Numerics |
|
2F |
Two-Fiber |
3G |
3rd Generation |
4C |
Consortium of Intel, IBM, Matsushita, and Toshiba |
4F |
Four-Fiber |
5C |
Consortium of Intel, Sony, Matsushita, Toshiba, and Hitachi |
10 GbE |
10 Gigabit Ethernet |
10 GFC |
10 Gigabit Fibre Channel (Same as FC1200) |
A |
|
A-TDMA |
Advanced Time Division Multiple Access |
A/D |
Analog-to-Digital |
AAL |
ATM Adaptation Layer |
AAL0 |
ATM Adaptation Layer Type 0 |
AAL1 |
ATM Adaptation Layer Type 1 |
AAL2 |
ATM Adaptation Layer 2 Transport |
AAL3/4 |
ATM Adaptation Layer Type 3 and 4 |
AAL5 |
ATM Adaptation Layer 5 |
ABR |
Available Bit Rate |
ABT |
Advanced BiCMOS Technology |
AC |
Alternating Current; Administrative Complex; Atomic Clock |
AC-3 |
Audio Coding Revision 3 |
ACAC |
Actual Call Admission Control |
ACEG |
Alternating Current Equipment Ground |
ACK |
Acknowledge |
ACL |
Active Control List; Access Control List |
ACO |
Alarm Cutoff |
ACQ |
Acquire |
ACR |
Allowed Cell Rate |
ACS |
Automatic Channel Shutdown; Alarm Correlation and Suppression |
ACSE |
Association Control Service Element |
ACSS |
Automatic Channel Shutdown Suppression; Automatic Channel Shutdown State |
ACT |
Active |
ADC |
Analog-to-Digital Converter; Add/Drop Coupler |
ADI |
Asset Distribution Interface |
ADM |
Add/Drop Multiplexer |
ADP |
Actual Departure Potential |
ADSL |
Asymmetric Digital Subscriber Line |
ADT |
Actual Departure Time |
AE |
Automation Engine |
AES |
Advanced Encryption Standard |
AESA |
ATM End System Address |
AFI |
Authority and Format Identifier |
AFM |
APS Mode Mismatch Failure |
AGC |
Automatic Gain Control |
AGGR |
Aggregate |
AID |
Access Identifier |
AIM |
Auto Image Management; Active Inventory Map |
AINI |
ATM Inter-Network Interface |
AINS |
Automatic in Service State |
AIR |
Additive Increase Rate |
AIS |
Alarm Indication Signal |
AIS-L |
Alarm Indication Signal - Line |
AIS-P |
Alarm Indication Signal - Path |
AIS-S |
Alarm Indication Signal - Section |
AIS-V |
VT Alarm Indication Signal |
AISDP |
Alarm Indication Signal Decay Period |
AISIP |
Alarm Indication Signal Integration Period |
ALMLED2U |
Alarm LED 2 RU (Online Edge Platform) |
ALS |
Automatic Laser Shutdown |
AM |
Amplitude Modulation; Application Manager |
AMF |
APS Mode Mismatch Failure |
AMI |
Access Method Interface; Alternate Mark Inversion |
AMM |
Alarm Management Module; Auxiliary Management Module |
AMP |
Amplifier |
AMS |
Asset Management System |
ANSI |
American National Standards Institute |
AO |
Autonomous Output |
AOD |
Advertising on Demand |
APC |
Angled Physical Contact |
APD |
Avalanche PhotoDiode |
API |
Application Program Interface |
APS |
Automatic Protection Switching |
APSBF |
Automatic Protection Switching Byte Failure |
APSCM |
Automatic Protection Switching Channel Mismatch |
APSMM |
Automatic Protection Switching Mode Mismatch |
ARC |
Alarm Reporting Control |
ARP |
Address Resolution Protocol |
ARPU |
Average Revenue per Unit (or User) |
AS |
Autonomous System |
ASAP |
Alarm Severity Assignment Profile |
ASCII |
American Standard Code for Information Interchange |
ASD |
Access Security Device |
ASE |
Amplified Spontaneous Emission |
ASI |
Asynchronous Serial Interface |
AsiaPac |
Asia Pacific |
ASIC |
Application-Specific Integrated Circuit |
ASN.1 |
Abstract Syntax Notation One |
ASP |
Applications Service Provider; Average Selling Price |
ASYNC |
Asynchronous |
AT |
Advanced Technology |
AT&T |
