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Computing & IT
>> Telecom Abbreviations
Look through 4999 acronyms and abbreviations related to Telecom:
XFMR
— Transformer
IPB
— Invision Power Board
DDRS
— Dynamic Data Rate Selection
LAN
— Local Area Network
EDD
— Earliest Due Date
CBCU
— Centralized Broadband Control Unit
EBITDA
— Earnings before Interest, Taxes, Depreciation and Amortization
DCE
— Data Circuit-terminating Equipment
YTD
— Year To Date
YMMV
— Your Mileage May Vary
ETA
— Estimated Time of Arrival
URL
— Universal Resource Locator
XML
— Extensible Markup Language
ECG
— Electrocardiogram
DWDM
— Dense Wavelength Division Multiplexing
OIC
— Oh I See
DOE
— Distributed Object Environment
GFSK
— Gaussian Frequency Shift Keying
BRDF
— Bidirectional Reflectance Distribution Function
C3I
— Command, Control, Communications & Intelligence
CSR
— Customer Service Representative
DND
— Do Not Disturb
APR
— Annual Percentage Rate
SYN
— Synchronous
CT
— Computed Tomography
CSMA/CA
— Carrier Sense Multiple Access/Collision Avoidance
ROM
— Read-Only Memory
RDF
— Resource Description Framework
FTP
— File Transfer Protocol
LASER
— Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
YGWYPF
— You Get What You Pay For
CSMA/CD
— Carrier Sense Multiple Access with Collision Detection
IQ
— Intelligence Quotient
IAMAI
— Internet and Mobile Association of India
ISAR
— Inverse Synthetic-Aperture Radar
ATOM
— Any Transport over MPLS (Multi-Protocol Label Switching)
ANSI
— American National Standards Institute, Inc.
UK
— United Kingdom of Great Britain and Northern Ireland
BBS
— Bulletin Board Service
NB
— Nota Bene. Abbreviation of the Latin expression commonly used to emphasise the importance of a statement, literally meaning 'observe well'. Or less politely and more amusingly, No Bullshit.
ATM
— Automatic Teller Machine
THX
— Thanks
ASAP
— As Soon As Possible (pronounced AY-sap)
CCTV
— Closed-circuit television
LED
— Light-Emitting Diode
OEM
— Original Equipment Manufacturer (usually in reference to car parts)
BTW
— By The Way
X-BAR
— Crossbar telephone exchange
IT
— Information Technology
CSMA/CD
— Carrier sense multiple access / collision detection
CONG
— Congestion message
RAEX
— Roaming Agreement EXchange
BPM
— Beats Per Minute
POC
— Point Of Contact
MAN
— Metropolitan Area Network
CSMA
— Carrier Sense Multiple Access
PPM
— parts per million
S X S
— Step-by-Step
S-BCCH
— Short Message Service Broadcast Control Channel
ISO
— In Search Of
FDIC
— Federal Deposit Insurance Corporation
XA-FR
— Exchange Access Frame Relay
CPU
— Central Processing Unit
TEMIP
— Telecommunications Management Information Platform
SD
— Standard Deviation
UAX 14
— Unit Automatic eXchange type 14
CPE
— Customer Premises Equipment
X-OFF
— Transmitter Off
C4I
— Command, Control, Communications, Computers, & Intelligence
IRC
— Internet Relay Chat
EPA
— Environmental Protection Agency (US)
X-ON
— Transmitter On
C-NBAP
— Common Node B Application Part
A-KEY
— Authentication key
B-ICI
— Broadband Inter-Carrier Interface
WACN ID
— Wide Area Communications Network IDentifier
E-LEAD
— Ear Lead
P&L
— Profit and Loss statement
COB
— close of business (End of duty day)
MLS
— Microwave Landing System
FIFO
— First In, First Out
ZDBOP
— Ziff-Davis Benchmark Operation
PDF
— Portable Document Format (created by Adobe Acrobat)
OC-256
— Optical Carrier Signal, Level 256
NMSE
— Normalized Mean Square Error
I.LINK
— IEEE 1394, High Performance Serial Bus, implementation
LLC
— Limited Liability Company
SABGW
— System Architecture Evolution Gateway
FEMA
— Federal Emergency Management Agency
ECU
— Electronic Control Unit
PDR
— Preliminary Design Review
T-IC
— T-interConnect
QC
— Quality Control
DAM
— Diagnostic Acceptability Measure
M-CSI
— Mobility management CAMEL (Customized Applications for Mobile network Enhanced Logic) Subscription Information
UR
— Your
VIP
— Very Important Person
CDR
— Critical Design Review
D-NBAP
— Dedicated Node B Application Part
IP
— Internet Protocol
RFP
— Request For Proposal
OC-9
— Optical Carrier Signal, Level 9
LRU
— Line Replaceable Unit
F2F
— Face To Face (also Meeting In Person)
CU
— See You
RFQ
— Request For Quotation
PO
— Purchase Order
OC-18
— Optical Carrier Signal, Level 18
ISO
— International Organization for Standardization
RTN
— Regional Telecommunication Network
AUP
— Acceptable Use Policy
H323
— ANSI standard for format over IP
DAHDI
— Digium/Asterisk Hardware Device Interface
EAP
— Employee Assistance Program
T-CARRIER
— Trunk Carrier
PDT
— Pacific Daylight Time
VC-ATOD
— Virtual Clearinghouse on Alcohol, Tobacco and Other Drugs
ASTM
— American Society for Testing and Materials (Philadelphia, Pennsylvania)
CR
— Carriage Return
WTG
— Way To Go
CY
— Calendar Year
ADM
— Add-Drop Multiplexer
RF
— Radio Frequency
D-H
— Diffie-Hellman
ATTN
— Attention
EDI
— Electronic Data Interchange
KBYTE
— Kilobyte (103)
IRR
— Internal Rate of Return
GSM
— Global System for Mobile Communications
CV
— Curriculum Vitae
ISP
— Internet Service Provider
VAZO
— Violating All-Zero Octet
ACH
— Automated Clearing House
CEO
— Chief Executive Officer
LCD
— Liquid Crystal Display
C³CM
— Command, Control and Communications Countermeasures
CCB
— Change Control Board
FET
— Field Effect Transistor
ATM
— Asynchronous Transfer Mode
DSC
— Differential Scanning Calorimetry
DBORS
— Data Base of Records
QFSK
— Quadrature Frequency Shift Keying
AC
— Alternating Current
AFAIK
— As Far As I Know
IPO
— Initial Public Offering
WBS
— Work Breakdown Structure
MOU
— Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
DWDM
— Dense Wavelength-Division Multiplexing
GUI
— Graphical User Interface (goo-ey)
TQM
— Total Quality Management
RDY
— Ready
BRB
— Be right back
VAT
— Value Added Tax
BTU
— British Thermal Unit
WWW
— World Wide Web
WB
— Welcome Back
EST
— Eastern Standard Time
AMD
— Advanced Micro Devices, Inc. (producer of computer chips)
ADSL
— Asymmetric Digital Subscriber Line
API
— Application Programming Interface
ABC
— activity based costing
ASCII
— American National Standard Code for Information Interchange
SMTP
— Simple Mail Transfer Protocol
R&D
— Research & Development
CUG
— Closed User Group
GIS
— Geographic Information System
WML
— Wireless Markup Language
CSA
— Canadian Space Agency
MTBF
— Mean Time Before Failure
SLA
— Service Level Agreement
ABI
— Application Binary Interface
IRL
— In Real Life
AIR
— Account Information and Refill
DOA
— dead on arrival
SAR
— Search And Rescue
PDA
— Personal Digital Assistant
PUHU
— Pick Up Hang Up
ICT
— Information and Communication Technology
ASME
— American Society of Mechanical Engineers
EDS
— Electronic Data Systems Corporation
SME
— Subject Matter Expert
ASA
— American Standards Association
SRAM
— Static Random Access Memory (ess-ram)
AOL
— America on line
DAC
— Discretionary Access Control
RPI
— Retail Price Index
COR
— Carrier Operated Relay
MOB
— Mobile
RQMT
— Requirement
ESA
— European Space Agency
BVR
— Beyond Visual Range
TNYWR
— The Number You Will Receive
NYSE
— New York Stock Exchange
MRI
— Magnetic Resonance Imaging
UDP
— User Datagram Protocol (FDDI related)
EIS
— Executive Information System
O&M
— Operation and Maintenance
ATA
— Area Transportation Authority
PVT
— Private
VPN
— Virtual Private Network (ATM)
GATT
— General Agreement on Tariffs and Trade (government)
HTTP
— Hypertext Transfer Protocol
GPS
— Global Positioning System (ex-NAVSTAR)
FAQ
— Frequently Asked Questions (sometimes Pronounced Fak)
CD
— Compact Disc
EOM
— End Of Message
CGI
— Common Gateway Interface
ACE
— Access Control Entry
NPV
— Net Present Value {economics}
RPM
— Revolutions Per Minute, (Rotations Per Minute)
JV
— Joint Venture
PCB
— printed circuit board
EU
— European Union (1994; formerly referred to as the EEC or EC)
CIO
— Chief Information Officer
ARPA
— Advanced Research Projects Agency (made early internet)
MIS
— Management Information System (OSHA)
NPI
— New Product Introduction
AM
— Ante Meridian
DFD
— Displaced Frame Difference
POS
— Point Of Sale.Retail term, being the physical point at which products are displayed on shelves or paid for at the checkout, as in the EPOS acronym.
SAN
— Storage Area Network
CB
— Call Back
DBMS
— Database Management System
CAE
— Computer-Aided Engineering
NFS
— Network File System
CPM
— Critical Path Method
ATCRBS
— Air Traffic Control Radar Beacon System
IVR
— Interactive Voice Response (telephone technology)
ACK
— ACKnowledgment
MST
— Mountain Standard Time
RAM
— random-access memory
DOD
— United States Department of Defense
MBR
— Master Boot Record
CRT
— Cathode Ray Tube (type of TV)
RFC
— Request For Comment
RFI
— Request For Information. Sales department shorthand. Special priority when use in conjunction with RFN (see below).
EVP
— Executive Vice President
FAA
— Federal Aviation Administration
WWW3
— World Wide Web Consortium
QMS
— Quality Management System
BFI
— Brute Force and Ignorance. An expression found in everyday language since the early 1900s, meaning a heavy handed unrefined solution to a problem (especially fixing something - like bashing an electrical appliance to get it working again). In more recent
CCSDS
— Consultative/Consultative Committee for Space Data Systems
TBD
— To Be Determined
ACC
— Adaptive Cruise Control
AIS
— Automated Information System
COO
— Chief Operation Officer
NOS
— Network Operating System
FX
— Foreign Exchange
CCM
— counter-countermeasure
SDMA
— Space Division Multiple Access
AES
— Advanced Encryption Standard
SDR
— Special Drawing Rights
ACK
— Acknowledge (telecommunications; Cf. NAK)
AM
— Amplitude Modulation
TTYL
— Talk To You Later (Internet Slang)
PDH
— Plesiochronous Digital Hierarchy
WDM
— Wavelength Division Multiplexing (fiber optics)
PSK
— phase-shift keying
CPT
— Carriage Paid To
EC
— European Commission
AE
— Account Executive
FIPS
— Federal Information Processing Standard
CIS
— Commonwealth of Independent States
DES
— Data Encryption Standard
RDBMS
— Relational Database Management System
IETF
— Internet Engineering Task Force
VM
— Voice Mail
MB
— Megabyte
ADD
— Addendum
JIT
— Just in time
DSS
— Decision Support System
PGP
— Pretty Good Privacy (encryption)
WAN
— Wide Area Network
WEP
— Wired Equivalent Privacy
SOW
— Statement Of Work
DSCP
— Differentiated Services Control Point
PDN
— Public Data Network
DRAM
— Dynamic Random Access Memory (dee-ram) (computing)
LRJ
— Location Reject
QOS
— Quality of Service
CIR
— Committed Information Rate (Frame Relay)
SWAG
— Scientific Wild Ass Guess
GPRS
— General Packet Radio Service
SLIP
— Serial Line Interface Protocol
CBT
— Computer Based Training
BIP
— Bit-Interleaved Parity
MDF
— Main Distribution Frame
ACM
— Association for Computing Machinery
CAD
— Computer Aided Designer
VVX
— Voice and Video eXchange
Q&A
— Question & Answer
DB
— Decibel
NATO
— North Atlantic Treaty Organisation
WWW
— World Weather Watch
MTTR
— Mean Time To Repair
SCC
— Standards Council of Canada
EEC
— European Economic Community (predecessor of the European Union|EU)
AATSR
— Advanced Along-Track Scanning Radiometer
FM
— frequency modulation
APT
— Automatic Picture Transmission
SQA
— Software Quality Assurance
BUR
— Bandwidth Usage Redundancy
AGC
— Automatic Gain Control
RM
— Regional Manager
QA
— Center for Quality Assurance in International Education
BSD
— Berkeley Software Distribution
DNS
— Domain Name System
CRM
— Customer Relationship Management
POP
— Point Of Presence (Internet)
DARPA
— Defense Advanced Research Projects Agency (US)
CS
— Computer Science
AOA
— Angle Of Arrival
MMS
— Multimedia Messaging Service
DHCP
— Dynamic Host Configuration Protocol
OCR
— Optical Character Recognition
DDD
— Direct Distance Dial
ADR
— Address
UPS
— Ultraviolet Photoelectron Spectroscopy
GSA
— U.S. General Services Administration
SDD
— Software Design Document
ROI
— Return on Investment
ENIAC
— Electronic Numerical Integrator And Computer
ALC
— Automatic Level Control
PNG
— Portable Network Graphics (graphic file standard/extension)
MSN
— Microsoft Network
SAS
— Statistical Analysis System
NIC
— Network Interface Card
ACL
— Access Control List
NIH
— Not Invented Here
TNX
— Thanks
AME
— Amplitude Modulation Equivalent
ABET
— Accreditation Board for Engineering and Technology, Inc.
ACE
— Advanced Computing Environment
HVAC
— Heating, Ventilation, and Air Conditioning
IRS
— U.S. Internal Revenue Service
RWR
— Radar Warning Receiver
AAC
— Advanced Audio Coding
TCO
— Total Cost of Ownership
UAV
— Unmanned Aerial Vehicle
SCSI
— Small Computer System Interface
BCC
— Blind Carbon Copy
ISDN
— Integrated Services Digital Network
PRI
— Primary Rate Interface (ISDN)
ATC
— Air traffic control
DSA
— Digital Signature Algorithm
BR
— Branch
DOJ
— Department of Justice (US)
CDT
— Central Daylight Time
EBCDIC
— Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD)
SIC
— Standard Industrial Classification (Code)
Y2K
— Year 2000
CC
— Carbon Copy
ECO
— Engineering Change Order
CTD
— Cumulative Trauma Disorder
TNSTAAFL
— There's No Such Thing As A Free Lunch
FAR
— Federal Aviation Regulation
PM
— Preventive Maintenance
CAM
— computer aided manufacturing
STS
— Space Transportation System
ACD
— Automatic Call Distributor
DMSP
— Defense Meteorological Satellite Program (U.S.)
