Telecom Abbreviation List

No.AcronymFull Form
1GSM Global System for Mobile(Communication)
2GPRS General Packet Radio Service
3NAP Network Access Point
4ISD International Subscriber Dialing
5CDMA Code Division Multiple Access
6BSC Base Station Controller
7RFT Radio Frequency Transmitter
8GEO Geostationary Earth Orbit
9DSS Direct Satellite Services
10SDLC Synchronous Data Link Control
11IMSI International Mobile Subscriber Identity
12SMSC Gateway Mobile Switching Center
13DTA Data Transfer Adapter
14DTC Digital Traffic Channel
15IVRS Interactive Voice Response System
16CGSA Cellular Geographic Service Areas
17RNC Radio Network Controller
18NPDB Number Portability Database
19BFS Broadcast File System
20BGCF Breakout Gateway Control Function
21BGP Border Gateway Protocol
22BIU Broadband Interface Unit
23BRAS Broadband Remote Access Server
24BOPL Broadband Over Power Line
25BRI Brand Rating Index
26BRS Broadband Radio Service
27TMN Telecommunication Management Network
28UMTS Universal Mobile Telecommunications System
29FLAG Fiber Link Around the Globe
30VPS Voice Processing System
31DPCM Differential Pulse Code Modulator
32VMS Voice Mail System
33PAD Packet Assembler And Disassembler
34PCN Personal Communications Network
35VAC Voltage Alternating Current
36ATC Alarm Traffic Controller
37AFC Automatic Frequency Control
38PDC Personal Digital Cellular
39WAP Wireless Application Protocol
40WCDMA Wideband Code Division Multiple Access
41OMF Object Management Framework
42FM Frequency Modulation
43PCO Public Call Office
44FDM Frequency Division Modulation
45FSS Fixed Satellite Service
46LEO Low Earth Orbit
47MAP Mobile Application Part
48POTS Plain Old Telephone Service
49kHz kilohertz (thousand hertz)
50MHz Megahertz (million hertz)
51AVC Advanced Video Coding
52AVI Advanced Video Interface
53AWGN Additive White Gaussian Noise
54BDF Broadband Digital Forward
55BDR Baseband Digital Reverse
56BERT Bit Error Rate Test
57BMS Business Management System
58BPF Band-Pass Filter
59UPR User Performance Requirements
60GMRS General Mobile Radio Service
61SGSN Serving GPRS Support Node
62PDSN Packet Data Switched Network
63AUC Authentication Center
64PUK PIN Unblocking Key
65SIS Subscriber Identity Security
66SIM Subscriber Identity Module
67UMTS Universal Mobile Telecommunication System
68IMN Intelligent Mobile Network
69VLR Visitor Location Register
70BPI Baseline Privacy Interface
71DCF Dispersion Compensating Fiber
72DCR Digital Cable Ready
73CTO Chief Technology Officer
74ATM Asynchronous Transfer Mode
75ATM Automated Teller Machine
76DCP Device Control Protocol
77ACTS Advanced Communication Technology Satellite (NASA)
78CLASS Custom Local Area Signaling Services
79POC Point Of Contact
80DATE Duly Authorized Telecommunications Entity
81FOB Free On Board
82IFIntermediate Frequency
83BOD Bandwidth on Demand
84DID Direct Inward Dialing
85BOT Build Operate Transfer
86CAP Competitive Access Provider
87IN Intelligent Network
88CGI Common Gateway Interface
89FAT Factory Acceptance Test
90POM Project Office Manager
91POP Point of Presence
92COO Chief Operating Officer
93AMPS Advanced Mobile Phones System
94SDI Secure Digital Interface
95SRTP Secure Real-time Transport Protocol
96SSL Secure Sockets Layer
97TCAP Transaction Capabilities Application Part
98TCM Tandem Connection Monitoring
99UNI User Network Interface
100VPI Virtual Path Identifier
101WSS Wavelength Selective Switch
102VPLS Virtual Private LAN Service
103UPS Uninterruptible Power Supply
104TCO Total Cost of Ownership
105TCP Transmission Control Protocol
106SSM Source Specific Multicast
107SSMF Standard Single Mode Fiber
108SMF Single Mode Fiber
109SMS Service Management System
110SDMI Secure Digital Music Initiative
111SDP Session Description Protocol
112DBS Direct Broadcast Satellite
113DC Direct Current
