IWPC
| 1k |
in a quanity of 1,000 units |
|
2G |
Second
Generation Wireless Systems |
|
3DES |
Triple
data encryption standard |
|
3G |
Third
Generation Wireless Systems |
| 3G LTE | Third Generation Long Term Evolution |
|
3GPP |
Third-Generation
Partnership Program |
|
3R |
Regeneration,
Reshaping, and Retraining |
|
4B3T |
Four
Binary, Three Ternary |
|
4F/BDPR |
Four-Fiber
Bidirectional dedicated protection ring |
|
4F/BSPR |
Four-Fiber
Bidirectional Shared Protection Ring |
|
AAA |
Authentication,
Authorization, and Accounting |
|
AAL-[x] |
ATM
Adaptation [layer x] |
|
ABC |
Activity-Based
Costing |
|
ABR |
Available
Bit Rate |
|
ABS |
Automatic
Brake System |
|
AC |
Alternating
Current |
|
ACD |
Automatic
Call Distributor |
|
ACH |
Automated
Clearinghouse |
|
ACL |
Access
Control List |
|
ACLEP |
Adaptive
Code Excited Linear Prediction |
| ACLR | Adjacent Channel Leakage Ratio |
|
ACM |
Address
Complete Message |
|
ACP |
Adjacent
Channel Power |
|
ACPR |
Adjacent-Channel
Power Ratio |
|
ACR |
Alternate
Carrier Routing |
|
ACR |
Anonymous
Call Rejection |
| ACS | Adjacent Channel Sensitivity |
|
ACTS |
Advanced
Communications Technology Satellite |
|
A/D |
Analog-to-Digital |
|
ADC |
Analog-to-Digital
Converter |
|
ADM |
Add/Drop
Multiplexer |
|
ADPCM |
Adaptive
Differential Pulse Code Modulation |
|
ADS |
Add/Drop
Switch |
| ADS | Advanced Design System |
|
ADSI |
Analog
Display Services Interface |
|
ADSL |
Asymmetrical
Digital Subscriber Line |
|
AFA |
Adaptive
Frequency Agile |
|
AFE |
Analog
Front End |
| AFF | Analog Front-Forward |
|
AGC |
Automatic
Gain Control |
|
AGW |
Agent
Gateway |
|
AIM |
Advanced
Intelligent Messaging |
|
AIN |
Advanced
Intelligent Network |
|
ALI |
Automatic
Location Identification |
|
ALU |
Arithmetic
Logic Unit |
|
AM |
Amplitude
Modulation |
|
AMA |
Automatic
Messaging Account |
|
AMI |
Alternate
Mark Inversion |
|
AMI-C |
Automotive
Multimedia Industry Consortium |
|
AMPS |
Advanced
Mobile Phone System |
|
AN |
Access
Network |
|
ANI |
Automatic
Number Identification |
|
ANM |
Answer
Message |
|
ANSI |
American
National Standards Inst. |
|
ANX |
Automotive
Network Exchange |
|
AODV |
Ad-Hoc
on Demand Distance Vector |
|
AOL |
America
Online |
|
AON |
All-Optical
Network |
|
AP |
Access
Point |
|
AP |
Access
Provider |
|
APC |
Automatic
Power Control |
|
APCO |
Association
of Public-Safety Communications Officials-International |
|
API |
Application
Programmer’s Interface |
|
APON |
ATM
Passive Optical Network |
|
APS |
Antenna
Positioning System |
|
ARCNET |
Attached
Resource Computer Network |
|
ARI |
Assist
Request Instruction |
|
ARM |
Asynchronous
Response Mode |
|
ARMS |
Authentication,
Rating, Mediation, and Settlement |
|
ARP |
Address
Resolution Protocol |
|
ARPANET |
Advanced
Research Projects Agency Network |
|
ARPU |
Average
Revenue Per Customer |
|
A-Rx |
Analog
Receiver |
|
AS |
Application
Server |
|
AS |
Autonomous
System |
|
ASAM |
ATM
Subscriber Access Multiplexer |
|
ASC |
Accredited
Standards Committee |
|
ASCII |
American
Standard Code for Information Interchange |
|
ASE |
Amplified
Spontaneous Emission |
|
ASIC |
Application-Specific
Integrated Circuit |
|
ASIP |
Application-Specific
Instruction Processor |
|
ASK |
Amplifier
Shift Keying |
|
ASON |
Automatically
Switched Optical Network |
|
ASP |
Application
Service Provider |
|
ASR |
Access
Service Request |
|
ASR |
Answer-Seizure
Rate |
|
ASR |
Automatic
Service Request |
|
ASR |
Automatic
Speech Recognition |
|
ASSP |
Application-Specific
Standard Part |
|
ASTN |
Automatically
Switched Transport Network |
|
ASTN |
Analog
Switched Telephone Network |
|
ATC |
Automatic
Temperature Control |
|
ATIS |
Alliance
for Telecommunications Industry Solutions |
|
ATM |
Automated
Teller Machine |
|
ATM |
Asynchronous
Transfer Mode |
|
ATMF |
ATM
Forum |
|
ATP |
Analog
Twisted Pair |
|
ATU-C |
ADSL
Transmission Unit-CO |
|
ATU-R |
ADSL
Transmission Unit-Remote |
|
A-Tx |
Analog
Transceiver |
|
AUI |
Attachment
Unit Interface |
|
AVI |
Audio
Video Interleaved |
|
AWG |
Arrayed
Waveguide Grating |
|
AWGN |
Additive
White Gaussian Noise |
|
AYUTOS |
As-Yet-Un-Thought-Of
Services |
|
B2B |
Business
to Business |
|
B2C |
Business-To-Consumer |
|
BAF |
Bellcore
Automatic Message Accounting Format |
|
B-Box |
Breakout
Box |
|
BBS |
Bulletin
Board System |
|
BBI |
Broad
Band Internet |
|
BCSM |
Basic
Call State Model |
|
BDCS |
Broadband
Digital Cross-Connect System |
|
BDPR |
Bidirectional
Dedicated Protection Ring |
|
BE |
Border
Element |
|
BER |
Bit
Error Rate |
|
BERT |
Bit-Error-Rate
Test |
|
BGA |
Ball
Grid Array |
|
BGP |
Border
Gateway Protocol |
|
BH |
Busy
Hour |
|
BHCA |
Busy
Hour Call Attempt |
|
BI |
Bit
Rate Independent |
|
BICC |
Bearer
Independent Call Control |
|
BID |
Bit
Rate Identification |
|
BIP |
Bit
Interactive Parity |
|
B-ISDN |
Broadband
ISDN |
| BITS | Building Integrated Timing Supply |
|
BLEC |
Broadband
Local-Exchange Carrier |
|
BLEC |
Building
Local-Exchange Carrier |
|
BLES |
Broadband
Loop Emulation Services |
|
BLSR |
Bidirectional
Line-Switched Ring |
|
BML |
Business
Management Layer |
|
BOC |
Bell
Operating Company |
|
BOF |
Business
Operations Framework |
|
BOM |
Bill
of Materials |
|
BOND |
Back-Office
Network Development |
|
Boss |
Broadband
Operating System Software |
|
BPON |
Broadband
Passive Optical Network |
|
BPSK |
Binary
Phase Shift Keying |
|
B-RAS |
Broadband-Remote
Access Server |
|
BRI |
Basic
Rate Interface |
|
BRAN |
Broadband
Radio Access Networks |
|
BSA |
Business
Services Architecture |
|
BSC |
Base
Station Controller |
|
BSPR |
Bidirectional
Shared Protection Ring |
|
BSS |
Base-Station
System |
|
BSS |
Business
Support System |
|
BST |
Barium
Strontium Titanate |
|
BTA |
Basic
Trading Area |
|
BTS |
Base
Station Terminal Systems |
|
BTS |
Base
Transceiver Station |
|
BVR |
Best-Value
Routing |
|
BW |
Bandwidth |
| BWA | Broadband Wireless Access |
|
C/I |
Carrier
to Interference Ratio |
|
CA |
Call
Agent |
|
CAC |
Call
Admission Control |
|
CAC |
Carrier
Access Code |
|
CAC |
Connection
Admission Control |
|
CAD |
Computer-Aided
Design |
|
CAGR |
Compound
Annual Growth Rate |
|
CALEA |
Communications
Assistance to Law Enforcement Act |
|
CAM |
Computer-Aided
Manufacture |
|
CAMEL |
Customized
Application of Mobile Enhanced Logic |
|
CAP |
Competitive
Access Provider |
|
CAP |
Carrierless
Amplitude and Phase Modulation |
|
CAPEX |
Capital
Expenditure |
|
CAR |
Committed
Access Rate |
|
CARE |
Customer
Account Record Exchange |
|
CAS |
Channel-Associated
Signaling |
|
CAS |
Communications
Applications Specification |
|
CAT |
Conditional
Access Table |
|
CAT |
Computer
Aided Telephony |
|
CAT-5 |
Category
5 |
|
CATV |
Cable
Television |
|
C-band |
Conventional
Band |
|
CBDS |
Connectionless
Broadband Data Service |
|
CBR |
Constant
Bit Rate |
|
CBT |
Core-Based
Tree |
|
CC |
Control
Component |
|
CCB |
Customer
Care and Billing |
| CCDF | Complementary Cumulative Distribution Function |
|
CCF |
Call-Control
Function |
|
CCI |
Call
Clarity Index |
|
CCK |
Complementary
Code Keying |
|
CCITT |
Consultative
Committee on International Telephone and Telegraphy |
|
CCR |
Call-Completion
Ratio |
|
CCRR |
Co-Channel
Rejection Ratio |
|
CCS |
Common
Channel Signaling |
|
CD |
Chromatic
Dispersion |
|
CD |
Compact
Disc |
|
CDCF |
Conventional
Dispersion Compensation Fiber |
|
CDD |
Content
Delivery and Distribution |
|
CDDI |
Copper-Distributed
Data Interface |
|
CDMA |
Code-Division
Multiple Access |
| CDMA2000 | a 3G solution based on IS-95, which is the first CDMA-based digital cellular standard pioneered by Qualcomm |
|
CDMP |
Cellular
Digital Messaging Protocol |
|
CDMS |
Configuration
and Data Management ServerCDN |
|
CDN |
Control
Directory Number |
|
CDPD |
Cellular
Digital Packet Data |
|
CDR |
Call
Detail Record |
|
CDR |
Clock
and Data Recovery |
|
CD-ROM |
Compact
Disc-Read-Only Memory |
|
CDWDM |
Coarse