100BASE-T2
— 100 Megabits per Second, Baseband, Two-pair Category 3 UTP cables
VHF
— Very High Frequency
DDL
— Data Definition Language
FFT
— Fast Fourier Transform
CFO
— Communication Filing Officer
ADM
— Add/Drop Multiplexer
RDP
— Radar Data Processing
NEC
— National Electrical Code
PC
— Personal computer (host)
AES
— Auger Electron Spectroscopy
OBO
— Or Best Offer
DNS
— Domain Name Service
DSL
— Digital Subscriber Line
RAID
— Redundant Array of Inexpensive Disks
BPS
— bits per second
SBU
— Strategic Business Units
DME
— Distance Measuring Equipment
DC
— Direct Current
EDVAC
— Electronic Discrete Variable Automatic Computer
BBS
— Bulletin Board System
ADPE
— Automatic Data Processing Equipment
CST
— Central Standard Time (UTC-6 Hours)
VIRUS
— Vital Information Resources Under Siege
NIST
— National Institute of Standards and Technology
AQL
— Acceptable Quality Level
RNC
— Radio Network Controller
JAXA
— Japan Aerospace Exploration Agency
EDT
— Eastern Daylight Time
EFF
— Electronic Frontier Foundation
AD
— Active Directory
DTE
— Data Terminal Equipment
CMS
— Content Management System
EMG
— Electromyogram
PERT
— Program Evaluation and Review Technique
ACO
— Additional Call Offering
CDR
— Call-Detail Record
EFT
— Electronic Funds Transfer
ASP
— Application Service Provider
ABR
— Available Bit Rate
CMM
— Capability Maturity Model
DLR
— Design Layout Record
ROFL
— Rolling on the floor laughing
CU
— Control Unit
BST
— British Summer Time
ERP
— Enterprise Resource Planning
DLL
— Dynamic Link Library (computer file)
OMG
— Object Management Group
LEO
— Low Earth Orbit (satellite communications)
AAAI
— American Association for Artificial Intelligence's
CAUCE
— Coalition Against Unsolicited Commercial Email
UI
— User Interface
LED
— law enforcement desk; light emitting diode
AC
— Access Control
ASR
— Airport Surveillance Radar
EW
— Electronic Warfare
UTC
— Coordinated Universal Time
IM
— Instant Message
DFS
— Distributed File System
RPM
— Resale Price Maintenance. The UK Net Book Agreement, as was. Means by which retail prices are controlled by primary suppliers. (Alternatively, Revolutions Per Minute, as in engine speed and 78, 33 and 45 records. In years to come how many people will know
RFO
— Reason For Outage
SEI
— Software Engineering Institute
RACON
— Radar Beacon
ZIP
— Zone Improvement Plan
TCP
— Transmission Control Protocol
BPR
— Business Process Re-engineering
RM
— Resource Management
DDE
— Dynamic Data Exchange (in software parlance)
ITU
— International Telecommunication Union
ERT
— Emergency Response Team
WYSIWYG
— What You See Is What You Get (pronounced Wizzy-wig. See Entry For Derived Acronyms)
MRC
— Monthly Recurring Charge
HSD
— High Speed Data
DQE
— Detective Quantum Efficiency
MLS
— Multiple Listing Service
ATN
— Aeronautical Telecommunication Network
AGP
— Accelerated Graphics Port
SOHO
— Small Office Home Office
ARP
— Address Resolution Protocol (ATM)
SQL
— Structured Query Language
CMI
— Computer Managed Instruction
CAA
— Civil Aviation Authority
ISAKMP
— Internet Security Association and Key Management Protocol
AAAS
— American Association for the Advancement of Science
AT&T
— American Telephone and Telegraph (U.S. company, also known as "Ma Bell")
USB
— Universal Serial Bus
NMR
— Nuclear Magnetic Resonance
ROS
— Return on Sales
VTC
— Video Teleconference
VR
— Virtual Reality
AVHRR
— Advanced Very High Resolution Radiometer
CFE
— Contractor-Furnished Equipment
FCC
— Federal Communications Commission (US)
RU
— Are You?
TC
— Telephone Call
HZ
— cycles per second (hertz)
AADC
— Automated Area Distribution Center
EAP
— Extensible Authentication Protocol
ASK
— amplitude shift keying
SAIC
— Science Applications International Corporation
SCM
— Supply Chain Management
DTX
— Discontinuous Transmission
USD
— United States Dollar
EEG
— Electro-EncephaloGram
PECVD
— Plasma-Enhanced Chemical Vapor Deposition
CHAP
— Challenge Handshake Authentication Protocol (ATM)
RPC
— Remote Procedure Call
ATS
— applications technology satellite
UHF
— Ultra High Frequency (300-3000 MHz; 1m-10cm)
TCB
— Trusted Computing Base
CLI
— Command line Interface (Cabletron)
ATM
— Adobe Type Manager
B2B
— Business to Businesse
PMA
— Physical Medium Attachment
NSF
— National Sanitation Foundation
IP
— Intellectual Property
CRL
— Certificate Revocation List
AF
— Audio Frequency
DSTE
— Digital Subscriber Terminal Equipment
TCP/IP
— transmission control protocol/internet protocol
SMS
— Short Message Service
TV
— Television
UN
— United Narions
DQPSK
— Differential Quadrature Phase-Shift Keying
CM
— Configuration Management
OSHA
— Occupational Safety and Health Act (1970)
ISRO
— Indian Space Research Organisation
SBC
— Southwestern Bell Corporation
W3C
— World Wide Web Consortium
STP
— standard temperature and pressure (0° and 1 atm)
ISBN
— International Standard Book Number (ISO 2108)
BRI
— Basic Rate Interface
NTIS
— National Technical Information Service Technology Administration
I/O
— Input/Output
QI
— Quality Improvement
COQ
— Cost Of Quality
ASEAN
— Association of South East Asian Nations
PM
— post meridian
DOS
— Disk Operating System
B3ZS
— bipolar 3-zero substitution
WIPO
— World Intellectual Property Organization
FDDI
— Fiber Distributed Data Interface
CCIS
— Common Channel Interoffice Signaling
AE
— Application Entity
NTIA
— National Telecommunications and Information Administration
KISS
— Keep It Simple Stupid
NEMA
— National Electric Manufacturer's Association
CIM
— Common Information Model
MDA
— Monochrome Display Adapter
ISSN
— International Standard Serial Number (ISO 3297)
BECN
— Backward Explicit Congestion Notification
DCN
— Design Change Notification
SLF
— Super Low Frequency
PM
— Project Manager
SVP
— Senior Vice President
SIG
— Special Interest Group
NSA
— National Security Agency
HDML
— Handheld Device Markup Language
PPB
— parts per billion (109)
AT&T
— American Telephone & Telegraph
SP
— Service Provider
EOT
— End Of Transmission
AWG
— American Wire Gauge
NOAA
— National Oceanic and Atmospheric Administration (US)
ICMP
— Internet Control Message Protocol
ATF
— Advanced Tactical Fighter
APIC
— Advanced Programmable Interrupt Controller
AP
— Application Protocol
EPR
— Ethylene-Propylene Rubber
OFC
— Office
CRC
— Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
EEPROM
— Electrically Erasable Programmable Read-Only Memory
PE
— Polyethylene
IANA
— Internet Assigned Numbers Authority
PAR
— Precision Approach Radar
AFC
— Automatic Frequency Control
AEC
— Architecture, Engineering, Construction
FCA
— Free Carrier
LF
— Low Frequency
CIA
— Central Intelligence Agency
M
— Meter
PST
— Pacific Standard Time (UTC-8 Hours)
BJT
— Bipolar Junction Transistor
DCOM
— Distributed Component Object Model
RFI
— Radio Frequency Interference
AMT
— Amount
OSI
— Open Systems Interconnection (iso Standard)
BCD
— Binary-Coded Decimal
ISS
— International Space Station
BER
— Bit-Error Rate
ITSEC
— Information Technology Security Evaluation Criteria
MHS
— Message Handling System (electronic)
NA
— Not Applicable
JPEG
— Joint Photographic Experts Group (24-bit image storage format)
CW
— Continuous Wave
PT
— Project Team
DMTS
— Distinguished Member Of Technical Staff
SGML
— Standard Generalized Markup Language
CORBA
— Common Object Request Broker Architecture
LMS
— Learning management system
WMO
— World Meteorological Organization (ICSU)
FTTB
— Fiber To The Building
SPC
— Statistical Process Control. Forerunning quality theory from the 1960s to TQC and TQM.
BT
— British Telecommunications
DTI
— Department of Trade and Industry (UK)
VAC
— Vacant
MAC
— Message Authentication Code
TOS
— Type Of Service
PLD
— Programmable Logic Device
SAE
— Society of Automotive Engineers
PWD
— Password
CBC
— cipher block chaining
OSS
— Operational Support System
ADT
— Atlantic Daylight Time (UTC-3 Hours)
CUL
— See You Later
MF
— Medium Frequency
IMEI
— International Mobile Equipment Identity
WTO
— World Trade Organisation
NMT
— Nordic Mobile Telephone
EDP
— Electronic Data Processing Plc (London Stock Exchange [LSE])
ADT
— Abstract Data Type
LCP
— Link Control Protocol
AT
— Advanced Technology
ASQC
— American Society for Quality Control's
BSOD
— Blue Screen Of Death
SXS
— Step-By-Step
PSTN
— Public Switched Telephone Network
RCU
— Remote Control Unit
ACTV
— Active
Z
— Zero
FASB
— Financial Accounting Standards Board
OS
— Operating System
SPC
— Stored Program Control
EISA
— Extended Industry Standard Architecture
FCS
— Frame check sequence (Ethernet)
GRE
— Generic Routing Encapsulation
T&C
— Terms & Conditions
AVL
— Available
SHA
— Secure Hash Algorithm
KHZ
— kilohertz (1000 cycles per second)
JIS
— Japanese Industrial Standard
ERP
— Enterprise Resource Management
EGA
— Enhanced Graphics Adapter
CIC
— Circuit Identification Code
ARA
— Apple Remote Access
MIME
— Multipurpose Internet Mail Extension
BIS
— Bureau of Indian Standards
AMI
— Advanced Metering Infrastructure
MMU
— Memory Management Unit
AXE 10
— Series of electronic telephone exchanges from L.M. Ericsson
LP
— Low Pressure
ECP
— Engineering Change Proposals
SSL
— Secure Socket Layer
DMA
— direct memory access (computer term)
BS
— Base Station
PBX
— Private Branch eXchange (company phone system)
HSDPA
— High-Speed Downlink Packet Access
SML/SMS
— Service Management Layer/Service Management Service
TPDU
— Transport Protocol Data Unit
PDU
— Protocol data unit (such as segment, packet, frame, etc.)
