
WiMAX |
Worldwide Interoperability for Microwave Access |
Worldwide |
|
| 36 |
NFC |
Near Field Communication |
Worldwide |
|
| 37 |
Bluetooth |
from the epithet of the tenth-century king Harald “Bluetooth” |
Worldwide |
|
| 38 |
ISM |
Industrial, Scientific and Medical |
Worldwide |
|
| 39 |
IUC |
Interconnection Usage Charges |
India |
|
| 40 |
COM |
Component Object Model |
Worldwide |
|
| 41 |
OTA |
Over-the-air |
Worldwide |
|
| 42 |
MMS |
Multimedia Messaging Service |
Worldwide |
|
| 43 |
PCO |
Public Call Office |
Worldwide |
|
| 44 |
MBMS |
Multimedia Broadcast Multicast Services |
Worldwide |
|
| 45 |
MDG |
Mobile Data Gateway |
Worldwide |
|
| 46 |
CNG |
Comfort Noise Generator |
Worldwide |
|
| 47 |
SPP |
Serial Port Profile |
Worldwide |
|
| 48 |
STP |
Signal Transfer Point |
Worldwide |
|
| 49 |
NAV |
Network Allocation Vector |
Worldwide |
|
| 50 |
EDR |
Enhanced Data Rate |
Worldwide |
|
| 51 |
PCS |
Personal Communication Services |
Worldwide |
|
| 52 |
DTH |
Direct To Home |
Worldwide |
|
| 53 |
AMPS |
Advanced Mobile Phone System |
Worldwide |
|
| 54 |
NMT |
Nordic Mobile Telephony |
Worldwide |
|
| 55 |
TACS |
Total Access Communication System |
Worldwide |
|
| 56 |
LTE |
Long Term Evolution |
Worldwide |
|
| 57 |
NOC |
Network Operations Center |
Worldwide |
|
| 58 |
CAD |
Cisco Agent Desktop |
Worldwide |
|
| 59 |
SSB |
Single Side Band |
Worldwide |
|
| 60 |
SID |
System Identification Number |
Worldwide |
|
| 61 |
JDC |
Japanese Digital Cellular |
Japan |
|
| 62 |
SPDIF |
Sony-Philips Digital Interconnect Format |
Worldwide |
|
| 63 |
TOSLink |
Toshiba-Link |
Worldwide |
|
| 64 |
GPON |
Gigabit Passive Optical Network |
Worldwide |
|
| 65 |
A2DP |
Advanced Audio Distribution Profile |
Worldwide |
|
| 66 |
PSTN |
Public Switched Telephone Network |
Worldwide |
|
| 67 |
DSL |
Digital Subscriber Line |
Worldwide |
|
| 68 |
PSK |
Phase Shift Keying |
Worldwide |
|
| 69 |
SAI |
Serving Area Interface |
Worldwide |
|
| 70 |
ATA |
Analog Telephone Adapter |
Worldwide |
|
| 71 |
ICW |
Internet Call Waiting |
Worldwide |
|
| 72 |
HSDPA |
High Speed Downlink Packet Access |
Worldwide |
|
| 73 |
TSI |
Time Slot Interchange |
Worldwide |
|
| 74 |
HSUPA |
High-Speed Uplink Packet Access |
Worldwide |
|
| 75 |
SIO |
Serial Input/Output |
Worldwide |
|
| 76 |
WLL |
Wireless Local Loop |
Worldwide |
|
| 77 |
3G |
Third Generation |
Worldwide |
|
| 78 |
2G |
Second- Generation |
Worldwide |
|
| 79 |
UIM |
User Identity Module |
Worldwide |
|
| 80 |
RUIM |
Removable User Identity Module |
Worldwide |
|
| 81 |
INTERCOM |
Intercommunication |
Worldwide |
|
| 82 |
IVRS |
Interactive Voice Response System |
Worldwide |
|
| 83 |
UPC |
Uplink Power Control |
Worldwide |
|
| 84 |
WCDMA |
Wideband Code Division Multiple Access |