American Telephone and Telegraph Company |
ATA |
Advanced Technology Attachment |
ATAF |
ATM Test Access Function |
ATAG |
Autonomous Tag |
ATAGSEQ |
Autonomous Tag Sequence |
ATDMA |
Asynchronous Time Division Multiple Access |
ATM |
Asynchronous Transfer Mode |
ATM SAM |
ATM Service Access Multiplexer |
ATMVCL |
ATM Virtual Channel Link |
ATMVPL |
ATM Virtual Path Link |
ATTN |
Attenuator |
AU/AU-x |
Administrative Unit |
AU-n |
Administrative Unit "n" |
AUG |
Administrative Unit Group |
AUX |
Auxiliary |
AVC |
Attribute Value Change |
AWG |
American Wire Gauge |
AWGN |
Additive White Gaussian Noise |
B |
|
B-DCS |
Broadband Digital Cross-connect System |
B-PON |
Broadband Passive Optical Network |
B-RAS |
Broadband Remote Access Server |
B/P |
Backplane |
B3ZS |
Bipolar With 3-Zero Substitution |
B6ZS |
Bipolar With 6-Zero Substitution |
B8ZS |
Bipolar With 8-Zero Substitution |
BA |
Booster Amplifier |
BB |
Broadband |
BBE |
Background Block Error |
BBE-RS |
Background Block Error Regenerator Section (an SDH regenerator section error) |
BBER |
Background Block Error Ratio |
BC |
Business Continuity |
BCD |
Binary-Coded Decimal |
BCST |
Broadcast |
BDFB |
Battery Distribution Fuse Bay |
BE |
Block Error; Best Effort |
BE-RS |
Block Errors-Regenerative Section |
BECN |
Backward Explicit Congestion Notification |
BELLCORE |
BELL Communications Research, Inc. |
BER |
Bit Error Rate |
BER-SD-P |
Path Signal Degrade BER |
BER-SF-P |
Path Signal Failure BER |
BERT |
Bit Error Rate Test |
BFP |
Back Facet Power |
BGP |
Border Gateway Protocol |
BGP4 |
Border Gateway Protocol, version 4 |
BICI |
Broadband Inter-Carrier Interfaces; B-ISDN Inter-carrier Interface |
BICSI |
Building Industry Consulting Services International |
BIOS |
Basic Input/Output System |
BIP |
Bit Interleaved Parity |
BIT |
Built-In Test |
BITS |
Building Integrated Timing System |
bits/sym |
Bits per Symbol |
BLSR |
Bidirectional Line Switched Ring |
BML |
Business Management Layer |
BNC |
Bayonet Neill-Concelman |
BOC |
Bell Operating Company |
BOL |
Beginning of Life |
BOM |
Bill of Materials |
BONDING |
Bandwidth ON Demand Interoperability Group |
BOOTP |
Bootstrap Protocol |
BP |
Backplane |
BPI |
Baseline Privacy Interface |
BPI+ |
Baseline Privacy Interface Plus |
BPP |
Backplane Protocol |
bps |
bits per second |
BPSR |
Bidirectional Path Switched Ring |
BPT |
Band Pass-Through |
BPV |
BiPolar Violations |
BRI |
Basic Rate Interface |
BRM |
Backward RM |
BSC |
Board SC Connector |
BSP |
Board Support Package |
BSS |
Business Support System |
BT |
British Telecom; Burst Tolerance |
Btag |
Beginning Tag |
BTM |
Bits Termination Circuit Pack |
BTS |
Business Telecom Services |
BTU/hr |
British Thermal Unit per hour |
BW |
Bandwidth |
BWDM |
Band Wavelength Division Multiplexer |
BYT |
Total Byte Count |
C |
|
C |
Celsius; Critical |
C2O |
Cable to Optic |
CA |
Content Archived |
CAB |
Conformity Assessment Body |
CAC |
Connection Admission Control; Call Admission Control |
CAD |
Computer Aided Design |
CALA |
Central America and Latin America |
CAM |
Content Addressable Memory |
CAPEX |
Capital Expenditure |
CAS |
Channel Associated Signaling |
CATV |
Community Antenna Television; Cable Television |
CB, C/B |
Circuit Breaker |
C-BAE |
C-Band Amplifier Equalizer |
C-BAM |
C-Band Amplifier Monitor |
CBN |
Common Bonding Network |
CBR |
Constant Bit Rate |
CC |
Cross Connection; Clear Channel |
CCB |
Configuration Control Board |