114DCA Digital Cable Application
115CSS Content Scrambling System
116CSV Comma Separated Value
117BSS Business Support System
118TRAI Telecom Regulatory Authority Of India
119ASR Access Switch Router
120ASTB Advanced Set-Top Box
121BTS Business Telecom Services
122CORBA Common Object Request Broker Architecture
123COT Central Office Terminal
124CTAM Cable & Telecommunications Association for Marketing
125CTB Composite Triple Beat
126CTIA Cellular Telecommunications and Internet Association
127DCC Data Communication Channel
128DCD Downstream Channel Descriptor
129CEA Consumer Electronics Association
130CEP Cable Entry Point
131CIFS Common Internet File System
132CNR Carrier-to-Noise Ratio
133CSO Composite Second Order
134CSR Customer Service Representative
135COLD Central Office Layout Design
136COPS Common Open Policy Service
137CIM Common Information Model
138CIR Committed Information Rate
139CER Codeword Error Ratio
140CES Circuit Emulation Service
141ODA Outlet Digital Adapter
142ODRL Open Digital Rights Language
143CRL Certificate Revocation List
144CRM Customer Relationship Management
145ASIC Application-Specific Integrated Circuit
146ASM Asset Management System
147ASP Average Selling Price
148FSK Frequency Shift Keying
149FTMD Full Track Music Download
150CDR Call Detail Record
151CD-ROM Compact Disk-Read Only Memory
152CMTS Cable Modem Termination System
153OEM Original Equipment Manufacturer
154OEPL Optical Ethernet Private Line
155CMOS Complimentary Metal-Oxide Semiconductor
156CMS Call Management Server
157DMCA Digital Millennium Copyright Act
158DMH Degraded Modem Hours
159DSP Digital Signal Processor
160DSSS Direct Sequencing Spread Spectrum
161EAS Emergency Alert System
162ECR Efficient Consumer Response
163EPON Ethernet Passive Optical Network
164EPRI Electric Power Research Institute
165FCRC Fragment Cyclic Redundancy Check
166FDD Frequency Division Duplexed
167SDB Switched Digital Broadcast
168SDH Synchronous Digital Hierarchy
169SLIC Subscriber Line Interface Card
170SLM Signal Level Meter
171SRM System Resource Manager
172SRS Stimulated Raman Scattering
173SVOD Subscription Video on Demand
174SVP Secure Video Processor
175UGS Unsolicited Grant Service
176UHF Ultra High Frequency
177UMA Unlicensed Mobile Access
178UNE Unbundled Network Element
179VLAN Virtual Local Area Network
180VLL Virtual Leased Line
181WPE Wireless Plant Extension
182WRED Weighted Random Early Detection
183EPG Electronic Program Guide
184DSCP Differentiated Service Code Point
185DSL Digital Subscriber Line 
186DMA Designated Marketing Area
187DMC Dual Modem Cards
188DAS Direct Attached Storage
189DAT Digital Audio Tape
190DBPSK Differential Binary Phase Shift Keying
191CPE Customer Premises Equipment
192CRA Contention Resolution Algorithm
193ASCII American Standard Code for Information Interchange
194ASI Asynchronous Serial Interface
195BTSC Broadcast Television Systems Committee
196CAB Cable Advertising Bureau
197CAC Call Admission Control
198RAID Redundant Array of Inexpensive Disks
199RBOC Regional Bell Operating Company
200ROAP Rights Object Acquisition Protocol
201ROB Return on Bandwidth
202SPP Serial Port Profile
203SPTS Single Program Transport Stream
204STS Synchronous Transport Signal
205SUT System Under Test
206TSR Technical Service Representative
207TSS Telephony Switching Sub-System
208UCC Upstream Channel Change
209VER Virtual Ethernet Ring
210WPA Wireless (Wi-Fi) Protected Access
211WPAN Wireless Personal Area Network
212VPN Virtual Private Network
213VRF Virtual Routing and Forwarding
214VHF Very High Frequency
215VHS Video Home System
216PID Packet Identifier
217PKI Public Key Infrastructure
218PLC Packet Loss Concealment
219PVC Private Virtual Circuit
220PVR Personal Video Recorder
221QAM Quadrature Amplitude Modulation
222RKS Record Keeping Server