RSVD
— Reserved
ADF
— Automatic Direction Finder
TAC
— Technical Assistance Center
EDD
— Envelope Delay Distortion
QAM
— quadrature amplitude modulation
URI
— Uniform Resource Identifier
PPP
— Point-to-Point Protocol
ACFQ
— Absence Compensation Fair Queuing
DSSS
— Direct Sequence Spread Spectrum
CFD
— computational fluid dynamics
JPL
— Jet Propulsion Laboratory (California Institute of Technology) (NASA)
RFD
— Request For Discussion
RCC
— Rescue Coordination Center
CDMA
— Code Division Multiple Access (voice/data transmission)
BBU
— Baseband Unit
FCW
— Federal Computer Week
NAFTA
— North American Free Trade Agreement
NIST
— National Institute of Standards & Technology (US)
CGI
— Computer-Generated Imagery
PABX
— private automatic branch exchange (telephone)
MS
— Mobile Station
OSPF
— Open Shortest Path First (ATM)
DLC
— Digital Loop Carrier
BPRZ
— Bipolar Return-to-Zero
WAP
— Wireless Application Protocol
SNMP
— Simple Network Management Protocol (ATM)
KM
— Knowledge Management
WLTF
— Wireless LAN (Local Area Network) Task Force
DSA
— Directory System Agent
C4
— Command, Control, Communications, and Computers
AS
— Autonomous System
NRC
— National Research Council (Canada)
BNSC
— British National Space Centre
DUP
— Duplicate
LEC
— Local Exchange Carrier
MOS
— Model Output Statistics
HTTPS
— HyperText Transfer Protocol Secure
UAS
— Unavailable Seconds
RACF
— Resource Access Control Facility
DIT
— Directory Information Tree
APPL
— Application
ELF
— Extremely Low Frequency
ICANN
— Internet Corporation for Assigned Names and Numbers
DCE
— Distributed Computing Environment
CATV
— Cable Television
SIL
— Speech Interference Level
RTU
— Remote Terminal Unit
CCSD
— command communications service designator; control communications service designator
D-RAM
— Dynamic Random Access Memory
ADN
— Advanced Digital Network
ISO
— Infrared Space Observatory
CERT
— Computer Emergency Response Team
RMS
— root mean square (preferred over "RMS")
ECR
— Electronic Cash Register
MIC
— Message Integrity Check
B2C
— Business-to-Consumer
DOM
— Document Object Model
VB
— Visual Basic
RIP
— Routing Information Protocol
NBS
— National Bureau of Standards (US)
IEC
— International Electrotechnical Commission
MS
— Millisecond
WAFB
— Wireless Absolute Fairness Bound
GB
— Gigabyte
ECE
— Economische Commissie voor Europa (United Nations) (Dutch: Economic Commission for Europe)
MS
— Message Store
HDLC
— High-Level Data Link Control
PLMN
— Public Land Mobile Network
JSC
— Johnson Space Center (Houston, TX)
ME
— Mobile Equipment
9
— Nine
OM
— Old Man
NAS
— Network Access Server
CAM
— Computer-Aided Mapping
NESDIS
— National Environmental Satellite, Data, and Information Service
EMC
— Electromagnetic Compatibility
DNIS
— Dialed Number Identification Service
SNR
— Signal-to-Noise Ratio
CFA
— Carrier Facility Assignment
NCSA
— National Center for Supercomputing Applications
DSP
— Digital Signal Processor
RFS
— Request For Service
CRBT
— Caller Ring Back Tone
USGS
— United States Geological Survey (DOI)
LCN
— Logical Channel Number
HW
— Hardware
ISAS
— Institute of Space and Astronautical Sciences (Japan)
ELINT
— Electronic Intelligence Satellite
RAD
— Rapid Application Development
CIM
— Corporate Information Management
DMX
— De-MultipleXer
DT
— DWDM (Dense Wavelength Division Multiplexing) Terminal
SIT
— Static Induction Transistor
PIN
— Personal Identification Number
EMS
— Express Mail Service
IW
— Information Warfare
TLS
— Transport Layer Security
ECMA
— European Computer Manufacturer's Association
ASQ
— Alpha System Qualification
APC
— American Power Conversion
CRIS
— Carrier Route Information System
IMPACT
— Integrated Manufacturing Precision Assembly Cellular Technology
IRS
— Interface Requirements Specification
HF
— High Frequency
ADC
— Analog-Digital Converter
CG
— Coast Guard
MIPS
— Millions of Instructions Per Second
CMP
— Connection Management Protocol
VDS
— Variable Depth Sonar
WB
— Write Back
VOL
— Volume
IRLAN
— Infrared LAN
CES
— Consumer Electronics Show
YL
— Young Lady
YP
— Yellow Pages
3G
— Third Generation mobile phone network
TM
— Technical Manual
SCADA
— Supervisory Control And Data Aquisition
PDS
— Protected Distribution System
DC
— Disconnected
STM
— Short Term Memory
DTR
— Data Terminal Ready
MVS
— Multiple Virtual Storage
BYOD
— Bring Your Own Device
MS
— Management System
AMI
— Alternate Mark Inversion
TTYL
— Type To You Later
PVC
— Permanent Virtual Circuit (ATM)
LLC
— Logical Link Control
DPC
— Destination Point Code
CATV
— Community Antenna Television
EAI
— Enterprise Application Integration
CDS
— Cell Directory Service
AT
— Access Tandem
OMS
— Optical Multiplex Section
IS
— Intermediate System
DASD
— Direct Access Storage Device
SOGA
— Share of Gross Adds
FC
— Fibre Channel
CIS
— CompuServe Information Service
RSVP
— Resource Reservation Protocol (Internet)
BUS
— Business
LF
— Line Feed
ROTFL
— Roll On The Floor Laughing
CS
— Cable Select
SPA
— Special Prorate Agreement
TAG
— Technical Advisory Group for Biological Control Agents of Weeds
CA
— Certificate Authority
ECN
— Explicit Congestion Notification
CLNP
— ConnectionLess-mode Network Protocol
RSN
— Real Soon Now [which may be a long time coming]
STI
— Speech Transmission Index
PRF
— Pulse Repetition Frequency
PAN
— Personal Area Network
CHF
— Swiss Franc
CG
— Center of Gravity (DXS)
AR
— Access Rate
APS
— Automatic Protection Switching (SONET/SDH)
CSO
— Customer Service Operations
RAN
— Radio Access Network
ARPU
— Average Revenue Per User
RH
— Relative Humidity
LD
— Long Distance
MAC
— Media Access Control
LLU
— Local Loop Unbundling
ANI
— Automatic Number Identification (Caller ID)
LPE
— Liquid Phase Epitaxy
CAB
— Conformity Assessment Body
OTN
— Optical Transport Network
WMAN
— Wireless Metropolitan Area Network
SEM
— Space Environment Monitor
TG
— Task Group
VLF
— Very Low Frequency
BGP
— Border Gateway Protocol (routing protocol)
SSM
— Source-Specific Multicast
DCS
— Digital Cross-connect System
STA
— State
1000BASE-T
— 1000 Megabits per Second, Baseband, Twisted Pair
SOAP
— Simple Object Access Protocol
CBDS
— Connectionless Broadband Data Service
VOIP
— Voice Over IP (Internet Protocol)
LDAP
— Lightweight Directory Access Protocol (pronounced Ell-dap)
DIBL
— Drain-induced Barrier Lowering
AIS
— Alarm Indication Signal
PAL
— Programmable Array Logic
PD
— Public Domain
AML
— Amplitude Modulated Link
VM
— Virtual Machine
IS
— International Standard
CABS
— Carrier Access Billing System
OLE
— Object Linking and Embedding (Microsoft communication protocol)
COO
— Cost of Ownership
CEV
— Controlled Environment Vault
MCSD
— Microsoft Certified Solution Developer
CIFS
— Common Internet File System
FCA
— Free Carrier Absorption
MIB
— Management Information Base (ATM)
ACR
— Attenuation Crosstalk Ratio
FTTH
— Fiber To The Home
PET
— positron emission tomography
ESTEC
— European Space Research and Technology Centre
IPX
— Internetwork Packet Exchange
JST
— Japan Standard Time
CO
— Certificate of Origin
NIC
— Network Information Center
ASI
— Asynchronous Serial Interface
SVC
— Scalable Video Coding
CC
— Call Control
TB
— Terabyte
MHS
— Microwave Humidity Sounder
ACT
— ACTIVITY, ACTIVITIES
MTSO
— Mobile Telephone Switching Office
NLMS
— Normalized Least Mean Square
PCI
— Peripheral Component Interconnect
BRA
— Basic Rate Access
CAV
— Constant Angular Velocity
AU
— Audio Unit
MDA
— Model Driven Architecture
AYT
— Are You There
MGMT
— Management
BT
— BlueTooth
CRO
— Central Records Office
DAP
— Directory Access Protocol
TS
— Technical Specification
EOB
— End Of Business
ACPI
— Advanced Configuration and Power Interface
VCC
— Virtual Channel Connection (ATM)
BLOS
— Beyond Line-Of-Sight
NOC
— Network Operations Center
SW
— South West
DSN
— Deep Space Network - network of large antennas and communication facilities.
NCS
— National Communications System
CMD
— Command
UPS
— Uninterruptible Power Supply
RTS
— Request To Send
IDT
— Integrated Digital Terminal
MPLS
— Multi Protocol Label Switching
CAD
— Computer-Aided Design
WG
— Working Group
VOD
— Video On Demand
UAN
— Universal Access Number
ITT
— Invitation To Tender
ISI
— Inter-Symbol Interference
E
— Energy
IIS
— Internet Information Services
COM
— Component Object Model
CCTA
— Central Computer and Telecommunications Agency
FAX
— Facsimile
AFSK
— Audio Frequency Shift Keying
PAP
— Password Authentication Protocol (ATM)
COMJAM
— Communications Jamming
WS
— Workstation
ISA
— Industry Standard Architecture
HTML
— Hyper Text Markup Language
POTS
— Plain Old Telephone Service (FCW)
SDH
— Synchronous Digital Hierarchy (ATM)
ZIP
— Zone Information Protocol
RJ-14
— Registered Jack type 14 (2-wire connector)
ASR
— Automatic Speech Recognition
SCTP
— Stream Control Transmission Protocol
UML
— Unified Modeling Language (Object Management Group, OMG)
DOT
— Department of Telecommunications (India)
BIOS
— Basic Input Output System
DA
— Destination Address
MCD
— Magnetic Circular Dichroism
FR
— Frame Relay
EPR
— Electron Paramagnetic Resonance
NIS
— Network Information Service
DUC
— Digital Up-Converter
CF
— Compact Flash
NOTAM
— Notice to Airmen
AMHS
— Automated Message Handling System
ADCCP
— Advanced Data Communications Control Procedures
DRM
— Digital Rights Management
ASIC
— application-specific integration circuit
CBEMA
— Computer & Business Equipment Manufacturers Association
CMC
— Career Management Center
AMLCD
— Active Matrix Liquid Crystal Display
IRDA
— Infrared Data Association
OAS
— Organization of American States
DS
— Digital Signal
ATSR
— Along-Track Scanning Radiometer
PCMCIA
— Personal Computer Memory Card International Association
TE
— Traffic Engineering
LSR
— Local Service Request
EEA
— European Economic Area
DCMI
— Dublin Core Metadata Initiative (Online Computer Library Center)
YAHOO
— You Are Hazy Over Oranges
SKU
— Stockkeeping Unit
DIS
— Distributed Interactive Simulation
HSS
— Home Subscriber Server
AEW
— Airborne Early Warning
MPI
— Message Passing Interface
BPDU
— Bridge Protocol Data Unit
ECT
— Explicit Call Transfer
AFS
— Andrew File System
PDN
— Packet Data Network
VOC
— Volatile Organic Compounds (air pollution)
MME
— Mobility Management Entity
MBPS
— Megabits per second
NTFS
— New Technology File System
EMR
— Electromagnetic Radiation
JVM
— Java Virtual Machine
SA
— Scientific American
AOI
— Area Of Interest
MCU
— Multipoint Control Unit
RCV
— Receive
BG
— Background
VLL
— Virtual Leased Line
VXML
— Voice eXtensible Markup Language
MSU
— Microwave Sounding Unit
UA
— User Agent
TEC
— Total Electron Content
ESF
— Edge Spread Function
SVD
— Singular Value Decomposition
NIMBY
— Not In My Back Yard
PPARC
— Particle Physics and Astronomy Research Council
GDS
— Global Distribution System
NLM
— National Library of Medicine (National Institutes of Health)
BOFH
— Bastard Operator From Hell
100BASE-T
— 100 Megabits per second, Baseband, Twisted pair
IN
— Intelligent Network
F
— Fellow
EPABX
— Electronic Private Automatic Branch Exchange
SPI
— Service Provider Interface
CAN
— Campus Area Network
WPAN
— Wireless Personal Area Network
VAS
— Value Added Services
VOP
— Voice Over Packet
DID
— direct inward dial
MC
— Message Center
ES
— Errored Second
STP
— Spanning Tree Protocol
RQMTS
— Requirements
APM
— Advanced Power Management
DCP
— Design Change Package
LQC
— Line Quality Control
ARIN
— American Registry for Internet Numbers
SM
— Senior Member
YYP
— Yahoo Yellow Pages
RDF
— Radio Direction Finder
FA
— Functional Area
TBD
— To Be Decided
RSRQ
— Reference Signal Received Quality
MSE
— Mobile Subscriber Equipment
CTS
— Clear To Send
LZ
— Landing Zone
EC
— European Community
CAC
— Carrier Access Code
FXO
— Foreign Exchange Office
HDSL
— High-bit-rate Digital Subscriber Line
ADL
— Advanced Distributed Learning
LPC
— Linear Predictive Coding
NI
— Network Interface
CFD
— Call For Discussion
FCP
— Fibre Channel Protocol
FAT
— File Allocation Table
TOP
— Technical Office Protocol
OAM&P
— Operations, Administration, Maintenance & Provisioning
CBP
— Coded Block Pattern
IMSI
— International Mobile Subscriber Identity
BOC
— Bell Operating Company
RARP
— Reverse Address Resolution Protocol
PGA
— Programmable Gate Array
CICS
— Customer Information Control System (IBM Mainframe Software; Kicks Or C-I-C-S)
EAC
— Engineering Accreditation Commission
GOS
— Grade Of Service
SAR
— Specific Absorption Rate
FUP
— Fair Use Policy
RT
— Radiotelephone
ARINC
— Aeronautical Radio Incorporated
SLP
— Service Location Protocol
CGM
— Computer Graphics Metafile
ADP
— Automatic Data Processor
TCSEC
— Trusted Computer System Evaluation Criteria
WLAN
— Wireless Local Area Network
CCD
— Charge Coupled Device - a device for the movement of electrical charge.
ADEOS
— ADvanced Earth Observing Satellite (Japan)
ESS
— Electronic Switching System
MTU
— Maximum Transmission Unit
AFP
— AppleTalk Filing Protocol
WPM
— speech--words per minute
MD
— Mediation Device
STP
— Signal Transfer Point
CFV
— Call For Vote(s)
PKI
— Public Key Infrastructure (cryptography)
CT
— Computer Telephony
UL
— Uplink
AIFF
— Audio Interchange File Format
BS
— Beam Splitter
BACP
— Bandwidth Allocation Control Protocol
SHF
— Super High Frequency
CSPRM
— Common Signaling Protocols Resource Module
100BASE-T4
— 100 Megabits per Second, Baseband, Four-pair Category 3 UTP cables
SCP
— Service Control Point
EAS
— Extended Area Service
PCM
— Pulse-Code Modulation
OTS
— Optical Transmission Section
P
— Predicted
ASR
— Access Service Request
DDS
— Digital Data Service
PSD
— Phase-Sensitive Detector
ADF
— automatic document feeder
NMS
— Network Management System
CMT
— Cadmium Mercury Telluride
ASTD
— American Society of Training and Development (Alexandria, Virginia)
DMARC
— Demarcation point
BAN
— Base Area Network
OSTP
— Office of Science and Technology Policy
GDM
— GSM (Global System for Mobile communications) Data Module
BERT
— Bit Error Rate Tester (telecommunication)
IP
— Intelligent Peripheral
RJ-25
— Registered Jack type 25 (6-wire connector)
ECPA
— Electronic Communications Privacy Act 1986
TWT
— Traveling Wave Tube
ECAC
— European Civil Aviation Conference
VBR
— Variable Bit Rate (ATM)
MSR
— Microwave Scanning Radiometer
DDCMP
— Digital Data Communications Message Protocol
TO
— Technical Order
AAS
— Adaptive Antenna System
RRN
— Routing Recording Number
DX
— Duplex
COAX
— Coaxial
MP
— Multilink Protocol
ARQ
— Automatic Repeat-reQuest
ROSAT
— Roentgen Satellite
SATAN
— Security Administrator Tool for Analyzing Networks
OLAP
— Online Analytical Processing
TEL
— Telephone
MPEG
— Motion Picture Experts Group
IMC
— Intermediate Metal Conduit
2W
— Two Wire
PUB
— Publication (file name extension)
STK
— Satellite Tool Kit
TIA
— Telecommunications Industry Association
ITP
— Interactive Telecommunications Program
TN
— Telephone Number
IV
— Initialization Vector
M
— Management
CPS
— Cycles Per Second (now Hertz)
LEP
— Large Electron Positron
E&M
— ear and mouth (special signaling leads)
RCS
— Radar Cross Section
CLM
— Career Limiting Move. A reminder to think twice before embarking on any action that has an obvious whiff of disaster about it. (Ack R Gesling and S Phillips)
DBS
— Direct Broadcast Satellite
B-ISDN
— Broadband Integrated Services Digital Network
SPADATS
— Space Detection And Tracking System
SBC
— Session Border Controller
NFPA
— National Fire Protection Association
NNTP
— Network News Transfer Protocol
SEC
— Software Engineering Center
MCA
— Micro Channel Architecture
FITS
— Flexible Image Transport System
TLC
— The Learning Channel
DVP
— Digital Voice Privacy
CDA
— Command and Data Acquisition
OC
— Optical Carrier
E
— Echo Time Zone
STN
— Station Casinos, Inc.