CCC |
Cross Connect Controller |
CCCG |
Cross Connection and Control Group |
CCC-PC |
CCC Processor Card |
CCDF |
Complementary Cumulative Distribution Function |
CCI |
Content Control Information |
CCITT |
Consultative Committee on International Telegraphy and Telephony |
CCK |
Complimentary Code Keying |
CCW |
Counterclockwise |
CCC-XC |
CCC Cross Connect Card |
CCC768 |
Cross Connect Fabric with 768x768 STS-1 capacity |
CD |
Compact Disc; CoreDirector®; Chromatic Dispersion |
CDD |
CoreDirector® Designer Software Tool |
CDE |
Common Desktop Environment (UNIX) |
CDR |
Call Detail Recording; Clock and Data Recovery |
CD-ROM |
Compact Disc Read Only Memory |
CDE |
Common Desktop Environment |
CDMA |
Code Division Multiple Access |
CDP |
Contracted Deadline Potential |
CDT |
Connection Dropping Threshold |
CDTS |
Chromatic Dispersion Test Set |
CDV |
Cell Delay Variation |
CDVT |
Cell Delay Variation Tolerance |
CD-WO |
Compact Disc - Write One |
CE |
Consumer Electronics |
CEA |
Consumer Electronics Association |
CER |
Cell Error Ratio; Codeword Error Ration |
CES |
Circuit Emulation Service |
CEV |
Controlled Environmental Vault |
CFG |
Configuration |
CFM |
Cubic Feet per Minute |
CFU |
Cooling Fan Unit |
CH |
Channel |
CHASEH |
Environmentally Hardened Chassis |
CHASSIS-e |
Old Chassis Type |
CHASYNC |
Chassis with Sync |
C/I |
Carrier-to-Interface Ratio |
CI |
Compact Intelligence; Craft Interface; Customer Interface; Certified Integrator |
CID |
Circuit Identification; Craft Interface Device |
CIF |
Client Interface |
CIFS |
Common Internet File System |
CIM |
Client Interface Module |
CINOT |
Ciena Optical Transport System |
CIR |
Customer Information Release |
CIT |
Craft Interface Terminal; Craft Interface Tool |
CL |
Coupling Loss; Cleared |
CLEC |
Competitive Local Exchange Carrier |
CLEI |
Common Language Equipment Identifier |
CLEITM |
Common Language Equipment Identifier |
CLFI |
Common Language Facility Identifier |
CLI |
Command Line Interface |
CLIP |
Calling Line Identification Presentation |
CLIR |
Calling Line Identification Restriction |
CLLI |
Common Language Location Identifier |
CLNP |
Connectionless Network Layer Protocol |
CLNS |
Connectionless Network Service |
CLP |
Cell Loss Priority |
CLR |
Cell Loss Ratio |
CLTP |
Connectionless Transport Protocol |
cm |
centimeter |
CM |
Control Module; Cable Modem |
CM-CLI |
Control Module Command Line Interface |
CMF |
Channel Mismatch Failure; Client Management Frame |
CMIP |
Common Management Information Protocol |
CMIS |
Common Management Information Services |
CMISE |
Common Management Information Service Element |
CMO |
Ciena Management Object |
CMR |
Cell Misinsertion Rate |
CMS |
Call Management Server |
CMTS |
Cable Modem Termination System |
CMU |
Clock Multiplier Unit |
C-n |
Container C-11=1,544 Mb/s; C-12=2,048 Mb/s; C-2=6,312 Mb/s; C-3=34,368 Mb/s and 44,736 Mb/s; C-4=139,264 Mb/s |
CNIPS |
Core Network Integrated Planning System |
CNIR |
Carrier-to-Noise/Ingress Ratio |
CNMP |
Customer Network Management Portal |
CNR |
Carrier-to-Noise Ration |
CO |
Central Office |
COADM |
Configurable Optical Add/Drop Multiplexer |
COBRA |
Copper and Optical Broadband Remote Access |
CODEC |
Coder/Decoder |
COE |
Central Office Equipment |
COFA |
Change of Frame Alignment |
COM |
Ciena's inter-processor communications system |
COLD |
Central Office Layout Design |
COLL |
Collision Count |