Wavelength Division Multiplexing |
|
CE |
Customer
Edge |
|
CEI |
Comparable
Efficient Interface |
|
CENELEC |
European
Committee for Electrotechnical Standardization |
|
CEO |
Chief
Executive Officer |
|
CEPT |
Centre
for Environmental Planning & Technology (CEPT), Ahmedabad, India and
European Conference of Postal and Telecommunications Administrations |
|
CER |
Customer
Edge Router |
|
CES |
Circuit
Emulation Service |
|
CERT |
Computer
Emergency Response Team |
|
CES |
Circuit
Emulation Service |
|
CESID |
Caller
Emergency Service Identification |
|
CEV |
Controlled
Environment Vault |
| cEVM | Composite Error Vector Magnitude |
|
CFB/NA |
Call
Forward Busy/Not Available |
|
CFO |
Chief
Financial Officer |
|
CFP |
Contention
Free Period |
| CFR | Crest Factor Reduction |
|
CHCS |
Composite
Health Care System |
|
CHN |
Centralized
Hierarchical Network |
|
C-HTML |
Compressed
HTML |
|
CGI |
Common
Gateway Interface |
|
CI |
Contents
Indicator |
|
CIC |
Cascaded
Integrator Comb |
|
CIC |
Circuit
Identification Code |
|
CID |
Caller
Identification |
|
CIMD2 |
Computer
Interface Message Distribution 2 |
|
CIM |
Common
Information Model |
|
CIO |
Chief
Information Officer |
|
CIP |
Classical
IP over ATM |
|
CIR |
Committed
Information Rate |
|
CIR |
Communications
Industry Researchers |
|
CIT |
Computer
Integrated Telephone |
|
CLASS |
Custom
Local-Area Signaling Services |
|
CLE |
Customer-Located
Equipment |
|
CLEC |
Competitive
Local Exchange Carrier |
|
CLI |
Command
Line Interface |
|
CLLI |
Common
Language Location Identifier |
|
CLR |
Circuit
Layout Record |
|
CM |
Cable
Modem |
|
CM&B |
Customer
Management and Billing |
|
CMIP |
Common
Management Information Protocol |
|
CMIS |
Common
Management Information Service Element |
|
CMOS |
Complementary
Metal-Oxide Semiconductor |
|
CMRR |
Common-Mode
Rejection Ratio |
|
CMRS |
Commercial
Mobile Radio Service |
|
CMTS |
Cable
Modem Termination System |
|
CNAM |
Calling
Name (also defined as “caller identification with name” and simply “caller
identification”) |
|
CNAP |
CNAM
Presentation |
|
CO |
Central
Office |
|
CODEC |
Coder/Decoder |
|
COFDM |
Coded
Orthogonal Frequency Division Multiplexing |
|
COGS |
Cost
of Goods Sold |
|
COI |
Community
Of Interest |
|
COO |
Chief
Operations Officer |
|
COPS |
Common
Open Policy Service |
|
CORBA |
A
standard from the Object Management Group (OMG) |
|
CORBA |
Common
Object Request Broker Architecture |
|
CORDIC |
Coordinate
Rotation Digital Computer |
|
CORE |
Council
OF Registrars |
|
CoS |
Class
of Service |
|
COT |
Central
Office Terminal |
|
COTS |
Commercial
Off-of-the-Shelf |
|
COW |
Cellsite
On Wheels |
|
CP |
Connection
Point |
|
CPAS |
Cellular
Priority Access Service |
|
CPC |
Calling-Party
Category |
|
CPC |
Calling-Party
Control |
|
CPC |
Calling-Party
Connected |
|
CPE |
Customer
Premise Equipment |
|
CPI |
Continual
Process Improvement |
|
CPL |
Call
Processing Language |
|
CPLD |
Complex
Programmable Logic Device |
|
CPN |
Calling-Party
Number |
|
CPNI |
Customer
Proprietary Network Information |
| CPRI | Common Public Radio Interface |
|
CPU |
Central
Processing Unit |
|
CRC |
Cyclic
Redundancy Code |
|
CRC |
Cyclic
Redundancy Check |
|
CRM |
Customer-Relationship
Management |
|
CRS |
Capacity,
Reach, and Speed |
|
CRTP |
Compressed
Real-time Transport Protocol |
|
CRV |
Call
Reference Value |
|
CS |
Client
Signal |
|
CS-[x] |
Capability
Set [x] |
|
CSA |
Carrier
Serving Area |
|
CSCE |
Converged
Service-Creation and Execution |
|
CSCW |
Computer
Supported Collaborative Work |
|
CS_IWF |
Control
Signal Interworking Function |
|
CSF |
Critical
Success Factors |
|
CSM |
Customer-Service
Manager |
|
CSMA |
Collision
Sensing Multiple Access |
|
CSMA/CA |
Carrier
Sensed Multiple Access with Collision Avoidance |
|
CSMA/CD |
Carrier
Sensed Multiple Access with Collision Detection |
|
CSN |
Circuit-Switched
Network |
|
CSP |
Chip
Scale Packaging |
|
CSP |
Communications
Service Provider |
|
CSP |
Content
Service Provider |
|
CSR |
Customer-Service
Representative |
|
CSU |
Channel
Service Unit |
|
CSV |
Circuit-Switched
Voice |
|
CT |
Computer
Telephony |
|
CT-2 |
Cordless
Telephony Generation 2 |
|
CTE |
Coefficient
of Thermal Expansion |
|
CTI |
Computer
Telephony Integration |
|
CTIA |
Cellular
Telecommunications Industry Association |
|
CTM |
Center
for Telecommunications Management |
|
CTO |
Chief
Technology Officer |
|
CUG |
Closed
User Group[ |
|
CVD |
Chemical
Vapor Deposition |
|
CW |
Continuous
Wave |
|
CWD |
Centralized
Wavelength Distribution |
|
CWDM |
Coarse
Wavelength Division Multiplexing |
|
CWIX |
Cable
and Wireless Internet Exchange |
| D/A | Digital-To-Analog |
|
DAC |
Digital
Access Carrier |
| DAC | Digital to Analog Converter |
|
DACS |
Digital
Access Cross-Connect System |
|
DAM |
DECT
Authentication Module |
|
DAMA |
Demand
Assigned Multiple Access |
|
D-AMPS |
Digital
Advanced Mobile Phone Service |
|
DAB |
Digital
Audio Broadcasting |
|
DARPA |
Defense
Advanced Research Projects Agency |
|
DAVIC |
Digital
Audio Video Council |
|
dB |
Decibel(s) |
|
dBM |
Decibel
reference to 1 milliwatt |
|
DB |
Database |
| DBM | Double Balanced Mixer |
|
DBrn |
Decibels
above reference noise |
|
DBS |
Direct
Broadcast Satellite |
|
DC |
Direct
Current |
|
DCC |
Data
Communications Channel |
|
DCF |
Discounted
Cash Flow |
|
DCF |
Dispersion
Compensation Fiber |
|
DCLEC |
Data
Competitive Local-Exchange Carrier |
|
DCM |
Dispersion
Compensation Module |
|
DCN |
Data
Communications Network |
|
DCOM |
Distributed
Component Object Model |
|
DCS |
Distributed
Communications System |
|
DCS |
Digital
Cellular System |
|
DCS |
Digital
Cross-connected System |
|
DCS |
Distributed
Call Signaling |
|
DCT |
Discrete
Cosine Transform |
|
DDC |
Digital
Down Converter |
|
DDI |
DDI
Corporation. Provider of telecom services in Japan |
|
DDN |
Defense
Data Network |
| DDR | Double Data Rate |
|
DDS |
Dataphone
Digital Service |
|
DDS |
Direct
Digital Synthesis |
|
DECT |
Digital
European Cordless Telephone |
|
DECT |
Digital
European Cordless Telecommunication |
|
DEMARC |
Demarcation
point |
|
DEMS |
Digital
Electronic Messaging Service |
|
DEMUX |
De
Multiplex |
|
DFB |
Distributed
Feedback |
|
DFC |
Dedicated
Fiber/Coax |
|
DFE |
Digital
Front End |
| DFT | Design for Test |
|
DGD |
Differentiated
Group Delay |
|
DGFF |
Dynamic
Gain Flattening Filter |
|
DHCP |
Dynamic
Host Configuration Protocol |
|
DiffServ |
Differentiated
Services |
|
DIN |
Digital
Information Network |
|
DIS |
Distributed
Interactive Simulation |
|
DITF |
Disaster
Information Task Force |
|
DLC |
Digital
Loop Carrier |
|
DLCI |
Data-Link
Connection Identifier |
|
DLE |
Digital
Loop Electronics |
|
DLEC |
Data
Local-Exchange Carrier |
|
DLR |
Design
Layout Report |
|
DM |
Dense
Mode |
|
DMD |
Dispersion
Management Device |
|
DMS |
Digital
Multiplex System |
|
DMT |
Discrete
Multitone |
|
DN |
Distinguished
Name |
|
DNS |
Domain
Name Server |
|
DNS |
Domain
Naming System |
|
DOC |
Department
of Communications |
|
DOCSIS |
Data
Over Cable Service Interface Specifications |
|
DOD |
Department
of Defense |
|
DOJ |
Department
of Justice |
|
DoS |
Denial
of Service |
|
DOS |
Disk
Operating System |
|
DOSA |
Distributed
Open Signaling Architecture |
|
DOT |
Department
Of Transportation |
|
DOW |
Day
Of Week |
|
DP |
Detection
Point |
|
DPC |
Destination
Point Code |
| DPD | Digital Pre-Distortion |
|
DPE |
Distributed
Processing Environment |
| Dpd | Dynamic Predistorted |
|
DPT |
Dial
Pulse Terminate |
|
DqoS |
Dynamic
Quality of Service |
|
D-Rx |
Digital
Receiver |
|
DRAM |
Dynamic
Random Access Memory |
|
Ds-[x] |
Digital
Signal [level x] |
|
DSAA |
DECT
Standard Authentication Algorithm |
|
DSC |
DECT
Standard Cipher |
|
DSCP |
DiffServ
Code Point |
|
DSF |
Dispersion-Shifted
Fiber |
|
DSI |
Detailed
Spectrum Investigation |
|
DSL |
Digital
Subscriber Line |
|
DSLAM |
Digital
Subscriber Line Access Multiplexer |