QPSK
— aeronautical quadrature phase shift keying
WWAN
— Wireless Wide Area Network
AFM
— Atomic Force Microscopy
911
— Emergency Services Phone Number
TOS
— Temporarily Out of Service
NSAI
— National Standards Authority of Ireland
LEN
— Line Equipment Number
CSAT
— Customer Satisfaction
ECM
— Electronic Counter Measures
ESF
— Extended Super Frame (ATM)
LQR
— Linear Quadratic Regulator
PUK
— PIN (Personal Identification Number) Unlocking Key
CD
— Critical Dimension
BER
— Basic Encoding Rules (ASN.1)
TELECOMMUTE
— Telecommuting
KB
— Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
ARPANET
— ARPA Network
TI
— Time Interval
PDC
— Personal Digital Cellular
TRM
— Technical Reference Model
CU
— Channel Unit
BIP
— Band Interleaved by Pixel
RA
— Risk Analysis
RP
— Reference Point
VGA
— Video Graphics Array
AAF
— Advanced Authoring Format
BCH
— Binary Coded Hexadecimal
OPC
— Originating Point Code
KDC
— Kerberos Key Distribution Center
MIT
— Massachusetts Institute of Technology (U.S.)
EHF
— Extremely High Frequency
FSAI
— Fiber Serving Area Interface
AUD
— Audit
WPS
— Wireless Priority Service
CCNA
— Cisco Certified Network Associated
RT
— Remote Terminal
ELT
— Emergency Locator Transmitter
RSS
— Really Simple Syndication
BSA
— Business Software Alliance
Y
— Yttrium
IS
— Information System
FE
— Far End
PIM
— Personal Information Manager
NOAO
— National Optical Astronomy Observatories (Tucson, AZ)
DCS
— Digital Cross-Connect
WORM
— Write-Once, Read-Many
SDLC
— Synchronous Data Link Control
DID
— data item description
SDM
— Service Delivery Management
SVC
— Switched Virtual Connection
SAN
— System Area Network
MIS
— Management Information Service
SML
— Service Management Layer
DTD
— Document Type Definition (XML)
NNM
— Network Node Manager
MCC
— Mission Control Center (JSC)
LU
— Logical Unit
ARG
— Argument
DDN
— U.S. Defense Data Network
ODBC
— Open Database Connectivity
FR PVC
— Frame Relay Permanent Virtual Connection
EIP
— Equipment installation procedure
VC
— Virtual Channel
EMS
— Enhanced Messaging Service
AIN
— Advanced Intelligent Network
PDS
— Planetary Data System
EFS
— Encrypting File System
DSLAM
— Digital Subscriber Line Access Multiplexer (Module)
ECP
— Encryption Control Protocol
CO
— Central Office
GHZ
— Gigahertz
LNP
— Local Number Portability
SDK
— Software Development Kit (Microsoft)
OD
— Outside Diameter
MOL
— Manned Orbiting Laboratory
EX
— Exercise
MEID
— Mobile Equipment Identifier
CAPS
— Call Attempts Per Second
TCR
— Temperature Coefficient of Resistance
FSK
— Frequency-Shift Keying
TE
— Terminal Equipment
TCIC
— Trunk Circuit Identification Code
ASARS
— Advanced Synthetic Aperture Radar System
ACT
— Activity
EGP
— Exterior Gateway Protocol
POE
— power over ethernetinjector
SPGA
— Staggered Pin Grid Array
MMSI
— Maritime Mobile Service Identity
WINS
— Windows Internet Name Service
LRC
— Learning Resource Center
NIC
— Network Interface Controller
SRS
— Software Requirements Specifications
ADT
— American District Telegraph Company
ABN
— Abnormal
TDMA
— Time Division Multiple Access
DEC
— Decimal
APN
— An Access Point Name
TE
— Test Equipment
ARC
— Army Reuse Center
DAL
— Dedicated Access Line
SD
— Software Development
FAA
— Federal Aviation Agency
10BASE-T
— 10 Megabits per second, Baseband, Twisted pair
JCL
— Job Control Language
ETS
— European Telecommunication Standard
OTA
— Office of Technology Assessment (U.S.; abolished by Congress, Fall 1995)
SUS
— Suspension
TCPA
— Telephone Consumer Protection Act
FWA
— Fixed Wireless Access
DL
— Digital Library
ATS
— Automatic Transfer Switch
NE
— North-East
MOD
— Modify
ORB
— Object Request Broker
LIU
— Line Interface Unit
FE
— Finite Element
ACAP
— Application Configuration Access Protocol
DAT
— Digital Audio Tape
ATA
— Analog Telephone Adapter
CER
— Cell Error Ratio
OCC
— Occupancy
BHCA
— Busy Hour Call Attempt
COMINT
— Communications Intelligence
CNM
— Customer Network Management
IRS
— Inertial Reference System
BIU
— Bus Interface Unit
CBR
— Constant Bit Rate
ACF
— Access Control Field
4W
— Four-Wire
TDM
— Time Division Multiplexer
COMDEX
— Computer Dealers Exposition
DID
— Digital Information Display
OMA
— Open Mobile Alliance
VSAT
— Very Small Aperture Terminal (satellite service)
EMS
— Element Management System (ATM)
PTA
— Pakistan Telecommunication Authority
DII
— Defense Information Infrastructure
PROM
— Programmable Read-Only Memory
SOS
— Save Our Souls (Help!)
Y
— Yes
TTY
— Teletype Telex Machine
AAV
— Accountholder Authentication Value
BOD
— Bandwidth on Demand
NCP
— Network Control Protocol
TOA
— Time Of Arrival
IESG
— Internet Engineering Steering Group
VLSI
— Very-Large-Scale Integration
AWACS
— Airborne Warning And Control System
DCS
— Digital Cellular System
DIS
— Draft International Standard
SLAM
— Scanning Laser Acoustic Microscope
IEEE
— Institute of Electrical and Electronics Engineers
EIGRP
— Enhanced Interior Gateway Routing Protocol
NCSC
— National Computer Security Center (NSA)
AP
— access point
CPS
— characters per second
SCN
— Switched Circuit Network
TKIP
— Temporal Key Integrity Protocol
METRO
— Metropolitan
RT
— Response Time
ATC
— Advanced Technology Center
NTP
— Network Time Protocol
CSA
— Canadian Standards Association (like UL)
CTU
— Central Terminal Unit
HEX
— Hexadecimal (base 16)
CPN
— Cisco Powered Network
HEHO
— Head End Hop Off
AMPS
— Advanced Mobile Phone System
BTC
— Botswana Telecommunications Corporation
ISO
— Independent System Operator (US) (see also TSO) Responsible for grid management, but does not own assets. (electricity)
AM
— Activity Manager
DPL
— Digital Power Line
SL
— Single Line
VMS
— Virtual Memory System
CB
— Common Battery
PVD
— Physical Vapor Deposition
ACLR
— Adjacent Channel Leakage Ratio
ISOC
— Internet Society
TRLR
— Trailer
PIC
— Peripheral Interface Controller
COPS
— Common Open Policy Service
TDOA
— Time Difference Of Arrival
KAK
— Key-Auto-Key
IRQ
— Interrupt Request
WAIS
— Wide Area Information Server
AN
— Access Node
DSN
— Defense Switched Network
LR-WPAN
— Low-Rate Wireless Personal Area Network
VT
— Virtual Terminal
B6ZS
— Bipolar 6 Zero Substitution
RMI
— Remote Method Invocation
RAU
— Radio Access Unit (Army)
FEP
— Front End Processor
SPM
— Scanning Probe Microscope
EMCON
— Electromagnetic Emission Control
TSR
— Telecommunications Service Request
VBA
— Visual BASIC for Applications
PEM
— Privacy-Enhanced Mail
ADB
— Apple Desktop Bus
PS
— Product Specification
AMR
— Automated meter reading also known as Automatic Meter Reading
CDE
— Common Desktop Environment
MBWA
— Mobile Broadband Wireless Access
DTMF
— Dual-Tone MultiFrequency
A
— Anode
MLP
— Mobile Location Protocol
Q
— Quadrature
MX
— Mixer
B3G
— Beyond Third Generation
NES
— Network Encryption System
RLU
— Remote Line Unit
3GPP
— Third Generation Partnership Project
CDC
— Connected Device Configuration
SWAP
— Shared Wireless Access Protocol
TXM
— Transmission X-ray Microscope
BS
— Broadcast Satellite
SPA
— Software Publishers Association
MUSIC
— MUltiple SIgnal Classification
DCN
— Disconnect
SMB
— Server Message Block
AMSS
— Automatic Message Switching System
CAM
— Content Addressable Memory
SAR
— synthetic aperture radar (satellite)
DVMRP
— Distance Vector Multicast Routing Protocol
LT
— Less Than
NPA
— Numbering Plan Area
LSF
— Line Spread Function
JTF
— Joint Task Force
OT
— Office of Telecommunications
SF
— Single Frequency
DC
— Display Controller
BIS
— Business Information System
LT
— Line Termination
DNIC
— Data Network Identification Code
B2B
— Business-to-Business
UP
— User Profile
TCM
— Trellis-Coded Modulation
CGSA
— Cellular Geographic Service Area
DCE
— Data Communication Equipment
DPL
— Digital Private-Line
DEMUX
— Demultiplexer
LISP
— List Processing Language
PMP
— Project Management Professional
DM
— Domain Model
VF
— Voice Frequency
AFOSR
— Air Force Office Of Scientific Research(USA)
DL
— Data Link
BBM
— Blackberry Messenger
IAB
— Internet Architecture Board
FEC
— Forward Error Correction
EIA
— Extended Interaction Amplifier
QDR
— Quad Data Rate
TLK
— Talk
BTAM
— Basic Telecommunications Access Method
AIT
— Automatic Identification Technology
PM
— Phase Modulation
CI
— Common Interface
FDL
— Facility Data Link
E
— Echo
SAI
— Serving Area Interface
SITA
— Société Internationale de Télécommunications Aéronautiques
PE
— Probable Error
JDK
— Java Development Kit
SA
— Source Address
SPD
— Serial Presence Detect
FMC
— Fixed Mobile Convergence "Mobile UC or Unified Communications over Wireless"
VOA
— Voice Of America
RADIUS
— Remote Authentication Dial-In User Service
ASDE
— Airport Surface Detection Equipment
EST
— Establish
CAMA
— Centralized Automatic Message Accounting
EFIS
— Electronic Flight Information System
DN
— Distinguished Name
PTP
— Point to Point Transmission Service (electricity)
TTY
— teletype terminal
LAG
— Link Aggregation Group
DER
— Distinguished Encoding Rules
MCP
— Microsoft Certified Professional
JRE
— Java Runtime Environment
DMS
— Data Management System
TDD
— Time Division Duplex
CQA
— Certified Quality Auditor
BSS
— Base Station Subsystem
TOVS
— TIROS Operational Vertical Sounder
VPI
— Virtual Path Identifier
CPC
— Continous Packet Compression
BSS
— Basic Service Set
EMI
— Electro-Magnetic Interference
CS
— Convergence Sublayer (ATM)
DSS
— Digital Signature Standard
NSS
— Network Switching Subsystem
MSRN
— Mobile Station Roaming Number
AS
— Access System
ES
— Emergency Service
2W
— 2-Wire
PG
— Page
FLM
— First Line Maintenance
CODEC
— Coder/decoder
SDP
— Software Development Plan
EIR
— Equipment Identity Register
FEP
— Front-End Processor
EULA
— End User License Agreement (usually in reference to software)
ESP
— Encapsulating Security Payload
TL1
— Transaction Language 1
QI
— Quality Indicator
VT
— Vacuum Tube
IRTF
— Internet Research Task Force
SMI
— Structure of Management Information
NAT
— Network Address Translation
IAD
— Integrated Access Device
PC
— Peripheral Controller
YABA
— Yet Another Bloody Acronym
EMEA
— Europe, Middle East and Africa
PP
— Polypropylene
OSCAR
— Orbiting Satellite Carrying Amateur Radio
TDD
— Telecommunications Device for the Deaf
DCS
— Data Collection System (NOAA Polar Orbiting Satellites)
JAN
— Joint Army-Navy
WWAN
— wireless wide-area network
DUA
— Directory User Agent
ISM
— Industrial, Scientific and Medical
C
— Cost
SIM
— Subscriber Identity Module
NRPB
— National Radiological Protection Board
BSI
— British Standards Institution
FTAM
— File Transfer Access and Management
LATA
— Local Access and Transport Area
FRS
— Family Radio Service
NIU
— Network Interface Unit
DVB
— Digital Video Broadcasting
IAT
— Integrated Access Terminal
FRS
— Frame Relay Service
ER
— Extended Range
SZ
— Seizure
RDI
— Remote Defect Indicator (UNI Fault Management)
NA
— Network Adapter
TRMM
— Tropical Rainfall Measuring Mission (US-Japan)
TC
— Transmission Convergence (ATM)
AMPS
— Advanced Mobile Phone Service (cellular phone standard)
DW
— Deep Water
CIAC
— Computer Incident Advisory Capability
FH
— Frequency Hopping
MDM
— Mobile Device Management
SONET
— Synchronous Optical Network
ADN
— Abbreviated Dialing Number
IT
— Integration Test
MRT
— Medical Response Team
ASA
— Acoustical Society of America
WAR
— Weekly Activity Report
SAS
— Special Access Surcharge
CRLF
— Carriage-Return Line-Feed
BNC
— Bayonet Neill-Concelman
LPD
— Low Probability of Detection
DDL
— Digital Data Link
HSCSD
— High-Speed Circuit-Switched Data
AC
— Area Code
CAL
— Calorie
CVR
— Crystal Video Receiver
AIF
— Audio Interchange Format
MIDP
— Mobile Information Device Profile
CAVE
— Cellular Authentication and Voice Encryption Algorithm
CCIR
— International Radio Consultative Committee (French Acronym)
DS-0
— Digital Signal, Level 0
ETSI
— European Telecommunications Standard Institute
NDVI
— Normalized Difference Vegetation Index
SNA
— System Network Architecture
CP
— Change Proposal
EM
— Electromigration
SYM
— Symmetric
EBS
— Electron Bombarded Silicon
FEXT
— Far-End Cross Talk
PU
— Physical Unit (IBM)
SB
— Switchboard
IPCP
— Internet Protocol Control Protocol
CGA
— Carrier Group Alarm
NREN
— National Research and Education Network
HLR
— Home Location Register
TMS
— Time Management System
WHT
— Walsh-Hadamard Transform
E
— Electra
EEHO
— Either End Hop Off
TTY
— Text Teletype
1-ESS
— x-ESS series of Electronic Switching Systems
CSPDN
— Circuit Switched Public Data Network
DPDU
— Data Protocol Data Unit
CONUS
— Contiguous United States
VRML
— Virtual Reality Modeling Language
IDF
— Independent Distribution Frame
TFTP
— Trivial File Transfer Protocol (ATM)
DMI
— Distributed Management Interface
AUI
— Attachment Unit Interface
OOP
— Object-Oriented Programming
SMR
— Specialized Mobile Radio
DPSK
— Differential Phase Shift Keying
RMS
— Resource Management System
WK
— Week
GBPS
— Gigabits per second
SCCP
— Signalling Connection Control Part
MV
— Motion Vector
GBT
— Ground Based Tower
CB
— Citizens' Band
STN
— Station
DDD
— Direct Distance Dialing
SIL
— Solid Immersion Lens
FDTD
— Finite Difference Time Domain
MAI
— Multiple Access Interference
DII
— Dynamic Invocation Interface
RDS
— Rate Determining Step
1FB
— Single line, Flat Business rate;
CMOS
— Complementary Metal Oxide Semiconductors
PDT
— Portable Data Terminal
SG
— Signaling Gateway (IETF)
TSB
— Telecommunication Standardization Bureau
SDP
— Session Description Protocol
CIRC
— Cross-Interleaved Reed-Solomon Code
XPS
— X-Ray Photoelectron Spectroscopy
DISA
— U.S. Defense Information Systems Agency
BS
— Backing Store
PBT
— Polybutylene Terephthalate
UTP
— unshielded twisted pair
APDU
— Application Protocol Data Units
CAP
— Capability
RPV
— Remotely Piloted Vehicle
TSE
— Toronto Stock Exchange
IPS
— InPlane Switching
OTDOA
— Observed Time Difference of Arrival
PSS
— Performance Support System
DSCP
— Differentiated Services Code Point
VLAN
— Virtual Local Area Network
OBC
— Onboard Computer
T
— Temperature
POP
— Post Office Protocol
BCH
— Bose-Chaudhuri-Hocquenghem Coding
IEC
— Interexchange Carrier
ABBR
— Abbreviation
CC
— Country Code
FOSE
— Federal Office Systems Exposition
IRC
— International Record Carrier
BMEWS
— Ballistic Missile Early Warning System (bee-mews)
PCI
— Personal Computer Interface
L2TPV3
— Layer 2 Tunneling Protocol Version 3
SPX
— Sequenced Packet Exchange
RISC
— Reduced Instruction Set Computing
ROW
— Rest Of World
FMS
— Fraud Management System
FRAD
— Frame Relay Access Device
STD
— Subscriber Trunk Dialing
DISN
— Defense Information Systems Network
CBWFQ
— Class Based Weighted Fair Queueing
RECON
— Reconnaissance
NTU
— Network Termination Unit
ACE
— Adaptive Communication Environment
SMDS
— Switched Multimegabit Data Service (ATM)
SLV
— Satellite-Launch Vehicle
FITL
— Fiber-In-The-Loop
GSM
— Groupe Speciale Mobile
DFE
— Design For Environment
LSI
— Large Scale Integration -> VLSI
LASA
— Large Aperture Seismic Array
GMRS
— General Mobile Radio Service
CVD
— Chemical Vapor Deposition
SIL
— Silence
DHD
— Dial Home Device
EBCDIC
— Extended Binary-Coded Decimal Interchange Code
MLM
— Multi-Longitudinal Mode
AF
— Assured Forwarding
SAF
— System Access Fee
ANSI-41
— ANSI standard for mobile management
BELLCORE
— Bell Communications Research, Inc.