223RMS Root Mean Square
224RNOC Regional Network Operations Center
225SIP Session Initiation Protocol
226SLA Service Level Agreement
227SLC Shorten Last Codeword
228STM Synchronous Transport Module
229STP Spanning Tree Protocol
230WAN Wide Area Network
231WCD Wideband Channel Descriptor
232WCM Wideband Cable Modem
233EML Externally Modulated Laser
234EMM Entitlement Management Message
235EMS Element Management System
236DVR Digital Video Recorder
237DVS Digital Video Standard
238DWDM Dense Wavelength Division Multiplex
239CLV Consumer Lifetime Value
240CMLA Content Management License Administrator
241CCM Constant Coding and Modulation
242CCS Centum Call Seconds
243ATSC Advanced Television Systems Committee
244AUP Acceptable Use Policy
245CD Compact Disc
246CDC Connected Device Configuration
247LRU Least Recently Used
248LSB Least Significant Byte
249LCP Local Convergence Point
250LCS Line Code Signaling
251IAG Interactive Advertising Guidelines
252IAMS Intelligent Asset Management System
253HDT Host Digital Terminal
254HDTV High Definition Television
255HIT Headend Interface Terminal
256CSH Central Switch Homerun
257CLI Command Line Interface
258CLR Common Language Run-time
259ARIB Association of Radio Industries and Businesses
260ARIN American Registry of Internet Numbers
261PON Passive Optical Network
262POS Packet Over SONET
263PSP Packet Streaming Protocol
264PSQ Packet Streaming Queue
265PTS Program Transport Stream
266PVC Permanent Virtual Circuit
267RIN Relative Intensity Noise
268RIP Routing Information Protocol
269SPE Synchronous Payload Envelope
270SPM Self phase modulation
271STG Subscriber Telephony Gateway
272TRP Target Rating Points
273TSI Time Slot Interchange
274VCR Video Cassette Recorder
275VDC Volts Direct Current
276WLAN Wireless Local Area Network
277WME Wireless Media Extension
278PSI Program Specific Information
279PSIP Program and System Information Protocol
280RFP Request for Proposal
281RIAA Recording Industry Association of America
282SAW Surface Acoustic Wave
283SBC Switched Broadcast Client
284SBM Switched Broadcast Manager
285SNMP Simple Network Management Protocol
286SOA Semiconductor Optical Amplifier
287SOAP Simple Object Access Protocol
288TNCS Transmission Network Control System
289TRI Telephony Return Interface
290VCI Virtual Channel Identifier
291VCM Variable Coding and Modulation
292IPATInternet Protocol Access Terminal
293IPDR Internet Protocol Detail Record
294IPDT Internet Protocol Digital Terminal
295HSS Home Subscriber Server
296HTPC Home Theatre Personal Computer
297GSRM Global System Resource Manager
298GUI Graphical User Interface
299GVRP GARP VLAN Registration Protocol
300FCC Federal Communications Commission
301FCP Fiber Channel Protocol
302EPL Ethernet Private Line
303CSCF Call State Control Function
304DLNA Digital Living Network Alliance
305CPD Common Path Distortion
306DAC Digital Addressable Controller
307DARPA Defense Advanced Research Projects Agency
308CLE Customer Located Equipment
309CLEC Competitive Local Exchange Carrier
310CCI Content Control Information
311CCK Complimentary Code Keying
312ARCNET Attached Resource Computer Network
313ARF Advertising Research Foundation
314PBX Private Branch Exchange
315PCI Peripheral Connect Interface
316PCR Program Clock Reference
317PRM Polarization Recovery Module
318PRNG Pseudo Random Number Generators
319RFC Request for Comment
320SAP Service Access Point
321SARA Scientific-Atlanta Resident Application
322SATA Serial Advanced Technology Attachment
323SCP Service Control Platform
324SCR Silicon Controlled Rectifier
325SCSI Small Computer System Interface
326SHDB Switched High-definition Digital Broadcast
327SIC Standard Industrial Classification
328TELR Talker Echo Loudness Rating
329TKIP Temporal Key Integrity Protocol
330VBR Variable Bit Rate