|
DSLAS |
DSL-ATM
Switch |
|
DSS |
Digital
Satellite System |
|
DSP |
Digital
Signal Processor |
|
DSP |
Digital
Service Provider |
|
DSRC |
Dedicated
Short Range Communication |
|
DSS |
Decision
Support System |
|
DSSS |
Direct
Sequence Spread Spectrum |
|
DSU |
Data
Service Unite |
|
DSU |
Digital
Service Unite |
|
DTH |
Direct
to Home |
|
DTMF |
Dual-Tone
Multifrequency |
|
DTV |
Digital
Television |
|
D-Tx |
Digital
Transceiver |
|
DUC |
Digital
Up Converter |
|
DUT |
Device
Under Test |
|
DVB |
Digital
Video Broadcast |
|
DVB-RCS |
Digital
Video Broadcasting-Return Channel System |
|
DVB-RCST |
Digital
Video Broadcasting-Return Channel System Terminal |
|
DVC |
Dynamic
Virtual Circuit |
|
DVD |
Digital
Video Disc |
|
DVMRP |
Distance
Vector Multicast Routing Protocol |
|
DVOD |
Digital
Video On Demand |
|
DVR |
Digital
Video Recording |
|
DWDM |
Dense
Wavelength Division Multiplexing |
|
DXC |
Digital
Cross-Connect |
|
E1 |
International
equivalent of T1 |
|
E911 |
Enhanced
911 |
|
EAI |
Enterprise
Application Integration |
|
EAN |
European
Article Numbering Association |
|
EAS |
Electronic
Article Surveillance |
|
EBITDA |
Earnings
Before Interest, Taxes, Depreciation, and Amortization |
| Eb/NO | Energy-per-bit to Noise Density Ratio |
|
EC |
Electronic
Commerce |
|
ECD |
Echo-Cancelled
Full-Duplex |
|
ECRM |
Echo
Canceller Resource Module |
|
ECTF |
Enterprise
Computer Telephony Forum |
|
EDA |
Electronic
Design Automation |
|
EDD |
Electronic
Communications Committee (of CEPT) |
|
EDF |
Electronic
Distribution Frame |
|
EDF |
Erbium-Doped
Fiber |
|
EDFA |
Erbium
Doped Fiber Amplifier |
|
EDGE |
A
modulation scheme that is more bandwidth efficient than the Gaussian
pre-filtered minimum shift keying (GMSK) modulation used in the GSM standard |
| EDGE | Enhanced Data Rates for GSM Evolution |
|
EDI |
Electronic
Data Interchange |
|
EDSX |
Electronic
Digital Signal Cross-Connect |
|
EECU |
Electronic
Engine Control Unit |
|
EEPROM |
Electrically
Erasable Programmable Read-Only Memory |
|
EFM |
Ethernet
in the First Mile |
|
EFT |
Electronic
Funs Transfer |
|
EIRP |
Effective
Isotropic Radiated Power |
|
EJB |
Enterprise
Java Beans |
|
ELAN |
Emulated
Local-Area Network |
|
ELEC |
Enterprise
Local-Exchange Carrier |
|
EM |
Element
Manager |
| EM | Electro-Magnetic |
|
EMC |
Electromagnetic
Compatibility |
|
EMI |
Electro-magnetic
Interference |
|
EML |
Element-Management
Layer |
|
EMS |
Electronic
Messaging System |
|
EMS |
Element-Management
System |
|
EMS |
Enterprise
Messaging Server |
|
EN |
European
Norm |
|
ENUM |
Telephone
Number Mapping |
|
E-O |
Electrical-to-Optical |
|
EO |
End
Office |
|
EoA |
Ethernet
over ATM |
|
EOC |
Embedded
Operations Channel |
|
EoVDSL |
Ethernet
over VDSL |
|
EPD |
Early
Packet Discard |
|
EPDeS |
Electronic
Product Design System |
|
Epon |
Ethernet
PON |
|
EPROM |
Erasable
Programmable Read-Only Memory |
|
ERC |
Emergency
Response Center |
|
ERO |
European
Radiocommunications Office |
|
ERP |
Enterprise
Resource Planning |
|
ESCON |
Enterprise
System Connection |
|
ERTICO |
A
unique international public/private partnership for Intelligent Transport
Systems (ITS) in Europe |
|
ESA/ESTEC |
European
Space Agency/European Space and Technology Research Center |
|
ESD |
Electrostatic
Discharge |
|
ESMR |
Enhanced
Specialized Mobile Radio |
|
ESN |
Electronic
Serial Number |
| ET | Envelope Trackin |
|
ETC |
Establish
Temporary Connection |
|
EtherLEC |
Ethernet
Local Exchange Carrier |
|
ETI |
Ensemble
Transport Interface |
|
ETRI |
Electronics
and Telecommunication Research Institute |
|
ETL |
Extraction,
Transformation, and Load |
|
ETOM |
e-Telecom
Operations Map |
|
ETS |
European
Telecommunication Standard |
|
ETSI |
European
Telecommunications Standards Institute |
|
EU |
European
Union |
| EVM | Error Vector Magnitude |
|
EXC |
Electrical
Cross-Connect |
|
EURESCOM |
European
Institute for Research and Strategic Studies in Telecommunications |
|
FAB |
Fulfillment,
Assurance, and Billing |
|
FAQ |
Frequently
Asked Question |
|
FBG |
Fiber
Bragg Grating |
|
FCAPS |
Fault,
Configuration, Accounting, Performance, and Security |
|
FCC |
Federal
Communications Commission |
|
FCI |
Furnish
Charging Information |
|
FCIF |
Flexible
Computer-Information Format |
|
FDA |
Food
and Drug Administration |
|
FDD |
Frequency
Division Duplex |
|
FDDI |
Fiber
Distributed Data Interface |
|
FDF |
Fiber
Distribution Frame |
|
FDM |
Frequency
Division Multiplex |
|
FDMA |
Frequency
Division Multiple Access |
|
FDS-1 |
Fractional
DS-1 |
|
FE |
Extended
Framing |
|
FEC |
Forward
Error Correction |
|
FEM |
Finite-Element
Method |
|
FEPS |
Facility
and Equipment Planning System |
|
FER |
Frame
Error Rate |
|
FET |
Field-Effect
Transistor |
|
FEXT |
Frequency
Hopping Spread Spectrum |
|
FFT |
Fast
Fourier Transform |
|
FFT |
Fast
Fourier Transform to the Communications Engineer |
|
FFT |
Fired
Film Thickness to the Thick Film Process Engineer |
|
FHSS |
Frequency-Hopping,
Spread Spectrum |
|
FIC |
Fast
Information Channel |
|
FICON |
Fiber
Connection |
|
FIDC |
Fast
Information Data Channel |
|
FIFO |
First-In,
First-Out |
|
FIR |
Finite
Impulse Response |
|
FITL |
Fiber-In-The-Loop |
|
FM |
Fault
Management |
|
FM |
Frequency
Modulation |
|
FNPRM |
Further
Notice Of Proposed Rulemaking |
|
FOC |
Firm
Order Confirmation |
|
FOF |
Flex-on-Foam |
|
FOT |
Fiber-Optic
Terminal |
|
FOTS |
Fiber-Optic
Transmission System |
|
FP |
Fabry-Perot
[laser] |
|
F-PAD |
Fixed
Program Associated Data |
|
FPB |
Flex
Parameter Block |
|
FPGA |
Field
Programmable Gate Array |
|
FPGA |
Fine-Pitch
Ball Grid Array |
|
FPLMTS |
Future
Public Land Mobile Telephone System |
|
FPP |
Fast-Packet
Processor |
|
FR |
Frame
Relay |
|
FRAD |
Frame-Relay
Access Device |
|
FSAN |
Full-Service
Access Network |
|
FSC |
Framework
Services Component |
|
FSK |
Frequency
Shift Keying |
|
FSN |
Full-Service
Network |
|
FSS |
Frequency
Selective Surface |
|
FT |
Fixed-Radio
Termination |
|
FT1 |
Fractional
T1 |
|
FTC |
Federal
Trade Commission |
|
FTE |
Full-Time
Equivalent |
|
FTP |
File
Transfer Protocol |
|
FTP3 |
File
Transfer Protocol 3 |
|
FTT |
Failure
to Thrive |
|
FTTB |
Fiber-To-The-Building |
|
FTTC |
Fiber-To-The-Curb |
|
FTTCab |
Fiber-To-The-Cabinet |
|
FTTEx |
Fiber-To-The-Exchange |
|
FTTH |
Fiber-To-The-Home |
|
FTTN |
Fiber-To-The-Neighborhood |
|
FTTS |
Fiber-To-The-Subscriber |
|
FTTx |
Fiber-To-The-x |
|
FWA |
Fixed
Wireless Access |
|
FWM |
Four-Wave
Mixing |
|
FX |
Foreign
Exchange |
|
G3 |
[see
3G] |
|
GA |
Genetic
Algorithm |
|
GaAs |
Gallium
Arsenide |
|
GaN |
Gallium
Nitride |
|
Gb |
Gigabit |
|
Gb |
Gigabyte |
|
GbE |
Gigabit
Ethernet [also GE] |
|
Gbps |
Gigabit
per second |
| GC1115 | Model of CFR processor |
|
GCRA |
Generic
Cell Rate Algorithm |
|
GDIN |
Global
Disaster Information Network |
|
GDMO |
Guidelines
for the Definition of Managed Objects |
|
GE |
[
see GbE] |
|
GEO |
Geo-stationary
Earth Orbit |
|
GEO |
Geosynchronous
Earth Orbit |
|
GETS |
Government
Emergency Telecommunications Service |
|
GFF |
Gain
Flattening Filter |
|
GFR |
Guaranteed
Frame Rate |
|
GFSK |
Gaussian
Filtered Frequency Shift Keying |
|
GHZ |
Gigahertz |
|
GIC |
Gigabit
Interface Converter |
| GIF | Graphics Interface Format |
| GIS | Geographic Information Services |
| GKMP | Group Key Management Protocol |
| GMII | Gigabit Media Independent Interface |
| GMLC | Gateway Mobile Location Center |
| GMPCS | Global Mobile Personal Communications Services |
| GMPLS | Generalized MPLS |
|
GMSK |
Gaussian
Minimum Shift Keying |
| GNP | Gross National Product |
| GOCC | Ground Operations Control Center |
|
GPF |
General
Protection Fault |
|
GPIB |
General-Purpose
Interface Bus |
|
GPRS |
General
Packet Radio Service |
|
GPS |
Global
Positioning System |
| GR | Generic Requirement |
| GRASP | Greedy Randomized Adaptive Search Procedure |
| GSA | Global Mobile Suppliers Association |