CONDTYPE |
Condition Type |
CONS |
Connection Oriented Network Service |
COPS |
Common Open Policy Services |
CORBA |
Common Object Request Broker Architecture |
CoS Class of Service |
|
COS |
Class of Service; Common Object Services |
COT |
Central Office Terminal |
COTS |
Commercial off the Shelf |
CP |
Circuit Pack; Control Processor; Connection Provisioner; Call Processing; Customer Premise |
CPCI |
Compact Peripheral Component Interconnect |
CPD |
Common Path Distortion |
CPE |
Customer Premises Equipment; Customer Provided Equipment |
C-Plane |
Control Plane |
CPLD |
Complex Programmable Logic Device |
CPM |
Cross-Phase Modulation |
CPRM |
Content Protection for Recordable Media |
CPT |
Channel Pass-Through |
CPTTAG |
Connection Termination Point Tag |
CPU |
Central Processing Unit |
CR |
Circuit Reliability; Carriage Return; Critical Alarm |
CRC |
Cyclic Redundancy Check |
CRG |
Circuit Restoration Group |
CRIP |
CIENA Routing Information Protocol |
CR-LDP |
Constraint-based Routing Label Distribution Protocol |
CRS |
Cross Connect |
CRT |
Cathode Ray Tube |
CRx Line |
Client Receive Line |
CS |
Control Sub-span; Convergence Sublayer; CoreStream |
CSA |
Canadian Standards Association |
CSD |
Core Switching Division |
CSES |
Consecutive Severely Errored Seconds |
Csh |
C Shell |
CSH |
Common Signal Header |
CSI |
Convergence Sublayer Indicator |
CSM |
Core Switching Manager |
C-SMF |
Conventional Single Mode Fiber |
CSO |
Composite Second Order |
CSP |
Customer Service Profile |
CSR |
Customer Service Representative |
CS-RZ |
Carrier-Suppressed Return-to-Zero |
CST |
Central Standard Time |
CSU |
Channel Service Unit; Customer Service Unit |
CSV |
Comma-Separated Value |
CT |
Critical |
Ctag |
Correlation Tag |
CTAM |
Cable & Telecommunications Association for Marketing |
CTB |
Composite Triple Beat |
CTC |
Common Transmit Clock |
CTD |
Cell Transfer Delay |
CTG |
Cradle-To-Grave |
CTM |
Core Transport Manager |
CTN |
Core Transmission Network |
CTP |
Connection Termination Point |
CTS |
Clear To Send |
CTx Line |
Client Transmit Line |
CUG |
Closed User Group |
CV |
Code Violation |
CV-FE |
Code violation - Far End |
CV-L |
Code Violation - Line |
CV-P |
Code Violation - Path |
CV-PFE |
Code Violation - Path Far End |
CV-S, CVS |
Code Violation - Section; Code Violation -- Seconds |
CW |
Clockwise; Continuous Wave |
CWDM |
Coarse Wave Division Multiplexing; Coarse Wavelength Division Multiplex |
CWDM-U |
Coarse Wavelength Division Multiplexing - UPSR |
D |
|
D/A |
Digital-to-Analog |
DAC |
Digital to Analog Converter; Digital Addressable Controller |
DACS |
Digital Access and Cross-Connect System |
DAD |
Direct Access Devise |
DADM |
Data Add/Drop Multiplexer |
DAS |
Direct Attached Storage |
dB |
decibel |
DB |
Database |
DBA |
Dynamic Bandwidth Assignment |
dBc |
Decibel referenced to the carrier |
dBm |
Decibel reference in milliwatts |
DBMS |
Database Management System |
DBPSK |
Differential Binary Phase Shift Keying |
DBS |
Direct Broadcast Satellite |
DB-9 |
Data Bus 9 Pin Connector |
DC |
Direct Current; Data Connection |
D&C |
Drop and Continue |
DCC |
Data Communications Channel |
DCE |
Data Communications Equipment; Data Circuit Terminating Equipment |
DCF |
Dispersion-Compensating Fiber |
DCG |
Dispersion Compensation Grating |
DCM |
Dispersion Compensation Module |
DCN |
Data Communication Network |
DCOM |
Distributed Component Object Model |
DCP |