331VCAT Virtual Concatenation
332VSAT Very Small Aperture Terminal
333VTS Video Transport Service
334HSD High Speed Data
335HSDPA High Speed Downlink Packet Access
336HSI High-Speed Internet
337GPS Global Positioning Satellite
338GRE Generic Routing Encapsulation
339GRM Global Resource Manager
340EIR Excess Information Rate
341EMI Electro-Magnetic Interference
342DRAM Dynamic Random-Access Memory
343DRM Digital Rights Management
344DSA Dynamic Service Addition
345DHWG Digital Home Working Group
346DLCI Data Link Connection Identifier
347DLL Data Link Layer
348CBT Computer Based Testing (or Training)
349CCDF Complementary Cumulative Distribution Function
350API Application Programming Interface
351APSK Amplitude Phase Shift Keying
352VAG Voice Access Gateway
353VBI Vertical Blanking Interval
354RTSP Real Time Streaming Protocol
355SAG Synthetic Analog Gateway
356SAN Storage Area Network
357PRBS Pseudo-Random Binary Sequence
358PRI Primary Rate Interface
359PBIA Personal Broadband Industry Association
360PBP Personal Basis Profile
361PBR Policy Based Routing
362NID Network Interface Device
363NIS Network Infrastructure Solutions
364MSC Mobile Switching Center
365MSPP Multi-Service Provisioning Platform
366MTA Multimedia Terminal Adapter
367MVNO Mobile Virtual Network Operator
368MDU Multiple Dwelling Unit
369MEMS Micro-Electro-Mechanical Systems
370LMP Link Management Protocol
371LOS Loss of Signal
372LPCM Linear Pulse Code Modulation
373OSC Optical Supervisory Channel
374OSI Open Systems Interconnect
375NTSC National Television System Committee
376NEMA National Electrical Manufactures Association
377NEMS Network Element Management System
378NGNA Next Generation Network Architecture
379MPLS Multi Protocol Label Switching
380MPTS Multiple Program Transport Stream
381MSB Most Significant Byte
382MDA Model Driven Architecture
383MDR Mobile Digital Recorder
384LMDS Local Multipoint Distribution Service
385LMI Link Management Interface
386LATA Local Access and Transport Area
387LCAS Link Capacity Adjustment Scheme
388NDVR Network Digital Video Recording
389NEBS Network Equipment Building System
390LED Light Emitting Diode
391LLC Logical Link Control
392ISTP Internet Signaling Transport Protocol
393HPNA Home Phoneline Networking Alliance
394HPOV Hewlett Packard Open View
395HQ High Quality
396HSA High Speed Access
397FSN Full Service Network
398FSO Free Space Optical
399FTP File Transfer Protocol
400EDGE Enhanced Data-Rates for Global Evolution
401EIA Electronics Industry Association
402DFB Distributed Feedback
403DHCP Dynamic Host Configuration Protocol
404DHEI Digi-Cable Headend Expansion Interface
405CATV Community Antenna Television
406CBRConstant Bit Rate
407ADSL Asymmetric Digital Subscriber Line
408AES Advanced Encryption Standard
409OMG Object Management Group
410ONDS Optical Node Distribution Switch
411ONT Optical Network Termination
412PESQ Perceptual Evaluation of Speech Quality
413PHS Payload Header Suppression
414RTP Real-time Transport Protocol
415RTPS Real Time Polling Service
416SCMS Serial Copy Management System
417SCO Synchronous Connection Oriented
418SES Severely Errored Seconds
419SGC Signaling Gateway Controller
420UTI Universal Transport Interface
421UTP Unshielded Twisted Pair-Cable
422VAD Voice Activity Detection
423WECA Wireless Ethernet Compatibility Alliance
424WEP Wired Equivalent Privacy
425AOD Advertising On Demand
426APD Avalanche Photo Diode
427PPT Power Passing Tap
428PPTP Point-to-Point Tunneling Protocol
429RCA Root Cause Analysis
430RDI Remote Defect Indicator
431ROI Return on Investment
432RTN Regional Transport Network
433RTOS Real Time Operating System
434SCM Stored Content Manager
435SDVOD Standard Definition Video-on-Demand
436RPD Return Path Demodulator
437RPM Revolutions Per Minute
438PPD Post-pickup Delay
439PPP Point-to-Point Protocol