|
GSM |
Global
System for Mobile Communications |
| GSMP | Generic Switch Management Protocol |
|
GSO |
Geostationary
Orbit (Also Geosynchronous) |
| GSR | Gigabit Switch Router |
| GTT | Global Title Translation |
| GUI | Graphical User Interface |
| GVD | Group Velocity Dispersion |
| GW | Gateway |
| HBO | Home Box Office |
|
HBT |
Heterojunction
Bipolar Transistor |
| HCC | Host Call Control |
| HD | Home Domain |
|
HDI |
High
Density Interconnects |
| HDLC | High-Level Data-Link Control |
| HDML | Handheld Device Markup Language |
|
HDR |
High
Data Rate |
| HDSL | High-Bit Rate DSL |
| HDT | Host Digital Terminal |
| HDTV | High-Definition Television |
| HDVMRP | Hierarchical Distance Vector Multicast Routing Protocol |
| HEC | Head Error Control / Head Error Check |
| HEPA | High-Efficiency Particulate Arresting |
|
HEMT |
High
Electron Mobility Transistor |
| HFC | Hybrid Fiber/Coax |
| HIDS | Host Intrusion Detection System |
|
HIPERLAN |
High
Performance Radio Local Area Network |
| HLR | Home Location Register |
| HMIC | Heterolitic Microwave Integrated Circuit |
| HN | Home Network |
| HOM | High-Order Mode |
| HomePNA | Home Phoneline Networking Alliance [also HomePNA2] |
| Home RF | Home Radio Frequency Working Group |
| HPC | High Probability of Completion |
| HPO | High-Performance Option |
| HQ | Headquarters |
|
HSCSD |
High-Speed
Circuit-Switched Data |
| HSD | High-Speed Data |
|
HSDPA |
High
Speed Downlink Packet Access |
| HSIA | High-Speed Internet Access |
| HSP | Hosting Service Provider |
|
HTCC |
High
Temperature Co-Fired Ceramic |
| HTML | Hypertext Markup Language |
|
HTS |
High
Temperature Superconductor |
|
HTTP |
Hypertext
Transfer Protocol |
| HVAV | Heating, Ventilating and Air-Conditioning |
| HW | Hardware |
|
I
and Q |
In-Phase
and Quadrature |
|
I/O |
Input/Output |
| IAD | Integrated Access Device |
| IAM | Initial Address Message |
| IAS | Integrated Access Service / Internet Access Server |
| IAST | Integrated Access, Switching and Transport |
| IAT | Inter-Arrival Time |
| IBC | Integrated Broadband Communications |
|
IC |
Integrated Circuit |
| ICD | Internet Call Diversion |
| ICDR | Internet Call Detail Record |
|
ICI |
Inter
Carrier Interference |
| ICL | Intercell Linking |
| ICMP | Internet Control Message Protocol |
|
ICNIRP |
International
Commission on Non-ionsing Radiation Protection International
Telecommunications |
| ICP | Integrated Communications Provider / Intelligent Communications Platform |
| ICS | Integrated Communications System |
| ICW | Internet Call Waiting |
| IDC | Internet Data Center / International Data Corporation |
| IDE | Integrated Development Environment |
| IDES | Internet Data Exchange System |
| IDF | Intermediate Distribution Frame |
| IDFS | Intelligent Dynamic Frequency Selection |
| IDL | Interface Definition Language |
| IDLC | Integrated Digital Loop Carrier |
| IDS | Intrusion Detection System |
| IDSL | Integrated Services Digital Network DSL |
|
IDU |
Indoor
Unit |
|
IEC |
International
Electrotechnical Commission |
|
IEEE |
The
Institute of Electrical and Electronics Engineers |
| I-ERP | Integrated Enterprise Resource Planning |
| IETF | Internet Engineering Task Force |
|
IF |
Intermediate
Frequency |
|
IFFT |
Inverse
Fast Fourier Transform |
| IFITL | Integrated [Services Over] Fiber-In-The-Loop |
| IFMA | International Facility Managers Association |
| IFMP | Ipsilon Flow Management Protocol |
| IGMP | Internet Group Management Protocol |
| IGP | Interior Gateway Protocol |
| IGRP | Interior Gateway Routing Protocol |
| IGSP | Independent Gateway Service Provider |
| IHL | Internet Header Length |
| IIP | Third-order Intercept Point |
| IIS | Internet Information Server |
| ILA | In-Line Amplifier |
|
ILEC |
Incumbent
Local Exchange Carrier |
| ILMI | Interim Link Management Interface |
|
IM |
Intermodulation |
| IMA | Inverse Multiplexing Over ATM |
|
IMAPS |
International
Microelectronics and Packaging Society |
|
IMD |
Intermodulation
Distortion |
| IMRP | Internet Multicast Routing Protocol |
| IMSI | International Mobile Subscriber Identification |
| IMT | Intermachine Truck / International Mobile Telecommunications |
| IMTC | International Multimedia Teleconferencing Consortium |
| IN | Intelligent Network |
| INAP | Intelligent Network Application Part |
| INAP AU | INAP Adaptation Unit |
| INE | Intelligent Network Element |
| InfoCom | Information Communication |
| INM | Integrated Network Management |
| INMD | In-Service, Nonintrusive Measurement Device |
|
INT |
[Point-To-Point] Interrupt |
| InterNIC | Internet Network Information Center |
| IntServ | Integrated Services |
| I/O | Input/Output |
| IOF | Interoffice Facility |
| IOS | Intelligent Optical Switch |
|
IP |
Internet
Protocol |
|
IP3 |
3rd
Order Intercept |
| IPBX | Internet Protocol Private Branch Exchange |
| IPcoms | Internet Protocol Communications |
| IPDC | Internet Protocol Device Control |
| IPDR | Internet Protocol Data Record |
| IPe | Intelligent Peripheral |
| IPG | Intelligent Premises Gateway |
|
IPO |
Initial
Placement Offering |
| IPOa | Internet Protocol Over ATM |
| IPQoS | Internet Protocol Quality of Service |
| IPSec | Internet Protocol Security |
| IPTel | IP Telephony |
| IPv6 | Internet Protocol Version 6 |
| IPX | Internet Package Exchange |
| IQ | In-phrase and Quadrature |
| IR | Infrared |
|
IrDA |
Infrared
Data Access |
| IRU | Indefeasible Right To User |
|
IS |
Interim
Standard |
|
IS-54 |
Interim
Standard-54 |
|
IS-95 |
Interim
Standard-95 |
|
IS-136 |
Interim
Standard-136 |
|
IS-533 |
Interim
Standard-533 |
| IS-IS | Intermediate System to Intermediate System |
|
ISA |
Industry
Standard Architecture |
| ISAPI | Internet Server Application Programmer Interface |
| ISC | Integrated Service Carrier / International Softswitch Consortium |
| ISDF | Integrated Service Development Framework |
|
ISDN |
Integrated
Services Digital Network |
| ISDN-BA | ISDN Basic Access |
| ISDM-PRA | ISDN Primary Rate Access |
| ISEP | Intelligent Signaling Endpoint |
|
ISI |
Inter
Symbol Interference |
|
ISM |
Industrial,
Scientific and Medical |
|
ISO |
International
Standards Organization |
| ISOS | Integrated Software On Silicon |
|
ISP |
Internet
Service Provider |
| ISUP | ISDN User Part |
| ISV | Independent Software Vendor |
| IT | Information Technology / Internet Telephony |
| ITN | Impedance Transforming Network |
|
ITS
America |
Intelligent
Transportation Society of America |
| ITSP | Internet Telephony Service Provider |
| ITTP | Information Technology Infrastructure Library |
|
ITU |
International
Telecommunication Union |
| ITU-T | ITU-Telecommunications Standardization Sector |
| ITV | Internet Television |
|
IVI |
Intelligent
Vehicle Initiative |
| IVR | Interactive Voice Response |
| IVRU | Interactive Voice-Response Unit |
| IWF | Interworking Function |
|
IWPC |
International
Wireless Packaging Consortium |
| IWU | Interworking Unit |
|
IXC |
Inter-exchange
Carrier |
| JAIN | Java APIs for Integrated Networks |
|
JAMA |
Japanese
Automobile Manufacturers Association |
| JCAT | Java Coordination and Transactions |
| JCC | Jain Call Control |
| JCP | Java Community Process |
| JDMK | Java Dynamic Management Kit |
|
JEDEC |
Joint
Electron Device Engineering Council |
| JIT | Just in Time |
| JMAPI | Java Management Application Programming Interface |
| JMX | Java Management Extension |
|
JPEG |
Joint
Photographic Experts Group |
| JSCE | JAIN Service-Creation Environment |
| JSIP | Java Session Initiation Protocol |
| JSLEE | JAIN Service Logic Execution Environment |
|
JSP |
Java
Server Pages |
|
J-TACS |
Japan
Total Access Communications System |
| JTAG | Joint Test Action Group |
| JTAPI | Java Telephony Application Programming Interface |
| JTRS | Joint Tactical Radio Systems |
| JVM | Java Virtual Machine |
|
Ka-BAND |
Precisely
refers to Military Designation 18-26.5 GHz.