Worldwide |
|
| 85 |
P2P |
Point-to-Point |
Worldwide |
|
| 86 |
DAB |
Digital Audio Broadcasting |
Worldwide |
|
| 87 |
WATS |
Wide Area Telephone Service |
Worldwide |
|
| 88 |
KSU |
Key Service Unit |
Worldwide |
|
| 89 |
IMSI |
International Mobile Subscriber Identity |
Worldwide |
|
| 90 |
CPM |
Continuous Phase Modulation |
Worldwide |
|
| 91 |
RABMN |
Remote Area Business Message Network |
India |
|
| 92 |
VRS |
Video Relay Service |
Worldwide |
|
| 93 |
VMS |
Voice Mail System |
Worldwide |
|
| 94 |
CO |
Central Office |
United States |
|
| 95 |
SMR |
Specialized Mobile Radio |
Worldwide |
|
| 96 |
EOT |
End Of Transmission |
Worldwide |
|
| 97 |
ANI |
Automatic Number Identification |
Worldwide |
|
| 98 |
SIT |
Special Information Tone |
Worldwide |
|
| 99 |
CAM |
Conditional Access Module |
Worldwide |
|
| 100 |
UTRAN |
UMTS Terrestrial Radio Access Network |
Worldwide |
|
| 101 |
SWAN |
State Wide Area Network |
India |
|
| 102 |
MITs |
Mobile Intelligent Terminals |
Worldwide |
|
| 103 |
SMSC |
Short Message Service Center |
Worldwide |
|
| 104 |
ADR |
Astra Digital Radio |
Worldwide |
|
| 105 |
MTBF |
Mark Time Between Frames |
Worldwide |
|
| 106 |
PRN |
Packet Radio Network |
Worldwide |
|
| 107 |
LTC |
Longitudinal Time Code |
Worldwide |
|
| 108 |
CID |
Caller ID |
Worldwide |
|
| 109 |
4G |
Fourth Generation |
Worldwide |
|
| 110 |
IM |
Intensity Modulation |
Worldwide |
|
| 111 |
NRI |
Network Resource Identifier |
Worldwide |
|
| 112 |
FCA |
Fixed Channel Allocation |
Worldwide |
|
| 113 |
LJU |
Line Jack Unit |
Worldwide |
|
| 114 |
OBD |
Outbound Dialler |
Worldwide |
|
| 115 |
CLI |
Caller Line Identity |
Worldwide |
|
| 116 |
ASR |
Answer Seizure Ratio |
Worldwide |
|
| 117 |
NoTA |
Network on Terminal Architecture |
Worldwide |
|
| 118 |
RADA |
Random Access Discrete Address |
Worldwide |
|
| 119 |
PUC |
Personal Unblocking Code |
Worldwide |
|
| 120 |
PDN |
Public Data Network |
Worldwide |
|
| 121 |
PDN |
Packet Data Network |
Worldwide |
|
| 122 |
ESS |
Electronic Switching System |
Worldwide |
|
| 123 |
POTS |
Plain Old Telephone Service |
Worldwide |
|
| 124 |
FXO |
Foreign eXchange Office |
Worldwide |
|
| 125 |
NANP |
North American Numbering Plan |
United States |
|
| 126 |
PRI |
Primary Rate Interface |
Worldwide |
|
| 127 |
TRS |
Telecommunications Relay Service |
Worldwide |
|
| 128 |
RIL |
Radio Interface Layer |
Worldwide |
|
| 129 |
SAE |
System Architecture Evolution |
Worldwide |
|
| 130 |
ALS |
Alternate Line Service |
Worldwide |
|
| 131 |
PCM |
Pulse code Modulation |
Worldwide |
|
| 132 |
xDSL |
X (any type of) Digital Subscriber Line |
Worldwide |
|
| 133 |
SS7 |
Signaling System 7 |
Worldwide |
|
| 134 |
PUK |
Personal Unblocking Key |
Worldwide |
|
| 135 |