440SMTP Simple Mail Transfer Protocol
441SNGSatellite News Gathering
442TDM Time Division Multiplexing
443TECTriggered Event Command
444VRTX Virtual Real-Time Extension
445SBS Switched Broadcast Server
446SBV Switched Broadcast Video
447VSA Vector Signal Analyzer
448USF Universal Service Fund
449USM User-based Security Model
450SDRAM Synchronous Direct Random-Access Memory
451SDTV Standard Definition Television
452RPR Resilient Packet Ring
453RTI Real Time Ingest
454PSQM Perceptual Speech Quality Measurement
455PSTNPublic Switched Telephone Network
456CWDM Coarse Wavelength Division Multiplexing
457CWM Common Warehouse Metamodel
458CLDC Connection Limited Device Configuration
459TIA Telecommunications Industry Association
460ACM Adaptive Coding and Modulation
461DENI Digital Entertainment Networking Initiative
462DES Data Encryption Standard
463DFAST Dynamic Feedback Arrangement Scrambling Technique
464ADI Asynchronous Digital Interface
465MIRS Motorola Integrated Radio system
466MTS Mobile Telephone Service
467ANF Aggregate Noise Factor
468ANSI American National Standards Institute
469CALEA Communications Assistance for Law Enforcement Act
470ISMS Integrated Service Management System
471ISO International Organization for Standardization
472LEC Local Exchange Carrier
473LVI Low Voltage Integrator
474MAC Media Access Control
475MCTF Motion Compensated Temporal Filtering
476MMI Man Machine Interface
477MPC Media Player Controller
478NDE Network Dimensioning Engine
479NDMH Non-Degraded Modem Hours
480NRSS National Renewable Security Standard
481NSI Network Side Interface
482NTS Near Term Storage
483OCSP Online Certificate Status Protocol
484OCST Office of Cable Signal Theft
485PMT Program Map Table
486POD Point of Deployment
487OSNR Optical Signal-to-Noise Ratio
488OSPF Open Shortest Path First
489OSS Operational Support System
490OLT Optical Line Terminal
491OMA Open Mobile Alliance
492ISV Independent Software Vendor
493ITA Interactive Television Association
494FLR Frame Loss Ratio
495FOSC Fiber Optic Splice Closure
496EDC Electronic Dispersion Compensator
497EDFA Erbium Doped Fiber Amplifier
498DPON Deep-fiber Passive Optical Network
499DPSK Differential Phase Shift Keying
500DPT Dynamic Packet Transport
501SCH Synchronization Channel
502SDMA Spatial Division Multiple Access
503MC Message Center
504MCS Multi Carrier Mode
505BTS Base Transceiver Station
506DAMPS Digital Advance Mobile Phone Service
507DTMF Dual Tone Multiple Frequency
508EIRP Equivalent Isotropic Radiated Power
509ESMR Enhanced Specialized Mobile Radio
510EVPL Ethernet Virtual Private Line
511FBI Federal Bureau of Investigation
512ATDMA Asynchronous Time Division Multiple Access
513ARP Address Resolution Protocol
514DVD Digital Versatile Disc
515DVI Display Visual Interface
516EVC Ethernet Virtual Circuit
517EVM Error Vector Magnitude
518FEC Forwarding Equivalence Class
519FHCS Fragment Header Check Sequence
520HDLC High-Level Data Link Control
521HDMI High Definition Multimedia Interface
522ILEC Incumbent Local Exchange Carrier
523IMD Inter-Modulation Distortion
524INA Interactive Network Adaptor
525ISA Industry Standard Architecture
526ISDN Integrated Services Digital Network
527ISM Industrial Scientific Medical
528IVR Interactive Voice Response
529KDCF Korea Digital Cable Forum
530LTS Long Term Storage
531NAT Network Address Translation
532NDA Non-Disclosure Agreement
533NOC Network Operations Center
534NPR Noise Power Ratio
535OUI Organizationally Unique Identifier
536PAT Program Association Table
537OFC Optical Fiber Communication
538PLT Power-Line Telecommunications
539PMD Polarization Mode Dispersion
540PCS Personal Communications System
541IRR Internal Rate of Return
542LSP Label Switched Path
543LSR Label Switch Router
544MHP Multimedia Home Platform