However, generally used to refer to 20/30 GHz Communications band
allocations |
| kbps | kilobits per second |
|
KGD |
Known
Good Die |
| kHz | Kilohertz |
| km | Kilometer |
|
Ku-BAND |
Radio
Spectrum in the 10.9 GHz to 17 GHz range used by satellite communication
systems |
| L2F | Layer-2 Forwarding |
| L2TP | Layer-2 Tunneling Protocol |
| LAC | LCTP Access Concentrator |
| LAI | Location Area Identity |
|
LAN |
Local
Area Network |
| LANE | Local-Area Network Emulation |
| LATA | Local Access and Transport Area |
| L-Band | Long Band |
| LBS | Location-Based Services |
| LC | Local Convergence |
|
LCC |
Leadless
Chip Carrier |
| LCD | Liquid Crystal Display |
| LCP | Link Control Protocol |
|
LCR |
Low
Chip Rate |
| LCUG | Local Competition User Group |
| LD | Laser Diode / Long Distance |
| LDAP | Lightweight Directory Access Protocol |
| LD-CELP | Low Delay-Code Excited Linear Prediction |
|
LDMOS |
Laterally
Diffused Metal Oxide Silicon |
| LDMOS | Laterally Diffused Metal Oxide Semiconductor |
|
LDO |
Low
Drop-Out |
| LDP | Label Distribution Protocol |
| LDS | Local Digital Service |
| LE | Line Equipment / Local Exchange |
| LEAF | Large-Effective-Area Fiber |
|
LEC |
Local
Exchange Carrier |
| LED | Light-Emitting Diode |
|
LEO |
Low Earth Orbit |
| LEOS | Low Earth-Orbiting Satellite |
| LER | Label Edge Router |
| LES | Loop Emulation Service |
|
LFBGA |
Low
Profile Fine Pitch Ball Grid Array |
|
LGA |
Land
Grid Array |
| LIDB | Line Information Database |
| LL | Long Line |
| LLC | Logical Link Control |
|
LMCS |
Local
Multipoint Communications System |
|
LMDS |
Local
Multipoint Distribution Service |
| LMN | Local Network Management |
| LMOS | Loop Maintenance Operation System |
| LMP | Link Management Protocol |
| LMS | Loop-Management System / Loop-Monitoring System / Link-Monitory System |
|
LNA |
Low-Noise
Amplifier |
| LNNI | LANE Network-To-Network Interface |
|
LNP |
Local
Number Portability |
| LNS | L2TP Network Server |
|
LO |
Local
Oscillator |
| LOI | Letter of Intent |
| LOL | Loss of Lock |
|
LOS
|
Line
of Sight/Loss of Signal |
|
LPPC |
Low
Profile Chip Carrier |
|
LPF |
Low-Pass
Filter |
| LP-SDRAM | Low Power Static Random Access Memory |
| LQ | Listening Quality |
| LRN | Local Routing Number |
| LSA | Label Switch Assignment/Link State Advertisement |
| LSB | Location-Sensitive Billing |
|
LSGAC |
Local-State
Governmental Advisory Committee |
|
LSI |
Large
Scale Integration |
| LSMS | Local Service Management System |
| LSO | Local Service Office |
| LSP | Label-Switched Path |
| LSR | Label-Switched Router/Leaf Setup Request/Local Service Request |
| LT | Line Terminator/Logical Terminal |
|
LTCC |
Low-Temperature
Co-Fired Ceramic |
| LTE | Lite Terminating Equipment |
| LTE | Long Term Evolution |
| LUNI | LANE User Network Interface |
|
LVD |
Low
Voltage Directive |
| LX | Local Exchange |
| M2PA | Message Transfer Protocol 2 Peer-to-Peer Adaptation |
| M2UA | Message Transfer Protocol 2-user Adaptation Layer |
| M3UA | Message Transfer Protocol 3-user Adaptation Layer |
|
MAC |
Media
(Medium) Access Control |
| MADU | Multiwave Add/Drop Unit |
|
MAN |
Metropolitan
Area Network |
| MAP | Mobile Applications Part |
| MAS | Multiple-Application Selection |
| MB | Megabyte |
| Mb | Megabit |
| MBAC | Measurement-Based Admission Control |
|
MBE |
Molecular
Beam Epitaxy |
| MBGP | Multicast Border Gateway Protocol |
| MBone | Multicast Backbone |
| Mbps | Megabits Per Second |
| MC | Multipoint Controller |
| MCC | Mobile Country Code |
|
MCI |
Multiplex
Configuration Information |
|
MCMs |
Multi-Chip
Modules |
|
MCS |
Multipoint
Communications Systems |
| MCU | Multipoint Control Unit |
| MDF | Main Distribution Frame |
|
MDS |
Multipoint
Distribution Systems |
| MDSL | Multiple DSL |
| MDTP | Media Device Transport Protocol |
|
MDU |
Multiple
Dwelling Unit |
| MEGACO | Media Gateway Control |
|
MEMS |
Micro-electromechanical
Systems |
|
MEO |
Medium
Earth Orbit |
| MESFET | Metal Schottky Field Effect Transistor |
| MExE | Mobile Execution Environment |
| MFJ | Modified Final Judgment |
| MG | Media Gateway |
| MGC | Media Gateway Controller |
| MGCP | Media Gateway Control Protocol |
|
MHz |
Megahertz |
| MIB | Management Information Base |
| MII | Media Independent Interface |
| MIME | Multipurpose Internet Mail Extensions |
|
MIN |
Mobile
Identification Number |
|
MIPS |
Millions
of Instructions Per Second |
| MIS | Management Information System |
| MITI | Ministry of International Trade and Industry (Japan) |
|
MLC |
Multi
Layer Products |
| MLT | Mechanized Loop Testing |
| MM | Mobility Management |
|
MMAC |
Million
Multiply Accumulate Operations |
|
MMACPC |
Multimedia
Access Communication Systems Promotional Council |
|
MMDS |
Multichannel
Multipoint Distribution Service |
|
MMIC |
Monolithic
Microwave Integrated Circuit |
| MMPP | Markov-Modulated Poisson Process |
|
MMS |
Multi-Media
Messaging |
| MMusic | Multiparty Multimedia Session Control [working group] |
| MNC | Mobile Network Code |
| MOM | Message-oriented Middleware |
| MOMO | Multiple In, Multiple Out |
| MON | Metropolitan Optical Network |
| MOP | Method of Procedure |
| MOS | Mean Opinion Score |
|
MOSFP |
Multicast Open Shortest Path First |
|
MOT |
Multimedia
Object Transfer |
|
MOU |
Minutes
of Use |
|
MoU |
Memorandum
of understanding |
| MPC | Mobile Positioning Center |
|
MPEG |
Motion
Picture Expert Group |
| MPI | Message Passing Interface |
| MPLambdaS | Multiprotocol Lambda Switching |
| MPLS | Multiprotocol Label Switching |
| MPOA | Multiprotocol Over ATM |
| MPOE | Multiple Point of Entry |
| MPOP | Metropolitan Point of Presence |
| MPP | Massively Parallel Processor |
| MPx | MPEG-Layer x |
| MRC | Monthly Recurring Charge |
| MRS | Menu Routing System |
| MRSP | Mobile Radio Service Provider |
| ms | millisecond |
|
MSA |
Metropolitan
Statistical Area |
|
MSC |
Mobile
Switching Center |
|
MSC |
Main
Service Channel |
| MSF | Multiservice Switch Forum |
| MSIN | Mobile Station Identification Number |
| MSNAP | Multiple Services Network Access Point |
| MSO | Multiple-System Operator |
| MSP | Management Service Provider |
|
MSPS |
Million
Samples Per Second |
|
MSS |
Mobile
Satellite Service |
| MSS | Multiple-Services Switching System |
| MSSP | Mobile Satellite Service Provider |
|
MTA |
Major
Trading Area |
| MTBF | Mean Time between Failures |
| MTP-[x] | Message Transfer Part-[x] |
|
MTSO |
Mobile
Telephone Switching Office |
| MTTF | Mean Time to Failure |
| MTTR | Mean Time To Repair |
|
MTTS |
Microwave
Telephony Telegraphy and Satellite |
| MTU | Multiple-Tenant Unite |
| MUSO | Mobile User Objective System |
|
MUX |
MultiPlex
Communications Transmissions |
|
MUX/DEMUX |
Multiplexer/Demultiplexer |
| MVL | Multiple Virtual Line |
| MWIF | Mobile Wireless Internet Forum |
| MZI | Mach-Zender Interferometer |
|
N-AMPS |
Narrowband
Advanced Mobile Phone Service |
|
NAM |
Number
Assignment Module |
|
NAMPS |
Narrowband
Advanced Mobile Phone System |
| NAN | NOT AND |
| Nanp | North American Numbering Plan |
| NAP | Network Access Point |
|
NANC |
North
American Numbering Council |
| NARUC | National Association of Regulatory Utility Commissioners |
| NAS | Network Access Server |
| NASA | National Aeronautics and Space Administration |
| NAT | Network Address Translation |
| NATA | North American Telecommunications Association |
| NBN | Node-Based Network |
|
NCC |
Network
Control Center |
| NCF | National Communications Forum |
|
NCO |
Numeric
Controlled Oscillator |
| NCP | Network Control Protocol |
| NCS | National Communications System OR Network Connected Server |
| NDA | National Directory Assistance |
| NDM-U | Network Data Management-Usage |
| NDSF | Non-Dispersion-Shifted Fiber |
| NE | Network Element |
| NEBS | Network-Equipment Building Standards |
| NEL | Network-Element Layer |
|
NEMI |
National
Electronic Manufacturing Initiative |
|
NENA |
National
Emergency Numbering Association |
| NEXT | Near-End Crosstalk |
| NF | Noise Figure |
| NF-min | Minimum Noise Figure |
| NFS | Network File System |
| NG | Next Generation |
| NGCN | Next-Generation Converged Network |
| NGDLC | Next-Generation Digital Loop Carrier |
| NGF | Next-Generation Fiber |
| NGN | Next-Generation Network |
| NGOSS | Next-Generation Operations Systems and Software OR Next Generation OSS |
| NHRP | Next-hop Resolution Protocol |
| NI | Network Interface |
| NIC | Network Interface Card |
| NID | Network Interface Device |
| NIDS | Network Intrusion Detection System |
| NIIF | Network Interconnection Interoperability Forum |
| NIS | Network Information Service |
| NIU | Network Interface Unit |
| NLOS | Non-Line Sight |
| nm | nanometer |
| NML | Network-Management Layer |
| NMS | Network-Management System |
| NND | Name and Number Delivery |
| NNI | Network-To-Network Interface |
| NOC | Network Operations Center |
|
NOI |
Notice
of Inquiry |
| NOMAD | National Ownership, Mobile Access, and Disaster Communications |
| Nor | NOT OR |
| NP | Number Portability |
| NPA | Numbering Plan Area |