ISMI
— International mobile subscriber identity
ADC
— Access Deficit Charge
FTTC
— Fiber To The Curb光纤到路边
VTS
— Vessel Traffic Service
TAD
— Telephone Answering Device
LOO
— Likelihood of Occurrence
SMPTE
— Society of Motion Picture and Television Engineers, Inc.
TRS
— Trunked Radio Systems
NAK
— Negative Acknowledge
WTLS
— Wireless Transport Layer Security
IPVX
— Internet Protocol version X
ASYNC
— Asynchronous
RJE
— Remote Job Entry
BSS
— Base Station System
RCC
— Radio Common Carrier
DTN
— Data Transfer Network
DOR
— Detailed Outage Report
SCCP
— Signaling Connection Control Point
FAS
— Frame Alignment Signal
LD
— Laser Diode
TIFF
— Tag Image File Format
PVC
— Permanent Virtual Connection
O/S
— Operating System
4GL
— Fourth-Generation Language
DNU
— Do Not Use
NAS
— Network-Attached Storage
HFC
— Hybrid Fiber/Coaxial network
4 GIG
— 4 Giga Intellectual Gadget
CNG
— comfort noise generation
TOP
— technical/office protocol
CS-PDU
— Convergence Sublayer - Protocol Data Unit
ETF
— Early Termination Fee
ADC
— Administration Center
DAP
— Distributed Array Processor
SDSL
— Symmetric Digital Subscriber Line
MTS
— Message Transfer System
C
— Collector
SDU
— Signal Distribution Unit
CIS
— Computer and Information Science
TTL
— ToS and Time-to-Live
VHSIC
— Very High-Speed Integrated Circuit
KSU
— Key Service Unit
IOC
— Inter-Office Channel
ODS
— Operational Data Store (knowledge management)
CGA
— Color Graphics Adapter
ACSE
— Association Control Service Element
FEA
— Finite Element Analysis
S/D
— Source/Drain
CSC
— Common Signaling Channel
ACC
— Area Control Center
DPCM
— differential pulse code modulation
DACS
— Digital Access Cross-connect System
TSO
— Telecommunications Service Order
WCDMA
— Wideband Code Division Multiple Access
2G
— Second Generation Wireless Systems
CMIP
— Common Management Information Protocol (ATM)
SFX
— Special Effects
SLIC
— Subscriber Line Interface Circuit
BLER
— Block Error Rate
SM
— Service Module
IV&V
— independent verification and validation
ACP
— Access Control Point
IEEE-SA
— Institute of Electrical and Electronics Engineers - Standards Association
IMAP
— Internet Mail Access Protocol
SWBD
— Switchboard
TAM
— Telephone Answering Machine
SVC
— Switched Virtual Circuit (ATM)
DGPT
— Directorate General of Posts and Telecommunications
EU
— End User
SRM
— Scalable Reliable Multicast
DDU
— Disk Drive Unit
VPA
— Valid Peripheral Address
CFNRY
— Call Forwarding on No Reply
COM
— Comedy Central
NII
— National Information Infrastructure (USA)
TRS
— Telecommunications Relay Service
AP
— Action Point
CAM
— Common Access Method
ESCA
— photoelectron spectroscopy for chemical analysis
OSS
— Operations Support System
SIA
— Securities Industry Association
DFG
— difference-frequency generation
RACH
— Random Access Channel
IPS
— Instructions Per Second
SISIR
— Singapore Institute of Standards and Industrial Research
ASN.1
— Abstract Syntax Notation One
PIC
— Programmable Interrupt Controller
OXCO
— Oven-Controlled Crystal Oscillator
WAYP
— White and Yellow Pages
ALT
— Accelerated Life Test
LDP
— Label Distribution Protocol
UMA
— Unlicensed Mobile Access
CP
— Call Processing
FEM
— Finite Element Method
SQ
— Service Quality
IPM
— Inches Per Minute
DSI
— Digital Speech Interpolation
OSP
— Outside Plant
RAU
— Remote Access Unit
CODASYL
— COnference on DAta SYstems Languages
CAC
— Connection Admission Control (Asynchronous Transfer Mode)
CLK
— Clock
BA
— Behaviour Aggregate
WSFL
— Web Services Flow Language
RSS
— Radio Service Software (Motorola)
BMS
— Business Management System
EECM
— End-to-End Call Manager
DL
— Definition List
SPIN
— Service Provider Identification Number
ASAR
— Advanced Synthetic Aperture Radar
HSPA
— High Speed Packet Access
4G
— Fourth Generation Wireless Systems
DTU
— Data Transfer Unit
MAJ
— Major
PAM
— Payload Assist Module
CE
— Channel Element
SD
— Speed Dial
ASD
— Alternative Service Delivery
DTI
— Digital Trunk Interface
TELNET
— Telecommunications Network Protocol
CPC
— Calling Party Control
ASE
— Application Service Element
SSRC
— Synchronization Source
OSF
— Open Software Foundation
AVR
— Automated Voice Response
IMP
— Interface Message Processor
REA
— Rural Electrification Administration (US)
COO
— Cell of Origin
FGA
— Feature Group A
DRFM
— Digital Radio-Frequency Memory
RDMA
— Remote Direct Memory Access
ARSR
— Air Route Surveillance Radar
IEEE-CS
— Institute of Electrical and Electronics Engineers Computer Society
CCA
— Carrier-Controlled Approach
CS
— Central Station
LFACS
— Loop Facility Assignment and Control System
CALEA
— Communications Assistance for Law Enforcement Act
CGI
— Cell Global Identity
EMR
— Electromechanical Relay
NDS
— Novell Directory Services
MHO
— My Humble Opinion
ABM
— Asynchronous Balanced Mode
CCR
— Customer Controlled Reconfiguration (Sprint)
WSDL
— Web Services Description Language
NCAR
— National Center for Atmospheric Research (US)
VG
— Voice Grade
3-D
— 3-Dimensional
DM
— Differential Mode
P
— Priority
SSM
— Spread Spectrum Modulation
MH
— Message Handler
CT
— Computer Terminal
OWS
— Operator Work Station
UART
— Universal Asynchronous Receiver/Transmitter
WDN
— Wireless Developer Network
SCU
— System Control Unit
AWT
— Agence Wallonne des Télécommunications
NWK
— Network
FECN
— Forward Explicit Congestion Notification (ATM)
IPLC
— International Private Leased Circuit
LCR
— Least Cost Routing
LDN
— Local Directory Number
ISG
— Information Systems Group
TOMS
— Total Ozone Mapping Spectrometer (satellite Instrument)
VESA
— Video Electronics Standards Association
CLDC
— Connected Limited Device Configuration
TPC
— The Phone Company
MSW
— Most Significant Word
FTNS
— Fixed Telecommunications Network Services
EA
— Extended Address Field Bit
BAN
— Building Area Network
IG
— Interface Group
CTI
— Computer Telephony Integration
BOSS
— Binary Object Storage System
FDD
— Frequency Division Duplex
HTML
— Hyper-Text Markup Language
RNX
— Restricted Numeric eXchange
CLETS
— California Law Enforcement Telecommunication System
CHTML
— Compact Hypertext Markup Language
SRR
— Search and Rescue Region
V
— Variable
NCC
— Network Control Center (GSFC)
RGN
— Region
CGI
— Computer Graphics Interface
ALB
— Analog Loopback
COT
— Central Office Terminal
ST
— Such That
INE
— Intelligent Network Element
FOD
— Fax on Demand
BCDIC
— Binary Coded Decimal Interchange Code
PLL
— Phase Locked Loop
RICK
— Repeater Interface Communications Kit
EGSM
— Extended Global System for Mobile Communications
SCPC
— single channel per carrier
VQV
— Voice Quality Value
SFN
— Single Frequency Network
DCA
— Dynamic Channel Assignment
M/W
— MicroWave
LSW
— Least Significant Word
CND
— Calling Number Display
IRF
— Impulse Response Function
DARTS
— Design Approach for Real-Time Systems
COAM
— Customer Owned And Maintained
SSM
— Synchronization Status Message
ACF
— Advanced Communications Function (IBM)
CCNA
— Cisco Certified Network Administrator
DUV
— Deep Ultraviolet
LRC
— Longitudinal Redundancy Check
NF
— Noise Factor
ECM
— Error Correction Model
SSMA
— Spread-Spectrum Multiple Access
FSK
— Frequency Shift Keying
CPG
— Converged Packet Gateway
LIS
— Lightning Imaging Sensor
MSDP
— Multicast Source Discovery Protocol
PTP
— Point To point Protocol
SN
— Stock Number
CMRS
— Commercial Mobile Radio Service
BHCA
— Busy Hour Call Attempts
CIP
— Carrier Identification Parameter
BSID
— Base Station Identity
#
— Number sign, octothorp; special function key
ATS
— Air Traffic Services
OOK
— On/Off Keying
DIV
— Divisionsion
CSU
— Channel Service Unit
TAX
— Trunk Automatic Exchange
DAC
— Digital-To-Analog Converter
RTC
— Real-Time Control
DDI
— Direct Dialing Incoming
TSP
— Telecommunications Service Priority
CRB
— Cramer-Rao Bound
FXS
— Foreign Exchange Subscriber
TCP/IP
— Transmission Control/Internet Protocol
EVA
— Electronic Video Agent
CIP
— Continuous Improvement Program
RX
— Receive
TDRSS
— Tracking and Data Relay Satellite System
SN
— Service Number
TUR
— Trunk Utilization Report
NTDS
— Naval Tactical Data System
VSAM
— Virtual Storage Access Method
EIR
— Excess Information Rate
DNC
— Do Not Call
CLEC
— Competitive Local Exchange Carrier
DC
— Device Control
CCLC
— Carrier Common Line Charge
RSS
— root-sum-square
PDL
— Positioning Data Link
AAS
— advanced automation system (FAA)
OML
— Object Model Library
ILEC
— Incumbent Local Exchange Carrier
MLA
— Modern Language Association
AAL5
— ATM (Asynchronous Transmission Mode) Adaptation Layer 5
AMA
— automatic message accounting
ASN.1
— Abstract Syntax Notation 1
PSN
— Packet Switched Network
UAT
— Universal Access Transceiver
ADCCP
— Advanced Data Communication Control Procedures
TACACS
— Terminal Access Controller Access Control System
CIP
— Channel Interface Processor
MMC
— Microsoft Management Console (Microsoft)
WDA
— Wireless Digital Assistant
DAS
— Data Acquisition System
WE
— Western Electric
DXC
— Digital Cross Connect
FDI
— Feeder Distribution Interface
ELFEXT
— Equal-Level Far-End Cross-Talk
GDK
— GIMP (GNU Image Manipulation Program) Drawing Kit
ESPN
— Entertainment and Sports Programming Network
WTS
— Wireless Telecommunications Symposium
IPR
— Intellectual Property Right
YA
— Yet Another
CNG
— Fax Calling Tone
PNP
— Plug-and-Play
ARM
— Asynchronous Response Mode
EBIC
— Electron Beam Induced Current
MITI
— Ministry of International Trade and Industry
MA
— Maintenance Action
RSL
— Restricted Service License
SS1
— Signalling System 1 (500/20 Hz tones)
LIF
— Logical Interchange Format
ISI
— Intersymbol Interference
PARC
— Palo Alto Research Center
ET
— Electronic Transmission
MGC
— Multimedia Gateway Controller
MPI
— Minimum Picture Interval
DLL
— Digital Local Line
CAM
— Computer-Aided Manufacturing
VLSI
— Very Large-Scale Integration
DLP
— Data Link Processor
IS 41
— Interim Standard 41 (Inter-Cellular Network Communication Protocol)
SIMT
— Système interbancaire marocain de télécompensation
LOP-P
— Loss Of Pointer - Path
CV
— Coding Violation
CPE
— Customer Premise Equipment
FNN
— Full National Number
PTO
— U.S. Patent And Trademark Office
SIP
— Session Initiation Protocol
TMSI
— Temporary Mobile Subscriber Identity
FGD
— Feature Group D
PMT
— Program Management Team
3G
— 3rd Generation Wireless Format
RDBMS
— Relational Data Base Management System (Oracle)
RMON
— Remote Monitoring
TEI
— Terminal Endpoint Identifier
ACA
— Adaptive Channel Allocation
EDFA
— Erbium-Doped Fiber Amplifier
CCITT
— Comit? Consultatif International T?l?graphique et T?l?phonique
FLL
— Fixed-Loss Loop
ANC
— Access Network Controller
MA
— Message Analysis
DOCSIS
— Data over Cable Service Interface Specification
AOS
— Alternate Operator Service
BY
— Busy
DA
— deca
DCF
— Distributed Coordination Function
EDC
— Electronic Dispersion Compensator
PNP
— Positive-Negative-Positive
CDM
— Conceptual Data Model
SETI
— Search for Extraterrestrial Intelligence
LUNT
— Line Unit Network Termination
DMT
— Discrete Multi-Tone Technology
IWF
— Interworking Function
CPH
— Call Party Handling
LRQ
— Location Request
CAMEL
— Customized Applications for Mobile-network Enhanced Logic
B-CPE
— Broadband Customer Premises Equipment
BDE
— Borland Database Engine
MC
— Maintenance Control
DICOM
— Digital Imaging and Communications in Medicine
PIM
— Protocol Independent Multicast
SCCS
— Switching Control Center System
INTELSAT
— International Telecommunications Satellite
SE
— Southeast
L2TP
— Layer 2 Tunneling Protocol
CTIA
— Cellular Telecommunications Industry Association
GRUB
— Greedy Reclamation of Unused Bandwidth
NTE