545MIB Management Information Base
546MIDP Mobile Information Device Profile
547NMS Network Management System
548PDA Personal Digital Assistant
549PDW Polarization Dependent Wavelength
550OTDR Optical Time Domain Reflectometer
551OTN Optical Transition Node
552NVM Non-Volatile Memory
553NNOC National Network Operations Center
554NNTP Network News Transfer Protocol
555LDAP Lightweight Directory Access Protocol
556LDP Label Distribution Protocol
557MEN Metro Ethernet Network
558NAPT Network Address and Protocol Translation
559NAS Network Attached Storage
560OEPLAN Optical Ethernet Private Local Area Network
561OEVPL Optical Ethernet Virtual Private Line
562NIU Network Interface Unit
563MER Modulation Error Ratio
564MGC Media Gateway Controller
565LDPC Low Density Parity Check
566LDS Local Digital Switch
567IGMP Internet Group Multicast Protocol
568IGP Interior Gateway Protocol
569IKE Internet Key Exchange
570HMS Headend Management System
571HOM High-Order Modulation
572FDDI Fiber Distributed Data Interface
573FEC Forward Error Correction
574ESC Embedded Signaling Channel
575ESP Encapsulating Security Payload
576ETSI European Telecommunications Standards Institute
577DUT Device Under Test
578DVB Digital Video Broadcast
579ASTD American Society for Training and Development
580ATA Advanced Technology Attachment
581ABSBH Average Busy Season Busy Hour
582ACAP Advanced Common Application Platform
583ACL Access Control List
584ACC Analog Control Channel
585APN Access Point Name
586SATCOM Satellite Communications
587TACS Total Access Communications Systems
588A/D Analog to Digital
589A/V Audio/Video
590AGC Automatic Gain Control
591AIS Alarm Indication Signal
592DCS Digital Cross-connect System
593DCT Digital Communications (Cable) Terminal
594DTCP Digital Transmission Content Protection
595DUN Dial-Up Networking
596ERIM Erasmus Research Institute of Management
597ERM Edge Resource Manager
598IDS Intrusion Detection System
599IDT Integrated Digital Terminal
600IEC International Electrotechnical Commission
601HDCP High-bandwidth Digital Content Protection
602HDD Hard Disk Drive
603ITU International Telecommunications Union
604IUC Interval Usage Code
605AMA Automatic Message Accounting
606AAC Advanced Audio Codec
607IPMP Intellectual Property Management and Protection
608DML Data Manipulation Language
609AACS Advanced Access Content System
610IPG Interactive Program Guide
611IANA Internet Assigned Numbers Authority
612ICB Independent Customer Builds
613GWC Gate-Way Controller
614HAN Home Area Network
615HCRP Hard Copy Cable Replacement
616IF Intermediate Frequency
617IFC Initial First Cost
618NASA National Aeronautics and Space Agency
619ROW Return Order Wire
620BW Bandwidth
621DCME Digital Compressed Multiplication Equipment
622BER Bit Error Rate
623ETACS Extended TACS
624IP Internet Protocol
625MIN Mobile Identification Number
626TDD Time Division Duplex
627TFT Thin Film Transistor
628HCS Header Check Sequence
629HD High Definition
630HDBH High-Day Busy Hour
631MTNL Mahanagar Telephone Nigam limited
632BSNL Bhrat Snchar Nigm Limited
633NTSC National Television Standards Committee
634NICNET National Informatics Centre Network
635LBS Location-Based Services
636LCD Liquid Crystal Display
637LMR Land Mobile Radio
638GMSK Gaussian Minimum Shift Keying
639IC Integrated Circuit
640GSN GPRS Support Node
641OC Optical Carrier
642PPDN Public Packet Data Network
643IPTA Internet Protocol Transport Agreement
644DPI Digital Program Insertion
645ICO Incumbent Cable Operator
646IDE Integrated Device Electronics
647IDEN Integrated Dispatch Enhanced Network
648IMEI International Mobile Equipment Identity
649IPTV Internet Protocol Television
650ICMP Internet Control Message Protocol
651DNS Domain Name System
652ETDMA Extended Time Division Multiple Access
653DNCS Digital Network Control System