| NPAC | Number Portability Administration Center |
| N-PADS | Non-Program Associate Data |
|
NPN |
New Public Network |
| NP-REQ | Number-Portable Request Query |
| NPV | Net Present Value |
| NRC | Network Reliability Council OR Nonrecurring Charge |
| NRIC | Network Reliability and Interoperability Council |
| NRRI | National Regulatory Research Institute [The Ohio State University] |
| NRSC | Network Reliability Steering Committee |
|
NRZ |
Non-Return
to Zero |
| NS/EP | National Security and Emergency Preparedness |
| NSAP | Network Service Access Point |
| NSAPI | Netscape Server Application Programming Interface |
| NSCC | Network Surveillance and Control Center |
| NSDB | Network and Services Database |
|
NSGO |
Non
Geostationary Orbit (Also Geosynchronous) |
| NSP | Network Service Provider OR Network and Service Performance |
| NSTAC | National Security Telecommunications Advisory Committee |
| NT | Network Termination OR New Technology |
|
N-TACS |
Narrow
Band Total Access Communications System |
|
NTC |
Negative
Temperature Coefficient |
|
NTIA |
National
Telecommunications and Information Administration |
| NTN | Network Terminal Number |
| NTSC | National Television Standards Committee |
| NVP | Network Voice Protocol |
| NWML |
National Weights & Measures Labortory
|
| NZ-DSF | Nonzero Dispersion-Shifted Fiber |
| O&M | Operations and Maintenance |
| OADM | Optical Add/Drop Multiplexer |
| OA&M | Operations, Administration, and Maintenance |
| OMA&P | Operations, Administration, Maintenance and Provisioning |
| OBF | Ordering and Billing Forum |
| OBLSR | Optical Bidirectional Lines-Switched Ring |
| OBSAI | Open Basestation Architecture Initiative |
|
OC-192 |
Optical
Channel |
| OC-[x] | Optical Carrier-[level x] |
| OCBT | Ordered Core-Based Protocol |
| OCD | Optical Concentration Device |
| OCH | Optical Channel |
| OCR | Optical Character Recognition |
| OCU | Office Channel Unit |
| OCX | Open Compact Exchange |
| OD | Origin-Destination |
| ODBC | Open Database Connectivity |
|
ODM |
Original
Design Manufacturers |
| ODSI | Optical Domain Services Interface |
|
ODU |
Outdoor
Unit |
| O-E | Optical-To-Electrical |
| O-EC | Optical-Electrical Converter |
| OECD | Organization for Economic Cooperation and Development |
|
OEM |
Original
Equipment Manufacturer |
| O-E-O | Optical-To-Electrical-To-Optical |
| OEXC | Opto-Electrical Cross-Connect |
| OFC | Optical Fiber Conference |
|
OFDM |
Orthogonal
Frequency Division Multiplexing |
| OFDMA | Orthogonal Frequency Division Multiple Access |
| OIF | Optical Internetworking Forum |
| OLA | Optical Line Amplifier |
| OLAP | On-Line Analytical Processing |
| OLI | Optical Link Interface |
| OLT | Optical Line Termination OR Optical Line Terminal |
| OLTP | On-Line Transaction Processing |
|
OMC |
Operations
Management Center |
| OMG | Object Management Group |
| OMS SW | Optical Multiplex Section Switch |
| OMS | Optical Multiplex Section |
| OMSSPRING | Optical Multiplex Section Shared Protection Ring |
| ONA | Open Network Architecture |
| ONE | Optical Network Element |
| ONMS | Optical Network-Management System |
| ONI | Optical Network Interface |
| ONT | Optical Network Termination |
| ONTAS | Optical Network Test Access System |
| ONU | Optical Network Unit |
|
OOK |
On/Off
Keying |
| OP | Optical Path |
|
OpEx |
Operational
Expenditure |
| OpEx | Operating Expenses |
| OPS | Operator Provisioning Station |
|
OPSK |
Quadrature
Phase Shift Keying |
| OPTIS | Overlapped PAM Transmission with Interlocking Spectra |
| OPXC | Optical Path Cross-Connect |
| ORB | Object Request Broker |
| ORT | Operational Readiness Test |
| OS | Operating System |
| OSA | Open Service Architecture |
| OSC | Optical Supervisory Panel |
| OSD | On-Screen Display |
| OSGI | Open Services Gateway Initiative |
| OSI | Open Systems Interconnection |
| OSMINE | Operations Systems Modification of Intelligent Network Elements |
| OSN | Optical-Service Network |
| OSNR | Optical Signal-To-Noise Ratio |
| OSP | Outside Plant |
| OSPF | Open Shortest Path First |
| OSS | Operations Support System |
| OSS/J | OSS through Java |
| OSU | Optical Subscriber Unit |
| OTM | Optical Terminal Multiplexer |
| OTN | Optical Transport Network |
| OUI | Optical User Interface |
| O-UNI | Optical User-to-Network Interface |
| OUSP | Optical Utility Services Platform |
| OVPN | Optical Virtual Petabits Network OR Optical Virtual Private Network |
| OWSR | Optical Wavelength Switching Router |
|
OXC |
Optical
Cross-Connect |
| P1dB | 1dB Compression Point, A figure-of-merit for output power |
|
PA |
Power
Amplifier |
| PABX | Private Automatic Branch Exchange |
| PACA | Priority Access Channel Assignment |
| PACS | Picture Archiving Communications System |
|
PAD |
Program
Associated Data |
| PAE | Power Added Efficiency |
| PAL | Phase Alternate Line |
| PAM | Presence and Availability Management [Forum} OR Pulse Amplitude Modulation |
| PAMS | Perceptual Analysis Measurement System |
|
PAN |
Personal
Area Network |
| PANS | Pretty Amazing New Services |
| P&L | Profit and Loss |
|
PAR |
Peak-to-Average
Ratio |
| PAR | Peak-to-Average Power Ratio |
| PBN | Point-To-Point-Based Network OR Policy-Based Networking |
| PBX | Private Branch Exchange |
| PC | Personal Computer |
|
PCB |
Printed
Circuit Board |
| PCDE | Peak Code Domain Error |
| PCF | Physical Control Field |
| PCI | Peripheral Component Interconnect |
|
PCM |
Pulse
Code Modulation |
|
PCM |
Phase
Change Materials |
|
PCMCIA |
Personal
Computer Memory Card Interface Association – now referred to as PC card |
|
PCN |
Personal
Communications Network |
|
PCR |
Program
Clock Reference OR Peak Cell Rate |
|
PCS |
Personal
Communications Systems |
|
PDA |
Personal
Digital Assistant |
|
PDC |
Personal
Digital Cellular |
| PDD | Post-Dial Delay |
| PDE | Position Determination Equipment |
| PDH | Plesiochronous Digital Hierarchy |
|
PDL |
Polarization
Dependent Loss |
| PDN | Public Data Network |
| PDP | Policy Decision Point |
| PDSN | Packet Data Serving Node |
| PDU | Protocol Data Unit |
| PE | Provider Edge |
|
PECL |
Positive
Emitter-Coupled Logic |
| PERL | Practical Extraction and Report Language |
| PESQ | Perceptual Evolution of Speech Quality |
| PFD | Phase-Frequency Detector |
|
PGA |
Pin
Grid Array |
| PHB | Per-Hop Behavior |
|
PHEMT |
Pseudomorphic
High-Electronmobility Transistor |
| PHP | Personal Home Page |
|
PHS |
Personal
Handyphone System |
| PHY | Physical Layer |
| PIC | Point-In-Call OR Predesignated Interexchange Carrier Or Primary Interexchange Carrier |
| PICS | Plug-In Inventory Control Systems |
|
PIM |
Personal
Information Management OR Protocol-Independent Multicast |
|
PIN |
Personal
Identification Number |
| PINT | PSTN and Internet Networking [IETF working group] |
| PINTG | PINT Gateway |
| PKI | Public Key Infrastructure |
| PLA | Performance-Level Agreement |
| PLC | Planar Lightwave Circuit OR Product Life Cycle |
| PLCP | Physical Layer Convergence Protocol |
| PLD | Programmable logic device |
|
PLL |
Phase-Locked
Loop |
| PLMN | Public Land Mobile Network |
| PLOA | Protocol Layers Over ATM |
|
PLT |
Power
Line Telecommunication |
| PM | Performance Monitoring |
| PMD | Physical-Medium Dependent OR Polarization Mode Dispersion |
| PMDC | Polarization Mode Dispersion Compensator |
| PMO | Present Method of Operation |
| PMP | Point-To-Multipoint |
|
PMR |
Professional
Mobile Radio |
| PN | Personal Number |
| PNNI | Private Network-To-Network Interface |
| PnP | Plug and Play |
| PO | Purchase Order |
| PODP | Public Office Dialing Plan |
| POET | Partially Overlapped Echo-Cancelled Transmission |
| POF | Plastic Optic Fiber |
| POH | Path Overhead |
| POIS | Packet Optical Interworking System |
| PON | Passive Optical Network |
|
POP |
Short
for Population |
|
POP |
Point
of Presence |
| POP3 | Post Office Protocol 3 |
|
POPS |
Persons
of Population |
| POS | Packet Over SONET OR Point Of Service |
| PosReQ | Position Request |
| POT | Point Of Termination |
|
POTS |
Plain
Old Telephone Service |
| PP | Point-to-Point |
| PPD | Partial Packet Discard |
|
PPM |
Parts
per Million |
| PPP | Point-to-Point Protocol |
| PPPoA | Point-to-Point Protocol over ATM |
| PPPoE | Point-to-Point Protocol over Ethernet |
| PPTP | Point-to-Point Tunneling Protocol |
| PP-WDM | Point-to-Point-Wavelength Division Multiplexing |
| PQ | Priority Queuing |
| PQFN | Power Quad Flat No Lead |
| PRI | Primary Rate Interface |
| PS | Picosecond |
|
PSAP |
Public-Safety
Answering Point |
| PSC | Public Service Commission |
| PSD | Power Spectral Density |
| PSDN | Public Switched Data Network |
| PSID | Private System Identifier |
|
PSK |
Phase
Shift Keying |
| PSN | Public Switched Network |
| PSPDN | Packet-Switched Public Data Network |
| PSQM | Perceived-Speech Quality Measurement |
| PSRAM | Pseudo-Static Random Access Memory |
|
PSTN |
Public
Switched Telephone Network |
| PTE | Path Terminating Equipment |
|
PTFE |
PolyTetraFluoroEthylene |
| PTN | Personal Telecommunications Number Service |