TIMSI |
Temporary International Mobile Subscriber Identity |
Worldwide |
|
| 136 |
AWS |
Advanced Wireless Service |
Worldwide |
|
| 137 |
FR |
Full Rate |
Worldwide |
|
| 138 |
CDM |
Code Division Multiplexing |
Worldwide |
|
| 139 |
TAM |
Telecom Application Map |
Worldwide |
|
| 140 |
MVNO |
Mobile Virtual Network Operator |
Worldwide |
|
| 141 |
MBC |
Meteor Burst Communications |
Worldwide |
|
| 142 |
FPS |
Fast Packet Switching |
Worldwide |
|
| 143 |
TTE |
Telecommunications Terminal Equipment |
Worldwide |
|
| 144 |
TTE |
Through-The-Earth |
Worldwide |
|
| 145 |
AMTS |
Advanced Mobile Telephone System |
Worldwide |
|
| 146 |
AMTS |
Automated Maritime Telecommunications System |
United States |
|
| 147 |
IIN |
Interferometric Intensity Noise |
Worldwide |
|
| 148 |
SLR |
Sending Loudness Rating |
Worldwide |
|
| 149 |
BS |
Base Station |
Worldwide |
|
| 150 |
USIM |
User Services Identity Module |
Worldwide |
|
| 151 |
ADM |
Add-Drop Multiplexer |
Worldwide |
|
| 152 |
CN |
Core Network |
Worldwide |
|
| 153 |
MIMO |
Multiple Input Multiple Output |
Worldwide |
|
| 154 |
CDR |
Call Detail Record |
Worldwide |
|
| 155 |
CDR |
Committed Data Rate |
Worldwide |
|
| 156 |
DBA |
Dynamic Bandwidth Allocation |
Worldwide |
|
| 157 |
UNII |
Unlicensed National Information Infrastructure |
Worldwide |
|
| 158 |
PP |
Point-to-Point |
Worldwide |
|
| 159 |
eSIM |
embedded SIM |
Worldwide |
|
| 160 |
MCLR |
Maximum Cell Loss Ratio |
Worldwide |
|
| 161 |
SVD |
Simultaneous Voice and Data |
Worldwide |
|
| 162 |
MCR |
Master Control Room |
Worldwide |
|
| 163 |
VoLTE |
Voice over Long Term Evolution |
Worldwide |
|
| 164 |
Telecom |
Telecommunications |
Worldwide |
|
| 165 |
SSN |
SIM Serial Number |
Worldwide |
|
| 166 |
MGC |
Media Gateway Controller |
Worldwide |
|
| 167 |
AVRCP |
Audio/Video Remote Control Profile |
Worldwide |
|
| 168 |
ERP |
Effective Radiated Power |
Worldwide |
|
| 169 |
MPH |
Mobile Pedestrian Handheld |
Worldwide |
|
| 170 |
PDP |
Packet Data Protocol |
Worldwide |
|
| 171 |
UARFCN |
UTRA Absolute Radio Frequency Channel Number |
Worldwide |
|
| 172 |
ARFCN |
Absolute Radio Frequency Channel Number |
Worldwide |
|
| 173 |
EARFCN |
E-UTRA Absolute Radio Frequency Channel Number |
Worldwide |
|
| 174 |
PDC |
Personal Digital Cellular |
Japan |
|
| 175 |
CES |
Circuit Emulation Service |
Worldwide |
|
| 176 |
VTU |
Video Teleconferencing Unit |
Worldwide |
|
| 177 |
MDF |
Main Distribution Frame |
Worldwide |
|
| 178 |
OFC |
Open Fiber Control |
Worldwide |
|
| 179 |
OFC |
Optical Fiber Conductive |
Worldwide |
|
| 180 |
DBS |
Direct Broadcast Satellite |
Worldwide |
|
| 181 |
FOC |
Fiber Optic Cable |
Worldwide |
|
| 182 |
UI |
Unit Interval |
Worldwide |
|
| 183 |
GT |
Global Title |
Worldwide |
|