— Network Terminating Equipment
SR
— Slow Release
VPWS
— Virtual Private Wire Service
F
— Frequency
WARC
— World Administrative Radio Conference
PUC
— Public Utility Commission (electricity)
MSC
— Mobile Switching Center
ETN
— Electronic Tandem Network
HUP
— Hook-UP
EDSX
— Electronic Digital Signal Cross-Connect
LANE
— Local Area Network Emulation
MFLOPS
— Millions of Floating Point Operations per Second
DLCI
— data link connection identifier
WSP
— Wireless Service Provider
FCA
— Fixed Channel Allocation
BOM
— Bit-Oriented Message
ALI
— Automatic Location Information
LP
— Line Pair
GI
— Graded-Index
CRV
— Call Reference Value
CRTS
— Cellular Radio Telecommunications Service
ICL
— Inserted Connection Loss
CAR
— committed access rate
NRP
— Network Resource Planning
LAAS
— Local Area Augmentation System
ILD
— International Long Distance
AWG
— arrayed waveguide grating
VN
— Virtual Network
VTAM
— Virtual Telecommunication Access Method
BSA
— Basic Service Area
TOC
— Telecommunication Operations Center
STU
— Secure Telephone Unit
CLCC
— Ceramic Leaded Chip Carrier
LBR
— Low Bit Rate
SIM
— Subscriber Identification Module
WFA
— Wait for Answer
MTD
— Moving Target Detection
CDV
— Cell Delay Variation(ATM)
DTAP
— Direct Transfer Application Process
CPOP
— Circuit Precedence Over Packet data
DPT
— Dynamic Packet Transport
UBR
— Unspecified Bit Rate
W-CDMA
— Wideband Code Division Multiple Access
DLU
— Digital Line Unit
SSAP
— Source Service Access Point
FTTK
— Fibre To The Kerb
ILETS
— International Law Enforcement Telecommunications Seminar
RXQUAL
— Received Signal Quality
BIND
— Berkeley Internet Name Domain
SCM
— Single-Carrier Modulation
BIS
— Brought Into Service
TDWR
— Terminal Doppler Weather Radar
RADIUS
— Remote Authentication dial In User Service
DTE
— Digital Terminal Equipment
NCP
— Network Control Program
GAN
— Global Area Network
NCF
— Network Control Facility
CIC
— Carrier Identification Code
BUFR
— Binary Universal Form for the Representation (of data)
BSC
— Bi-Synchronous Communications
SNIX
— Single Noise Interference Xterminator
RADINT
— Radar Intelligence
GTP
— GPRS (General Packet Radio Service) Tunneling Protocol
PSO
— Professional Services Organization
REPT
— Report
GRX
— GPRS Roaming Exchange
TLT
— Test Loop Translator
ATSC
— Advanced Television Systems Committee
FOIP
— Fax Over Internet Protocol
URN
— Uniform Resource Namespace
NSAP
— Network Service Access Point
L2F
— Layer 2 Forwarding protocol
LIM
— Line Isolation Monitor
DQDB
— Distributed Queue Dual Bus
PACS
— Personal Access Communications System
CACH
— Call Appearance Call Handling
WTP
— Wireless Transaction Protocol
CSIRO
— Commonwealth Scientific and Industrial Research Organization
SCR
— Sustainable Cell Rate
DXF
— Data Exchange Format
GERAN
— GSM (Global System for Mobile communications) Edge Radio Access Network
NW
— North West
FC
— Frame Control
NE
— Network Element
VCI
— Virtual Channel Identifier
ADPCM
— Adaptive Differential Pulse Code Modulation
3G
— Third Generation (mobile communication system)
CEPT
— Conférence Européenne des Administrations des Postes et des Télécommunications
MTA
— Message Transfer Agents (Internet)
FAC
— Forced Authorization Code
EMF
— Event Management Framework
ALOC
— Average Length Of Call
SAT
— Satellite
RCU
— Radio Control Unit
BDSL
— Broadband Digital Subscriber Line
ETOC
— Electronic Table of Contents
TACSAT
— Tactical Satellite
SSN
— Switched Service Network
UDP
— Up Down Pair
BAN
— Billing Account Number
LS
— Loop Start
STMR
— Sidetone Masking Rating (telecommunications)
VSAT
— Very Small-Aperture Terminal
MEAS
— Measure
BT
— Burst Tolerance
PD
— Pulse Duration
DPA
— Distributed-Power Architecture
CCCH
— Common Control Channel
ADM
— Administration Building
CES
— Circuit Emulation Service
ULL
— Unbundled Local Loop
BT
— Bluetooth Tablet
MMM
— Mobile Media Mode
*
— Star, special function key
MP
— Modulation Parameter
ECS
— Environmental Control System (Subsystem)
ESN
— Electronic Serial Number
B8ZS
— Binary Eight Zero Substitution
DNSIX
— Defense Network Security Information Exchange
IBSS
— Independent Basic Service Set
GTB
— Global Telecom Brokers
TDR
— Time-Domain Reflectometry
PTT
— Push to Talk Technology
EPP
— Enhanced Parallel Port (PC)
MBE
— Molecular Beam Epitaxy
JISC
— Japanese Industrial Standards Committee
CMA
— Communications Management Association
NT
— New Technology, also Windows NT
STM
— Scanning Tunneling Microscopy
SDHLR
— Super-Distributed Home Location Register
ATS
— Abstract Test Suite
TM
— Thematic Mapper (Landsat)
DDLD
— Direct Dial Long Distance
ADPC
— Automatic Data Processing Center
RTB
— Retransmission Buffer
UTL
— Utility
3GPP
— Third-Generation Partnership Project
ERL
— Echo Return Loss
DLT
— Delete
BABT
— British Approvals Board for Telecommunications
RCP
— Right-Hand Circular Polarization
2G
— Second generation cellular
SRL
— Singing Return Loss
IPRC
— Intellectual Property Rights Committee
FPS
— Framing Pattern Sequence
100VG
— 100 Voice Grade (IEEE 802.12 AnyLAN Standard)
EEROM
— Electronically Erasable Read-Only Memory
COC
— Central Office Connection
SCR
— System Change Request
COFA
— Change Of Frame Alignment
VPX
— Virtual Path Cross-Connect
MMDS
— Multichannel Multipoint Distribution Service
F/W
— Firmware
UPT
— Universal Personal Telecommunications
3G HSPA
— Third-Generation High-Speed Packet Access
CERN
— Conseil Europeen Pour La Recherche Nucleaire
FCA
— Free Carrier Alongside
LH
— Link Handler
FTS
— Federal Telecommunications System
RIPE NCC
— Reseaux IP Europeens Network Coordination Centre
MTI
— Moving Target Indicator
FTTP
— Fiber To The Premises
ATTRA
— Appropriate Technology Transfer for Rural Areas
RDT
— Recall Dial Tone
RDT
— Remote Digital Terminal
PTT
— Push to Talk Testing
DCAS
— Downloadable Conditional Access System
SCH
— Synchronization Channel
BORSCHT
— Battery feed, Overvoltage protection, Ringing, Signaling, Coding, Hybrid, and Testing
WNMS
— Wireless Network Management System
DSSSL
— Document Style Semantics and Specification Language
IR
— International Roaming
INSAT
— Indian National Satellite
EFCI
— Explicit Forward Congestion Indication (ATM)
FMR
— Follow Me Roaming
NDIS
— Network Driver Interface Specification (Microsoft Windows NT)
HFC
— Hybrid Fiber Coaxial
CPAP
— Customer Premises Access Profile
MSI
— Maritime Safety Information
MR
— Mobile Router
SN
— Switching Network
BAF
— Bellcore AMA (Automatic Message Accounting) Format
MAP
— Mobile Application Part
FIOS
— Fiber Optic Services
DEM
— Digital Elevation Model
ESCON
— Enterprise System Connection
OMF
— Object Management Framework
CAPTAIN
— Character And Pattern Telephone Access Information Network
NTSC
— National Television Standards Committee
CTE
— Computer Telephony Engineer
OMP
— Open Management Platform
PSDN
— Public Switched Digital Network
FFH
— Fast Frequency Hopping
DRQ
— Disengage Request
CON
— Concentrator
TBPS
— Terabits Per Second
EST
— Electroshock Therapy
CBQ
— Class-Based Queuing
FDOA
— Frequency Difference Of Arrival
FAT
— Final Acceptance Testing
ZCZ
— Zero Correlation Zone
CASE
— Computer-Aided Software Engineering
CAAS
— Communications-as-a-Service
DTL
— Defense Telephone Link
LB
— Local Battery
SPE
— Synchronous Payload Envelope
ET
— Exchange Terminal
TCB
— Telecommunication Certification Body
SA
— Selective Availability (on GPS transmissions)
DOD
— Direct Outward Dialing
TDM
— Time Division Multiplexing
MF
— Multiple Frequency
SRA
— Seamless Rate Adaptation
QOI
— Quality of Information
UMTS
— Universal Mobile Telecommunications Service
SINAD
— SIgnal-to-(Noise And Distortion) ratio
TU
— Transmission Unit
PLCP
— Physical Layer Convergence Procedure
ECTF
— Enterprise Computer Telephony Forum
AQP
— Association for Quality and Participation
MFC
— Multi-Frequency Code
SPID
— Service Profile Identifier
DNI
— Data Network Interface
DPBX
— Digital Private Branch Exchange
SMS
— Service Management System
FAW
— Frame Alignment Word
EM
— Element Manager
CSR
— Customer Service Request
DAC
— Digital to Analog Converter-Audio
NEMP
— Nuclear Electromagnetic Pulse
CDA
— Communications Decency Act's
TBCD
— Telephony Binary Coded Decimal
LAPB
— Link Access Protocol-Balanced
DXI
— Data Exchange Interface
ETOM
— Enhanced Telecom Operations Map
OSA
— Open System Architecture
DE
— Discard Eligibility (ATM)
NC
— Network Channel
TCA
— Threshold Crossing Alert
DPNSS
— Digital Private Network Signaling System
OLS
— Optical Line System
LCF
— Location Confirm
BHA
— Busy Hour Attempts
CID
— Craft Interface Device
ATCA
— Advanced Telecom Computing Architecture
NMC
— Network Management Center
PTT
— Push to Talk Taster
EC
— Equipment Controller
CSAR
— Combat Search and Rescue
CCP
— Compression Control Protocol
TD
— Transmit Data
WFT
— Wireline Formation Test
RRC
— Root Raised-Cosine
LCP
— Local Control Point
LLA
— Link Level Access
RFR
— Radio Frequency Radiation
S/N
— Signal-to-Noise ratio
NSE
— Network Software Environment
MPU
— Main Processor Unit
PMOS
— P-channel Metal Oxide Semiconductor
VISSR
— visible and infrared spin scan radiometer (GOES)
UNI
— User-Network Interface
ENV
— Environment
JWP
— Joint Working Party
ALI
— Automatic Location Identifier
LDI
— Long Distance Interconnect
CALS
— Computer Aided Acquisition and Logistic Support
TSC
— Test System Controller
VADB
— Virtual Auto Dial Backup
DBRNC
— deciBel Relative to Noise in a Circuit
TC
— Technical Committee (HL7)
NAP
— Network Access Point
DPDT
— Double-Pole Double-Throw
DDU
— Digital Data Unit
STM
— Synchronous Transfer Mode
EV
— electronvolt
BATM
— Basic Telecommunication Access Method
BNCC
— Base Network Control Center
NAU
— Network Addressable Unit
TD-CDMA
— Time Division - Code Division Multiple Access
ACF
— Access Coordination Function
ETSI
— European Telecommunications Standards Institute
DECT
— Digital Enhanced Cordless Telecommunication
GSTN
— General Switched Telephone Network
APPC
— Advanced Program-to Program Communications
ACU
— Automatic Calling Unit
CDV
— Compressed Digital Video
NICT
— National Institute of Information and Communications Technology
RPCU
— Radio Port Control Unit
BHCC
— Busy Hour Call Completions
TT
— Text-Telephone
UCF
— Unregistration Confirm
DL
— Downlink Message
FRF-LMI
— Frame Relay Forum - Local Management Interface
3GSM
— Third-generation Global System for Mobile (communications)
PTE
— Path Terminating Equipment (SONET)
DMS
— Defense Messaging System
CSR
— Customer Service Report
ARFA
— Allied Radio Frequency Agency
IPOATM
— Internet Protocol over ATM
WVOIP
— Wireless Voice over Internet Protocol
DIL
— Direct Inward Line
IVP
— Integrated Voice Protocol
MAU
— Multistation Access Unit
4WA
— Four Wire Analog
WFG
— Wireless Firewall Gateway
FI
— Format Identifier
PSLV
— Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
4WAI
— Four-Wire Analog Interface
ATU-C
— ADSL (Asymmetric Digital Subscriber Line) Transceiver Unit - Central office end
CFOT
— Certified Fiber-Optic Technician
VSM
— Vestigial Sideband Modulation
PY
— person-year
FIRST
— Forum of Incident Response and Security Teams (CERT)
LORAN
— Long Range Aid to Navigation System
CSDU
— Core Service Data Unit
FIFO
— first-in, first-out
VOB
— Voice Over Broadband
RM-ODP
— Reference Model for Open Distributed Processing
DUN
— Dial-Up Networking
BUS
— Broadcast and Unknown Server
HDTV
— High-Definition Television
CRS
— Cell Relay Service
MGCP
— Multimedia Gateway Control Protocol
LSAP
— Link Service Access Point
NLM
— NetWare Loadable Module
CLD
— Cross-Layer Design
LRM
— Long Reach Multimode