| PTP | Point-To-Point |
| PTT | Post Telephone and Telegraph Administration |
|
PUC |
Public
Utility Commission |
| PVC | Permanent Virtual Circuit |
| PVM | Parallel Virtual Machine |
| PVN | Private Virtual Network |
|
PWB |
Printed
Wiring Board |
| PWS | Planning Workstation |
| PXC | Photonic Cross-Connect |
|
Q
Factor |
For
a capacitor, inductor or tuned circuit, the Q factor, or Q, is a figure of
merit. The higher the Q, the lower
the loss and the more efficient the component |
|
QAM |
Quadrature
Amplitude Modulation |
|
QFP |
Quad
Flat Pack |
| QOE | Quality Of Experience |
|
QoS |
Quality
of Service |
|
QPSK |
Quadrature
Phase Shift Keying |
| QSDG | QoS Development Group |
| Radius | Remote Authentication Dial-in User Service |
| RADSL | Rate-Adaptive DSL |
|
RAM |
Random
Access Memory OR Remote Access Multiplexer |
| RAMS | Reliable, Available, Maintainable and Safe |
|
RAN |
Radio
Access Network OR Regional-Area Network |
| RAP | Resource Allocation Protocol |
| RAS | Remote Access Server |
|
RBOC |
Regional
Bell Operating Company |
| RCE | Relative Constellation Error |
| RCP | Remote Call Procedure |
| RCU | Remote Control Unit |
| RDBMS | Relational Database Management System |
| RDC | Regional Distribution Center |
| RDSLAM | Remote DSLAM |
|
RDSTMC |
Radio
Data System Traffic Message Channel |
| REL | Release |
|
RF |
Radio
Frequency |
| RFC | Request For Comment |
|
RFI |
Radio
Frequency Interference OR Request For Information |
|
RFIC |
Radio
Frequency Integrated Circuit |
|
RFID |
Radio
Frequency Identification |
| RFP | Request For Proposal |
| RFPON | Radio Frequency Optical Network |
| RFQ | Request For Quotation |
| RGU | Revenue-Generating Unit |
| RGW | Residential Gateway |
| RHC | Regional Holding Company |
| RIAC | Remote Instrumentation and Control |
| RIM | Research In Motion |
| RIP | Routing Information Protocol |
| RISC | Reduced Instruction Set Computing |
| RJ | Registered Jack |
|
RLAN |
Radio
LAN |
| RLL | Radio In The Loop |
| RM | Resource Management |
| RMA | Request For Manual Assistance |
| RMI | Remote Method Invocation |
| RMON | Remote Monitoring |
|
RMS |
Root-mean-Square |
|
ROADM |
Reconfigurable
Optical Add Drop Multiplexer |
| ROBO | Remote Office/Branch Office |
| ROI | Return On Investment |
|
ROM |
Read-Only
Memory |
| ROW | Right Of Way |
| RPC | Remote Procedure Call |
| RPF | Reverse Path Forwarding |
| RPR | Resilient Packet Ring |
| RPRA | Resilient Packet Ring Alliance |
| RPT | Resilient Packet Transport |
| RQMS | Requirements and Quality Measurement System |
| RRH | Remote Radio Head |
| RRQ | Round-Robin Queuing OR Registration Request |
|
RSA |
Rural
Service Area |
| RSU | Remote Service Unit |
| RSVP | Resource Reservation Protocol |
| RSVP-TE | Resource Reservation Protocol-Traffic Engineering |
| RT | Remote Terminal |
| RTCP | Real-Time Conferencing Protocol |
| RTG | Receive, Transmit Transaction Gap |
| RTP | Real-Time Transport Protocol |
| RTSJ | The Real Time Specification for Java |
| RTSP | Real-Time Streaming Protocol |
|
R&TTE |
Radio
and Telecommunications Terminal Equipment (Directive) |
|
RTTT |
Road
Transport & Traffic Telematics |
| RTU | Remote Test Unit |
|
RTV |
Room
Temperature Vulcanizing |
| RWW | Read-While-Write |
| Rx | Receive |
|
RX |
Receive
or Receiver |
| RxTx | Receiver/Transmitter |
| RZ | Return to Zero |
| SAM | Service Access Multiplexer |
| SAN | Storage-Area Network |
| SAP | Service Access Point |
| SAR | Segmentation and Reassembly |
|
SAR |
Successive
Approximation Register |
|
SAR |
Synthetic
Aperture Radar |
|
SAR |
Specific
Absorption Rate |
|
SAW |
Surface
Acoustic Wave |
| S-Band | Short Band |
| SBS | Stimulated Brillouin Scattering |
|
SCADA |
Supervisory
Control and Data Acquisition |
| Scan | Switched-Circuit Automatic Network |
| SCCP | Signaling Connection Control Part |
| SCCS | Switching Control Center System |
| SCE | Service-Creation Environment |
| SCF | Service Control Function |
| SCL | Service Control Language |
| SCM | Service Combination Manager OR Station Class Mark OR Subscriber Carrier Mark |
| SCN | Service Circuit Node OR Switched-Circuit Network |
| SCP | Service Control Point |
| SCR | Sustainable Cell Rate |
| SCRAM | Static Radom Access Memory |
| SCSP | Server Cache Synchronization Protocol |
| SCTP | Simple Computer Telephony Protocol OR Simple Control Transport Protocol OR Stream control Transmission Protocol |
| SD | Selective Discard |
| SDA | Separate Data Affiliate |
| SD&O | Service Development and Operations |
| SDB | Service Design Bureau |
| SDC | Service Design Center |
| SDF | Service Data Function |
|
SDH |
Synchronous
Digital Hierarchy |
|
SDL |
System
Definition Language |
|
SDO |
Standards
Developing Organization |
| SDM | Service-Delivery Management OR Shared Data Model |
| SDN | Software-Defined Network |
| SDP | Session Description Protocol |
|
SDR |
Software
Defined Radio |
|
SDRAM/SORAM |
Synchronous
Dynamic Random Access Memory |
| SDRP | Source Demand Routing Protocol |
| SDSL | Symmetric DSL |
| SDTV | Synchronous Digital Hierarchy |
| SDV | Switched Digital Video |
| SE | Service Element |
|
SEAMCAT |
Spectrum
Engineering Advanced Monte Carlo (computer) Analysis Tool (software
implementation of a Monte Carlo simulation method which permits statistical
modeling of different radio interference situations) |
| SEC | Securities and Exchange Commission |
| SEE | Service-Execution Environment |
| SEM | Spectral Emission Mask |
| SEP | Signaling Endpoint |
| ServReq | Service Request |
| SET | Secure Electronic Transaction |
|
SEU |
Single-Event
Upset |
| SFA | Sales Force Automation |
| SFD | Start Frame Delimiter |
| SFF | Small Form-Factor |
| SFGF | Supplier-Funded Generic Element |
|
SFM |
Single
Frequency Network |
| SFQ | Single Flux Quantum |
| SG | Signaling Gateway |
| SG&A | Selling, Goods, and Administration OR Sales, Goods, and Administration |
| SGCP | Simple Gateway Control Protocol |
| SGSN | Service GPRS Support Node |
| SHLR | Standalone Home Location Register |
| SHV | Shareholder Value |
|
SI |
Service
Information OR Systems Integrator |
| SIBB | Service-Independent Building Block |
|
SiC |
Silicon-Carbide |
| SIC | Service Initiation Charge |
| SICL | Standard Interface Control Library |
| SID | Silence Indicator Description |
| SIF | SONET Interoperability Forum |
|
SIG |
Specification
Implementation Group |
| sigtran | Signaling Transport [working group] |
| SIM | Subscriber Identity Module OR Service Interaction Manager |
| SINAD | Signal to toal noise and Interference ratio |
|
SiP |
System-in-a-Package |
| SIP CPL | SIP Call Processing Language |
| SIP | Session Initiation Protocol |
| SIP-T | Session Initiation Protocol for Telephony |
|
SIR |
Serial
Infrared |
| SITA | Societe Internationale de Telecommunications Aeronautiques |
| SIU | Service Interface Unit |
| SIVR | Speaker-Independent Voice Recognition |
| SKU | Stock-Keeping Unit |
| SL | Service Logic |
| SLA | Service-Level Agreement |
| SLC | Subscriber Line Carrier |
|
SLC |
Single
Layer Capacitors |
| SLEE | Service Logic Execution Environment |
| SLIC | Subscriber Line Interface Circuit |
| SLO | Service-Level Objective |
|
SM |
Sparse Mode |
| SMC | Service Management Center |
|
SMD |
Short
Message Delivery |
| SMDI | Simplified Message Desk Interface |
| SMDS | Switched Multimegabit Data Service |
| SME | Small-Top-Medium Enterprise |
| SME | Superconducting Microelectronics |
| SMF | Single-Mode Fiber |
| SML | Service Management Layer |
| SMP | Service Management Point |
| SMPP | Short Message Peer-To-Peer Protocol |
|
SMR |
Specialized
Mobile Radio |
|
SMS |
Short
Messaging Service OR Service-Management System |
| SMSC | Short Messaging Service Center |
|
SMT |
Surface-Mount
Technology or Surface-Mount Toroidal |
| SMTP | Simple Mail Transfer Protocol |
| SN | Service Node |
| SNA | Service Node Architecture |
| SNA | Service Network Architecture |
| SNAP | Subnetwork Access Protocol |
|
SNMP |
Simple
Network Management Protocol |
| SNPP | Simple Network Paging Protocol |
|
SNR |
Signal-to-Noise
Ratio |
| SO | Service Objective |
|
SOA |
Semiconductor
Optical Amplifier OR Service Order Activation |
| SOAC | Service Order Analysis and Control |
| SOAP | Simple Object Access Protocol |
|
SOCC |
Satellite Operations Control Center |
| SOE | Standard Operating Environment |
|
SOHO |
Small
Office, Home Office |
|
SOIC |
Small-Outline
Integrated Circuit |
| SON | Service Order Number |
|
SONET |
Synchronous
Optical Network |
| SOP | Service Order Processor |
|
SOT |
Standard
Outline Transistor package |
| SP | Service Provider OR Signaling Point |
| SPC | Stored Program Control |
| SPE | Synchronous Payload Envelope |
|
SPDT |
Single-Pole
Double-Throw |
| SPF | Shortest Path First |
| Spirits | Service In The PSTN/IN Requesting Internet Service [working group] |
| SpiritsG | SPIRITS Gateway |
| SPM | Self-Phase Modulation OR Subscriber Private Meter |
| SPOP | Service Point of Presence |
| SPR | Sector Power Ratio |
| SPX | Sequence Packet Exchange |
| SQL | Structured Query Language |
|
SRAM |
Static
Random Access Memory |
|
SRD |
Short
Range Device |
| SRF | Special Resource Function |
| SRP | Source Routing Protocol |
| SRS | Stimulated Raman Scattering |
| srTCM | Single-Rate Tri-Color Marker |
| SS | Softswitch |
| SS7 | Signaling System 7 |
| SSE | Service Subscriber Element |
| SSF | Service Switching Function |
| SSG | Service Selection Gateway |
| SSL | Secure Sockets Layer |
| SSM | Service and Sales Management |
| SSMF | Standard Single-Mode Fiber |
| SSP | Service Switching Point |
|
SSOP |
Plastic
Shrink Small Outline Package |
|
SSPA |
Solid
State Power Amplifiers |
| STE | Section Terminating Equipment |
|
STI |
Service
Transport Interface |
| STM | Synchronous Transfer Mode |
|
STN |
Service
Transport Network Or Service Transport Node |
| STP | Shielded Twisted Pair OR Signal Transfer Point OR Spanning Treee Protocol |
| STR | Signal-To-Resource |
| STS | Synchronous Transport Signal |
| SUA | SCCP User Adaptation |
| SVC | Switched Virtual Circuit |
| SW | Software |
| SWAN | Storage Wide-Area Network |
| SWAP | Shared Wireless Access Protocol |
| SWBT | Southwestern Bell Telephone |
| SWOT | Strengths, Weaknesses, Opportunities, and Threats |
| SYN | IN Synchronous Transmission |
|
T-1 |
North
American Commercial Digital Transmission Standard |
| TALI | Transport Adapter Layer Interface |
| TAPI | Telephony Application Programming Interface |
|
TAPS |
TETRA
Advanced Packet Service |
| TAT | Terminating Access Trigger |
| TAT | Termination Attempt Trigger |
| TAT | Transatlantic Telephone Cable |
| Tb | Terabit |
| TBD | To Be Determined |
| Tbps | Terabits Per Second |
| TC | Tandem Connect |
|
TC |
Technical
Committee |
|
TC |
Temperature
Coefficient |
|
TCAM |
Telecommunication
Conformity Assessment & Market Surveillance Committee |
| TCAP | Transactional Capabilities Application Part |
| TCB | Transfer Control Block |
|
TCE |
Thermal
Coefficient of Expansion |
| TCIF | Telecommunications Industry Forum |
| TCK | Test Clock |
| TCM | Time Compression Multiplexing |
| TCO | Total Cost of Ownership |
|
TCP |
Transmission
Control Protocol |
|
TCP/IP |
Transmission
Control Protocol/Internet Provider |
| TC-PAM | Trellis Coded-Pulse Amplitude Modulation |
|
TCXO |
Temperature-Controlled
Oscillator |
| Td | Decomposition Temperature |
|
TDD |
Time
Division Duplex |
|
TDM |
Time
Division Multiplex |
|
TDMA |
Time-Division
Multiple Access |
| TDMDSL | Time Division Multiples Digital Subscriber Line |
| TDOA | Time Difference Of Arrival |
| TDR | Time Domain Reflectometer |
| TDR | Transaction Detail Record |
| TD-SCDMA | Time Division Synchronous Code Division Multiple Access |
| TE | Traffic Engineering |
| TEAM | Transport Element Activation Manager |
| TED | Traffic Engineering Database |
|
TETRA |
Trans
European Trunked Radio |
| TEM | Telecommunications Equipment Manufacturer |
|
TF-A |
Task
Force A |
| TFD | Toll-Free Dialing |
| TGA | Thermo Gravimetric Analysis |
|
Third-Generation |
3G |
| THz | Terahertz |
|
TIA |
Telecommunications
Industry Association |
|
TIG |
Technical
Implementation Group |
| TIMS | Transmission Impairment Measurement Set |
| TINA | Telecommunications Information Networking Architecture |
| TINA-C | Telecommunications Information Networking Architecture Consortium |
| TIPHON | Telecommunications and Internet Protocol Harmonization Over Networks |
| TIWF | Trunk Interworking Function |
| TL1 | Transaction Language 1 |
|
TLA |
Technical
Live Advisor |
| TLDN | Temporary Local Directory Number |
| TLS | Transparent LAN Service |
| TLS | Transport-Layer Security |
| TLV | Tag Length Value |
| TM1 | WCDMA Test Signal |
| TM5 | HSDPA/WCDMA Test Signal |
|
TMA |
Tower
Mounted Amplifiers |
| TMA | Thermal Mechanical Analysis |
|
TMF |
Tower
Mounted Filters |
| TMF | TeleManagement Forum |
|
TMC |
Traffic
Message Channel |
| TMN | Telecommunications Management Network |
| TMO | Trans-Metro Optical |
| TMS | Test Mode Select |
| TN | Telephone Number |
| TNO | Telecommunications Network Operator |
| TO&E | Table of Organization and Equipment |
| TOD | Time Of Day |
| TOM | Telecom Operations Map |
| ToS | Type Of Service |
| TP | Twisted Pair |
|
TPC |
Turbo
Product Codes |
| TPM | Transaction Processing Monitor |
| TPS-TC | Transmission Control Specific-Transmission Convergence |
|
TQFP |
Thin
Quad Flat Pack semiconductor package |
| TR | Tip and Ring |
|
TR |
Technical
Recommendation |
|
TR-45 |
TIA
Committee-Oversees the standard making process for wireless
telecommunications |
|
TRA |
Technology Readiness Assessment |
|
TRIP |
Telephony Routing Over Internet Protocol |
|
trTCM |
Two-Rate Tri-Color Marker |
| TRx | Transceiver |
|
TSB |
Telecommunication System Bulletin |
|
TSI |
Time Slot Interchange |
|
TSP |
Telecommunications Service Provider |
|
TSS |
Telecommunications Standardization Section |
|
TSOP |
Thin
Small Outline Package |
|
TSSOP |
Plastic
Thin Shrink Small Outline Package |
|
TTA |
Table-Top
Antenna |
| TTC | Telecommunications Technology Committee |
| TTG | Transmit Receive Transition Gap |
| TTCP | Test TCP |
|
TTL |
Transistor-Transistor
Logic |
| TTS | Text-to-speech or TIRKS table system |
| TUI | Telephone user interface |
| TUP | Telephone User Part |
| TV | Television |
|
TWG |
Technical
Working Group |
|
TX |
Transmitter |
| UA | User agent |
| UADSL | Universal ADSL |
| UAK | User-authentication key |
| UAWG | Universal ADSL Working Group |
| UBR | Unspecified bit rate |
| UBT | Ubiquitous bus technology |
|
UART |
Universal
Asynchronous Receiver Transmitter |
|
UCC |
Uniform
Code Council |
| UCP | Universal computer protocol |
| UCS | Uniform communication standard |
|
UDP |
User
Datagram Protocol |
| UHF | Ultra High Frequency |
| UI | User interface |
|
UIM |
User
Identity Module |
| ULH | Ultra-long-haul |
|
ULP |
Ultra
Low Power |
|
ULS |
Universal
Licensing System |
|
UMTS |
Universal
Mobile Telecommunications Service |
| UMTS | Universal Mobile Telecommunications System |
| IM | Unified messaging |
| UML | Unified modeling language |
| UMTS | Universal Mobile Telecommunications System |
| UN | United Nations |
| UNE | Unbundled network element |
| UNH-IOL | University of New Hampshire-Interoperability Laboratory |
| UNI | User network interface |
|
UNII |
Unlicensed
National Information Infrastructure |
| UOL | Unbundled optical loop |
|
UPC |
Uplink Power Control /Usage parameter control |
| UPI | User personal identification |
|
UTRA |
UMTS
Terrestrial Radio Access |
|
UWB |
Ultra-Wideband |
|
VCO |
Voltage-Controlled
Oscillator |
|
VCSEL |
Vertical
Cavity Surface-Emitting Laser |
| VCTCXO | Voltage Controlled Temperature Compensated Crystal Oscillator |
|
VCXO |
Voltage-Controlled
Crystal Oscillator |
| VLSI | Very Large Scale Integration |
|
VOFDM |
Vector
Prthogonal Frequency Division Multiplexing |
|
VSAT |
Very
Small Aperture Terminal (satellite service) |
|
VSWR |
Voltage
Standing Wave Ratio |
|
WAN |
Wide
Area Network |
|
WAP |
Wireless
Application Protocol |
| WBG | Wide Bandgap |
|
WCA |
Wireless
Cable Association Int’l |
|
WCDMA |
Wideband
Code-Division Multiple Access |
|
WCS |
Wireless
Communications Services |
|
WDM |
Wave
Division Multiplexer |
|
WECA |
Wireless
Ethernet Compatibility Alliance |
|
WGD |
Working
Group D (D for Data Features) |
|
WGFM |
Working
Group Frequency Management (of CEPT) |
|
WGRR |
Working
Group Radio Regulatory (of CEPT) |
|
WGSE |
Working
Group Spectrum Engineering (of CEPT) |
| WiMAX | Worldwide Interoperability for Microwave Access |
| WiMAX | Worldwide Interoperability for Microwave Access Technology |
|
WIN |
Wireless
Intelligent Network |
|
Wireless
IT |
Wireless
Information Technology |
|
Wireless
LAN |
Local
Area Network |
|
WLAN |
Wireless
Local Area Network |
|
WLL |
Wireless
Local Loop |
|
X-PAD |
Extended
Program Associated Data |
|
XDSL |
Another
name for an ISDN BRI channel |
| XIP | Execute In Place |
|
10Base-T |
One
of several adaptations of the Ethernet (IEEE 802.3) standard for Local Area
Networks (LANS). The 10Base-T standard (also called Twisted Pair Ethernet)
uses a twisted-pair cable with maximum lengths of 100 meters. |
|
100Base-T |
A
networking standard that supports data transfer rates up to 100 Mbps (100
megabits per second). |
|
802.3 |
An
IEEE standard that defines the MAC layer for bus networks that use
CSMA/CD. This is the basis for the
Ethernet standard. |
|
802.11 |
A
wireless LAN standard from IEEE that defines physical (PHY) and medium access
control (MAC) layer protocols. IEEE
802.11, operating at 2.4 GHz offers speeds of 2 Mbps using frequency-hopping
spread spectrum, direct-sequence spread spectrum and infrared (IR)
transmission technologies |
|
802.15 |
A
personal area network (PAN) standard for short distance wireless networks
also known as WPANs. TG1 is
WPAN/Bluetooth, TG2 is coexistence, TG3 is WPAN high rate. |
|
802.16 |
An
IEEE working group on Broadband Wireless Access Standards creating the family
of standards for wireless metropolitan area networks. |