SMS
— System Management Server
MDN
— Mobile Directory Number
RADARSAT
— Radar Satellite
CRBT
— Color Ring Back Tone
LI
— Length Indicator
AIU
— Analog Interface Unit
DPST
— Double-Pole Single-Throw
ATB
— Above-Ground Telecommunications Backbone
CBMS
— Computer-Based Message System
MAG
— Mobile Access Gateway
BCSM
— Basic Call State Model
SEM
— Scanning Electron Microscopes
BTS
— Base Transceiver Station (cellular)
ANT
— ADSL Network Terminator
GMSS
— Global Mobile Satellite System
AIS-L
— Alarm Indication Signal - Line
SMMR
— Scanning Multichannel Microwave Radiometer
CTO
— Commonwealth Telecommunications Organisation
ARD
— Automatic Ring Down
DCS
— Defense Communications System
B-ISDN
— Broadband ISDN
SCO
— Synchronous Connection Oriented
MB
— Measured Business
MVDS
— Microwave Video Distribution System
ARCNET
— Attached Resource Computer Network
DTU
— Date/Time Update
WTNM
— Working Telephone Number Management
AAV
— Alternate Access Vendor
RADSL
— Rate Adaptive Digital Subscriber Line
CDDI
— Copper Distributed Data Interface
LSP
— Label Switched Path
AT
— Attenuation
LCAS
— Link Capacity Adjustment Scheme
ALCAP
— Access Link Control Application Protocol
PMMA
— Polymethyl Methacrylate
TCS
— Telephony Control Specification
STD
— Secondary Telecom District
PDSO
— Packet Data Security Overlay
USF
— Universal Service Fund
PSN
— Public Switched Network
UIT
— Union Internationale des Télécommunications
WIN
— Wireless Intelligent Network
EVC
— Electronic Voucher Charging
LN
— Line
BB
— Blackberry
ARPT
— Autorité de Régulation des Postes et Télécommunications
CC
— Composite Clock (SONET)
TRIG
— Trigger
LMT
— Lightwave Microcell Transceiver
ATRAC
— Adaptive Transform Acoustic Coding
GOMP
— Get Off My Phone
BIC
— Bus Interface Controller
BPSK
— Binary Phase-shift Keying
MTP
— Message Transfer Part
P2P
— Person-to-Person
GS
— Ground Start
USA
— Underground Service Alert
LEED
— Low-energy Electron Diffraction
VNL
— Via Net Loss
PTM
— Packet Transport Mode
AMTFT
— Active Matrix Thin Film Transistor
LSC
— Link State Control
RS-422
— Recommended Standard 422 (ANSI/EIA standard for transmitting serial data)
SDSL
— Symmetrical Digital Subscriber Line
AGCH
— Access Grant Channel
BTP
— Business Telecom Products, Inc.
SDNS
— Secure Data Network System
DUV
— Data-Under-Voice
MBMS
— Multimedia Broadcast/Multicast Service
VO
— Voice Only
TP
— Transition Point
PHY
— Physical Layer
MIS
— Marketing Intelligence System
DMT
— Discrete Multi-Tone
LOB
— Line Of Bearing/Balance
SGSN
— Serving GPRS (General Packet Radio Service) Support Node
BT
— Back Trace
RLA
— Received Level Average
IDCP
— Internet Device Control Protocol
RDSS
— Radio Determination Satellite Service
FGDC
— Federal Geographic Data Committee's
PMT
— Photo Multiplier Tube
EC-N
— Electrical Carrier (n=a number, e.g., EC-4)
CCSA
— Common Control Switching Arrangement
IDLC
— Integrated Digital Loop Carrier
CLOS
— Clear Line Of Sight
KEK
— Key Encrypting Key
AECT
— Association for Educational Communications and Technology's
TCC
— Transmission Control Code
WAE
— Wireless Application Environment
DTR
— Down-Time Ratio
IMPI
— IP (Internet Protocol) Multimedia Private Identity
BPP
— Billed Party Preference
PJC
— Pointer Justification Count
TP-PMD
— Twisted Pair Physical Medium Dependent
VAN
— Value-Added Network
VOB
— Versioned Object Base
TON
— IEEE/ACM Transactions On Networking
TCM
— Time Compression Multiplexer
VDR
— Voice Digitization Rate
E2E
— End-to-End
DECCO
— DISA Defense Commercial Communications Office
EC
— Entropy Coding
BCS
— British Computer Society
PCS
— Personal Communications Services
ATD
— Advanced Technology Demonstration
ATL
— Advanced Technology Laboratory
CATI
— Computer-Assisted Telephone Interviewing
CDVT
— Cell Delay Variation Tolerance
LCGN
— Logical Channel Group Number
MILNET
— Military Network
SCORM
— Shareable Content Object Reference Model
PCCA
— Portable Computer Communications Association
WSA
— Wireless Security Auditor
DS-3
— Digital Signal, Level 3
GOSIP
— Government Open Systems Interconnection Profile
LMS
— Location and Monitoring Service
ESM
— electronic support measure
CAS
— Column Address Strobe
GFC
— Generic Flow Control (ATM)
CSTA
— Computer Supported Telecommunications Applications
AAP
— Alternate Access Provider
MMB
— Middle Mouse Button
AFPS
— Automatic Facility Protection Switching
PLE
— Path Length Efficiency
UMTS
— Universal Mobile Telecommunication System
QOTS
— Quality Of Telephone Services
MCR
— Minimum Cell Rate (ATM)
VAD
— Voice Activity Detection
VPC
— Virtual Path Connection (ATM)
SMT
— station management (protocol)
RSN
— Regional Service Network
BWX
— Broadband Wireless Exchange
TPS
— Telephone Preference Service
RP
— Radio Port
NESC
— National Electrical Safety Code
FMS
— Fixed Mobile Substitution
BAP
— Bandwidth Allocation Protocol
PTI
— Payload Type Indicator
CACM
— Communications of the ACM
X
— X Window System
CLP
— Cell Loss Priority (ATM)
CDA
— Communications Decency Act of 1996
SAR
— Segmentation and Reassembly (ATM)
DCMES
— Dublin Core Metadata Element Set
BRAN
— Broadband Radio Access Network
KSPS
— KiloSymbols Per Second
AB
— Answer Back
IDCU
— Integrated Digital Carrier Unit
AFI
— Authority and Format Identifier
GSM
— Global System for Mobile telecommunications
TSDU
— Transport Service Data Unit
N-AMPS
— Narrowband Advanced Mobile Phone System
ANAC
— An Automatic Number Announcement Circuit
IPXCP
— Internetwork Packet Exchange Control Protocol
RNR
— Receive Not Ready
LIDB
— Line Information DataBase
NFR
— Near-Field Recording
AMTI
— Airborne Moving Target Indicator
PSQM
— Perceptual Speech Quality Measure
ADIF
— Accounting Data Interchange Format
BSRF
— Basic System Reference Frequency
DMT
— Digital-Discrete Multi-Tone
BP
— Block Parity
RTC
— Right to Carry
PSK
— Phase Shift Key
IXC
— interexchange carrier
EC
— Echo Cancelling
ADM 3X
— DS3 Add-Drop Multiplex
TP
— Telephone Pole
ZD
— Zero Defects
VNS
— Virtual Network System
NRZ
— Nonreturn To Zero
FEAC
— Far End Alarm and Control
LFTYR
— Ley Federal de Telecomunicaciones y Radiodifusión
LMDS
— Local Multipoint Distribution Service
NPSI
— Network Packet Switching Interface
STA
— Science and Technology Agency (Japan)
GTM
— Go to Meeting
ANS
— Advanced Network Services
CFR-47
— Code of Federal Regulations Title 47 (FCC)
AAL
— ATM (Asynchronous Transmission Mode) Adaptive Layer
AEA
— American Electronics Association's
FOC
— Fiber-Optic Cable
BDFB
— Battery Distribution Feeder Bay
JSC
— Joint Scientific Committee (ICSU, WCRP, and WMO)
WFA
— Work Force Administration
3GIP
— Third Generation Internet Protocol
OODBMS
— Object-Oriented Database Management Systems
WIS
— WAN (Wide Area Network) Interface Sublayer
HEC
— Header Error Control
KTS
— Key Telephone System
CCCI
— Command, Control, Communications and Intelligence
CDM
— Configuration Data Manager
QPM
— QoS (Quality of Service) Policy Manager
TNI
— Telephone Network Interface
QS
— Quasi-Synchronous
ECS
— Encryption Control Signal
OSD
— Onscreen Display
IBS
— In-Building Solutions
ACM
— Address Complete Message
RAD
— Recorded Announcement Device
SLIP
— Serial Line Internet Protocol
RLS
— Recursive Least Squares
SMSC
— Short Message Service Center
DMT
— Discrete Multi-tone Transmission
PT
— Payload Type (ATM)
BAOC
— Barring of All Outgoing Calls supplementary service
DCC
— Digital Control Channel
SSP
— Security Service Provider
FLN
— Fixed Line Network
ADTM
— Asynchronous Data Transfer Mode
EC
— Enhanced Cellular
SQL
— Specified Quality Level
P&A
— Privacy and Authentication
CCR
— Current Cell Rate (ATMF)
AAV
— Alternative Access Vendor
HDB3
— High-Density Bipolar Three-bit substitution
SM OFC
— Single-Mode Optical Fiber Cable
OIM
— Operations Interface Module
DNA
— Do Not Answer
COMB
— Combined
COBE
— Corporate Owned Business Only
FR
— Functional Requirement
DCO
— Dial Central Office
CALA
— Customer Address Location Area
ULP
— Upper Layer Protocol
VOFR
— Voice Over Frame Relay
VR
— Virtual Router
CLF
— Carrier Line Failure
PCIA
— Personal Communications Industry Association
VSC
— Vertical Service Code
A/D
— Analog-to-Digital converter
BCIX
— Berlin Commercial Internet Exchange
SAPI
— Service Access Point Identifier
VCC
— Voice Call Continuity
LTU
— Line Terminating Unit
GLT
— Great Lakes Telecom
EA
— expedited acknowledgement
PFE
— Power Feed Equipment
DSCS
— Defense Satellite Communication System
TSI
— time-slot interchange
AAL2
— ATM (Asynchronous Transmission Mode) Adaptation Layer 2
DSU
— Digital Service Unit
DOD
— Dial on Demand
FEBE
— Far End Block Error (SONET)
CT
— Cordless Telecommunications
EF&I
— Engineering, Furnishing and Installation
VCT
— Variable Cam Timing
SGCP
— Simple Gateway Control Protocol
MIN
— Mobile Identification Number
BSC
— Base Station Controller
USRT
— Universal Synchronous Receiver/Transmitter
COP
— Character Oriented Protocol
ESG
— Enhanced Service Gateway
RCT
— remote Control Terminal
DPT
— Dial Pulse Terminate
LXT
— Local Exchange Terminal
VLF
— Vertical-Laminar-Flow
MO
— Magneto-optic
CD
— Committee Draft
PTCL
— Pakistan Telecommunication Company Ltd
SDN
— Software Defined Network
BASIZE
— Buffer Allocation Size
ACNA
— Access Customer Name Abbreviation
AI
— Adapter Interface
CDPD
— Cellular Digital Packet Data
PGP
— Pretty Good Protection (encryption)
DF
— Direction Finding or Finder
SS7
— Signaling System 7
DMNG
— Digital Mobile News Gathering
AVT
— Audio Visual Telecommunications
BSS
— Broadband Switching System
TLP
— Transmission Level Point
DDM
— Data Distribution Manager
ACRE
— Authorization and Call Routing Equipment
PLCP
— Physical Layer Convergence Protocol (ATM)
DE
— Discard Eligible
PNM
— Pulse Number Modulation
TP
— Termination Point
TIMS
— Telephone Information Management System
DTW
— Dynamic Time Warping
XRF
— X-Ray Fluorescence
CIS
— Center for Integrated Systems
SAMI
— Structured Adjustment & Maintenance Interface
DLE
— Digital Local Exchange
Z
— Zulu Time
QPA
— Quality Performance Analysis
BAM
— Basic Access Module
IMTS
— Improved Mobile Telephone Service
CWTS
— China Wireless Telecommunication Standard
MNP
— Mobile Number Portability
CLI
— Calling Line Identification
DDSN
— Digital Derived Services Network
MC/MIC
— Mode Common/Mode Indicate Common
MOS
— Metal Oxide Semiconductor (FET Devices)
UCM
— Use Case Map
FB
— Fine Business
WNAP
— Wireless Network Access Point
HPN
— Home Phone Network
ANSI
— Advanced Network Signaling Input
FUD
— Fair Use Doctrine
TRX
— Tandem Repeater eXchange
SBX
— Small Business Exchange
VC
— Virtual Circuit (ATM)
ITU-T
— International Telecommunication Union - Telecommunications section
OST
— Office of Science and Technology
CM
— Connection Manager
SSU
— Synchronization Supply Unit
INMS
— Integrated Network Management System
ISD
— International Subscriber Dialling
DMI
— Desktop Management Interface (computing)
IOC
— Interoffice Channel
ATU-R
— ADSL (Asymmetric Digital Subscriber Line) Transceiver Unit - Remote terminal end
COI
— Community of Interest
PROV
— Provisioning
CEE
— Communaut? Economique Europ?enne
HU
— Hook Up
CNID
— Calling Number Identification Display
PTT
— Post Telegraph and Telecommunications
BIOS
— Basic Input-Output System
IVN
— Interactive Video Network
USF
— Universal Server Farm
MNOS
— Metal-nitride-oxide Semiconductor
LULT
— Line Unit/Line Termination
BONDING
— Bandwidth On Demand Interoperability Group
LVM
— Line Verification Module
SHR
— Self-Healing Ring
LSI
— Large-Scale Integration
PWM
— Pulse width modulation
AMOLED
— Active Matrix Organic Light-Emitting Diode
DACS
— Digital Access and Cross-Connect System
CDSL
— Consumer Digital Subscriber Line
MEH
— Mobile-Executed Handoff
CD-ROM
— Compact Disk-Read-Only Memory
TRCSL
— Telecommunications Regulatory Commission of Sri Lanka
LAT
— Local Area Transport (network)
DORA
— EV-DO (EVolution-Data Optimized) standard Revision A
DLT
— Digital Line Termination
CMT
— Commercial Metering Transponder
TCL
— Transverse Conversion Loss
LRB
— Loop Reverse Battery
ISSI
— Inter-Switching System Interface
NAM
— Number Assignment Module
LPDP
— Local Policy Decision Point
UNO
— Universal Network Operations
AA
— Auto-Answer
MBS
— Maximum Burst Size (ATM)
LTU
— Line Termination Unit
VLR
— Visitor Location Register
NCOS
— Network Class Of Service
TTC
— Telemetry Telecommand and Control
AEIMP
— Apple Event Interprocess Messaging Protocol
SCC
— Specialized Common Carrier
CSCW
— Computer-Supported Cooperative Work
CSP
— Converged Service Platform
INWATS
— INward Wide Area Telecommunications Service
LSMS
— Local Service Management System
MERIS
— medium-resolution imaging spectrometer
VCA
— Voice Connecting Arrangement
CAN
— Controller Area Network
ACMA
— Atlantic Cable Maintenance Agreement
CD ROM
— Compact Disc Read-Only Memory
CELP
— Code Excited Linear Prediction
WRED
— Weighted Random Early Detection
DCEF
— Distributed Cisco Express Forwarding
AARQ
— A-Associate Request
SMU
— Service Management Unit
CCH
— Common Channel Handler
AIS-V
— Alarm Indication Signal - Virtual
O
— objective
FESS
— Flywheel Energy Storage System
MDCP
— Media Device Control Protocol
WPBX
— Wireless Private Branch Exchange
VCR
— Videocassette Recorder
WATS
— Wide Area Telecommunications Service
NETBIOS
— Network Basic Input-Output System
WDSL
— Wireless Digital Subscriber Line
NICAD
— Nickel Cadmium
MMS
— Multimedia Message Service
ECDIS
— Electronic Chart Display Information System
ESA
— Enhanced Subscriber Authentication
ECC
— Emergency Communications Center
LCU
— Lightweight Computer Unit
ASAS
— All-Source Analysis System
NSN
— National Significant Number
AFRINIC
— African Network Information Centre
SYSADM
— System Administrator
TJB
— Telephone Junction Box
OTF
— On-The-Fly (data acquisition method)
DAF
— Directory Access Function
LCU
— Line Control Unit
ESDS
— Electrostatic Discharge Sensitive
DOV
— Data-Over-Voice
BFS
— Broadcast File System
TACSIM
— Tactical Simulation (Simulator)
DOITT
— Department of Information Technology and Telecommunications
LZ
— Lempel-Ziv compression algorithm
UDT
— Unreliable Data Transfer
HSCSWD
— High-Speed Circuit-SWitched Data
CEPT
— Conference of European Posts and Telecommunications
A/C
— Air Conditioner
AFCEA
— Armed Forces Communications and Electronics Association's
USPI
— Universal Serial Phone Interface
RTFM
— Read The Friendly Manual
DNA
— Digital Network Architecture
DEO
— Digital End Office
CLASS
— Cell Level ATM (Asynchronous Transfer Mode) Services Simulator
SR
— Service Request
FHSS
— Frequency Hopping Spread Spectrum
802.11 HR
— High data Rate IEEE 802.11 Wireless LAN protocol
INAP
— Intelligent Network Application Part
ATIS
— Alliance for Telecommunications Industry Solutions
FD
— Full Duplex
OCI
— object code insertion
CSL
— component sublayer
ATMS
— automatic transmission measuring system
DS0
— Digital Signal Zero
CCSS6
— Common Channel Signaling System # 6
UMTS
— Universal Mobile Telecommunications Standard
SHD
— Smart Handheld Device
AIS-P
— Alarm Indication Signal - Path
RLC
— Radio Link Control
SNI
— Service Node Interface
LRF
— Laser Range Finder
WAAS
— Wide Area Augmentation System
JMA
— Japanese Meteorological Agency
AAS
— Automatic Announcement Subsystem
DMB
— Disconnect and Make Busy
SINS
— Ship’s Inertial Navigation System
RCF
— Remote Call Forwarding
EKTS
— Electronic Key Telephone Set
VFL
— Visual Fault Locator
ATB
— All Trunks Busy
DBN
— Dial-Back Number
ADTS
— Ameritech Digital Transport Service
SPT
— System Page Table
NIMH
— Nickel-Metal Hydride
VGF
— Voice Grade Facility
ALT
— Automatic Link Transfer
GOS
— Gerry Otis Simpson
VDSL
— VHBR (Very High Bit Rate) Digital Subscriber Line
ADM
— Administration, Office of
EGPRS
— Enhanced General Packet Radio Service
NMS
— NetWare Management System
JDC
— Japan Digital Cellular
DACS
— Digital Access Carrier System
CYTA
— Cyprus Telecommunications Authority
SR
— Scanning Radiometer
DBF
— Digital Beam-Forming
MTS
— Message Transmission Subsystem
PVN
— Private Virtual Network
LMU
— Line Monitor Unit
WBMP
— Wireless Bitmap
CFS
— Call for Service
MRCA
— Most Recent Common Ancestor
FPLMTS
— Future Public Land Mobile Telecommunications System
CMAS
— Cellular Management System
D3
— Digital channel bank, Third generation
UTRAN
— UMTS (Universal Mobile Telecommunication System) Terrestrial Radio Access Network
WAW
— Wide Area Wireless
GOSIP
— Government Open System Interconnection Profile
E
— Exchange
TWX
— Teletypewriter Exchange (Telex)
MITS
— Metaphors for Integrated Telecommunications Services
PM
— Processable Mode
ACEK
— Authentication Encryption Key
TEM
— Transmission Electron Microscope
DCS
— Digital Cross-connect Switch
ISC
— International Switching Center
PTN
— Public Telephone Network
APS
— Advanced Power System
SASL
— Simple Authentication and Security Layer
SNI
— Subscriber Network Interface
APPN
— Advanced Peer-to-Peer Network
RBS
— Robbed Bit Signaling
CCITT
— Comite Consultatif International Telegraphique et Telephonique (now ITU-T)
NMC
— Nortel Matra Cellular
CS
— Connection Segment
SPI
— Security Parameters Index
C²
— Command and Control
NSDI
— National Spatial Data Infrastructure
TSG
— Telephone Security Group
DTS
— Digital Terminal Systems
MEECN
— Minimum Essential Emergency Communication Network
NARC
— Non-Automatic Relay Center
CPT
— Cellular Paging Teleservice
TRAC
— Totally Reconfigurable Analog Circuit
WIVO
— WIreless VelOcity
QOD
— Quality of Data
DS-1
— Digital Signal, Level 1
DAS
— Distributed Antenna System
TACS
— Total Access Cellular System
TDRS
— Tracking and Data Relay Satellites
RBT
— Ring Back Tone
SCE
— Service Creation Environment
ATIS
— Automatic Transmitter Identification System
BTN
— Billing Telephone Number
WLNP
— Wireless Local Number Portability
IDSL
— ISDN (Integrated Services Digital Network) Digital Subscriber Line
TP
— Transaction Processor
DDS
— Dataphone Digital Service (AT&T)
LEC
— Liquid Encapsulated Czochralski
SIGTRAN
— Signaling Transport
CSP
— Continuous Speech Processing
BTL
— Bell Telephone Laboratories, Inc.
DORK
— Disciples Of The Righteous King
DLC
— Digital Leased Circuit
LQR
— Line Quality Report
SMAS
— Service Management System
BPOP
— Building Point of Presence
ATACS
— Army Tactical Communications System
XWI
— XML (extensible markup language) for Wireless Images
HCV
— High Capacity Voice
MCPC
— Multiple Channels Per Carrier
TASI
— Time Assigned Speech Interpolation
DME
— Distributed Management Environment (OSF)
CVT
— Circuit Validation Test
RYP
— Russian Yellow Pages
TARP
— Target Identifier Address Resolution Protocol
AEE
— Agent Execution Environment
CCS
— Common Channel Signaling
AH
— Authentication Header
CAE
— Common Application Environment
AFIPS
— American Federation of Information Processing Societies
MLHG
— Multi-Line Hunt Group
CPN
— Customer Premise Network
PTM
— Point-To-Multipoint
CP
— Cell Phone
BC
— Basic Call
DTU
— Data Terminal Unit
DACS
— Digital Access Cross-Connect Switch
SCRC
— SCCP Routing Control
MP
— Master Processor
SVI
— Service Interception
BSVCI
— Broadcast Signaling Virtual Channel Identifier
ROSE
— Remote Operations Service Element
WBOK
— Wireless Broadband of Oklahoma
CUG
— Closed Users Group
ASP
— Active Signaling Protocol
ACL
— Asynchronous Connection-less Link
SIO
— Service Information Octet
SVW
— Sioux Valley Wireless
ADC
— Advanced Data Control
EDGE
— Enhanced Data for GSM (Global System for Mobile communication) Evolution
ICLD
— Inter-Channel Level Difference
MMJ
— Modified Modular Jack
MAC
— Message Authenticity Check
DPDCH
— Dedicated Physical Data Channel
JWG
— Joint Working Groupof
WDMW
— Web Directory for Mobile and Wireless
4G
— Fourth Generation
BOA
— Basic Object Adapter
DSX
— Digital Signal Cross-Connect
800
— Freephone
TMTC
— Telemetry and Telecommand
GEO
— Geostationary Earth Orbit
EADAS
— Engineering and Administrative Data Acquisition System
CU
— Cooling Unit
IDD
— International Direct Dialing
ACA
— Automatic Circuit Assurance
CIPOA
— Classical Internet Protocol over ATM (Asynchronous Transfer Mode)
AMP
— amplifier / amplification
TFL
— Telecom Fiji Limited
WAWS
— Washington Area Wideband System
STUN
— Simple Traversal of UDP (User Datagram Protocol) through NAT (Network Address Translation)
TSGR
— Transport System Generic Requirements
D4
— Digital channel bank, Fourth generation
CQ
— Communications Quality
FOE
— Fiber Optic Equipment
RCMAC
— Recent Change Memory Administration Center
QEDI
— Quod Erat Demonstrandum
VGC
— Voice Grade Channel
CMTS
— Cellular Mobile Telephone System
CCC
— Credit Card Calling
GTXC
— Global Telephone Exchange Carrier
EDT
— European Deaf Telephone
APR
— Alarm Processing Remote
NANP
— North American Numbering Plan
CM
— Common Mode
MOD
— Modulo
ASTE
— Advanced Systems and Telecommunications Equipment
MODEM
— modulation and demodulation
TAE
— Terminal Adapter Equipment
WCMP
— Wireless Control Message Protocol
UIH
— Unnumbered Information with Header check
SOR
— Statement of Requirements
CFNA
— Call Forwarding No Answer
FCFS
— First-Come, First-Served
MAPDU
— Management Application Protocol Data Unit
ABR
— Available Bandwidth Rate
SCMG
— SCCP Management
WGX
— Wireless Gateway Switch
ALC
— Automatic Line Controller
SLIC
— Subscriber Loop Interface Circuit
CCC
— CDMA Cluster Controller
SRU
— Search and Rescue Unit
RTU
— Right to Use
O/G
— Outgoing
CSLIP
— Compressed SLIP
DISA
— Direct Inward Switch Access
IMT-A
— International Mobile Telecommunications - Advanced
CLIP
— Caller Line Identification Presentation
MSG
— Management Steering Group
TPF
— Transmission Priority Field
OID
— Object Interaction Diagram
NF
— Not Found
YIP
— Your Internet Phone
VTA
— Vermont Telecommunications Authority
SS6
— Signalling System 6
MMC
— Minimum Monthly Charge
TX
— Transmit
RFH
— Remote Frame Handler
ELEC
— Enterprise Local Exchange Carrier
ADTS
— Automated Digital Terminal System
BHP
— Burst Header Packet
SDCCH
— Standalone Dedicated Control Channel
SH
— Shell
WEDE
— Wireless Enterprise Delivery Environment
UIF
— User Interface Framework
SEM
— Sionscanning Electron Microscopy
PRM
— Performance Report Message
TWX
— Teletypewriter Exchange Service
XC
— Cross-Connect
SMLC
— Serving Mobile Location Center
QNC
— Quick Net Connect
C/T
— Carrier to Noise Temperature Ratio
CMS
— Conversational Monitor System
WPC
— Wireless Personal Communications
LQD
— Line Quality Disturbance
ADAD
— Automatic Dialing Announcing Device
WLAP
— Wireless LAN (Local Area Network) Access Point
CSAA
— Central Service Area Authority
WDP
— Wireless Datagram Protocol
ZBTSI
— Zero Byte Time Slot Interchange
IOS
— Internet Over Satellite
ARS
— Automatic Route Selection
BWD
— backward
PNE
— Path Number Efficiency
ISTD
— International Subscriber Trunk Dialing
MFJ
— Modified Final Judgement
CTIT
— College of Telecommunications and Information Technology
PPV
— Pay-Per-View
AC
— Absorption Coefficient
SSU
— Stratospheric Sounding Unit (TOVS)
UPC
— Usage Parameter Control
EMV
— EuroPay, MasterCard, Visa
HUMAN
— High-speed Unlicensed Metropolitan Area Network
TED
— Triteal Enterprise Desktop
RSL
— Remote Serial Link