Digital Communications Protocol; Device Control Protocol |
DCS |
Digital Cross-connect System; Digital Connection System |
DDI |
Direct Dialing Inward |
DDS |
Digital Data Storage; Digital Data Service; Digital Data System; Digital Data Stream |
DE |
Discard Eligible |
DEC |
Digital Electrical Carrier |
DEG |
Degraded Signal |
DEMUX |
Demultiplexer |
DENI |
Digital Entertainment Networking Initiative |
DENY |
Transaction Denier |
DFB |
Distributed Feedback |
DG |
Disc Group |
DGD |
Differential Group Delay |
DHCP |
Dynamic Host Configuration Protocol |
DHWG |
Digital Home Working Group |
D/I |
Drop and Insert |
DIO |
Digital Input/Output |
DIP |
Dual In-line Package (switch) |
DIR |
Direction |
DiffServ |
Differentiated Services |
Div |
Division |
DLC |
Digital Loop Carrier |
DLCI |
Data Link Connection Identifier |
DLL |
Dynamic Link Library; Data Lind Layer (driver); Downline Load |
DLT |
Digital Linear Tape Drives |
DM |
Degraded Minute; Dispersion Mitigation |
DMA |
Direct Memory Access |
DMACS |
Distributed Monitoring and Control System |
DMB |
Digital Multipoint Bridge; Document Maintenance Bulletin |
DMC |
Dual Modem Cards |
DMH |
Degraded Modem Hours |
DMM |
Digital Multi-Meter |
DMOP |
Detailed Method of Procedure |
DMS |
Dispersion-managed Solution |
DMUX |
[Optical] Demultiplexer |
DN |
Data Node |
DNCS |
Digital Network Control System |
DNR |
Do Not Revert |
DNS |
Domain Name Server; Domain Name System |
DOCSIS |
Data-Over-Cable Service Interface Specifications |
DOS |
Disk Operating System |
DoS |
Denial of Service |
DPDT |
Double-Pole, Double-Throw |
DPFI |
Data Plane Fault Isolation |
DPI |
Digital Program Insertion |
DPR |
Dedicated Protection Ring |
DPRAM |
Dual Port Random Access Memory |
DPT |
Dynamic Packet Transport |
DQ |
Degraded Quality Level |
DQDB |
Distributed Queue Dual Bus |
DQoS |
Dynamic Quality of Service; Deploying Quality of Service |
DQPSK |
Differential Quadrature Phase Shift Keying |
DR |
Disaster Recovery |
DRAM |
Dynamic Random Access Memory |
DRM |
Digital Rights Management |
DS |
Digital Signal; Downstream |
DS0 |
Digital Signal Level 0 (64 Kb/s data/voice channel) |
DS1 |
Digital Signal Level 1 (T1 equivalent) |
DS3 |
Digital Signal Level 3 (T3 equivalent) |
DSCP |
Differentiated Service Code Point |
DSCRDS |
Discard Count |
DSF |
Dispersion Shifted Fiber |
DSL |
Digital Subscriber Line; Digital Subscriber Loop |
DSLAM |
Digital Subscriber Line Access Multiplexer |
DS-n |
Digital Signal, level n |
DSP |
Digital Signal Processor |
DSS2 |
Digital Subscriber Signaling 2 |
DSTB |
Digital Set-top Box |
DSX |
Digital Side Interface |
DSX-1 |
Digital Signal Level 1 Cross Connect |
DS-x |
Digital Signal where N denotes multiple of 51.84 Mb/s |
DSX-3 |
Digital Signal Level 3 Cross Connect |
DT |
Decision Technology; Direct Termination |
DTCP |
Digital Transmission Content Protection |
DTE |
Data Terminal Equipment |
DTL |
Designated Transit List |
DTMF |
Dual Tone Multi-Frequency |
DTS |
Dynamic Transport System |
DTV |
Digital Television |
DUART |
Dual Universal Asynchronous Receiver Transmitter |
DUP |
Data User Part |
DUS |
Don't Use Synchronization |
DV |
Digital Video |
DVB-ASI |
Digital Video Broadcast Asynchronous Serial Interface |
DVC |
Dynamic Virtual Concatenation |
DVD |
Digital Versatile Disc |
DVD+R |
Recordable Digital Versatile Disc |
DVD+RW |
Rewritable Digital Versatile Disc |
DVI |
Display Visual Interface |
DVM |
Digital Voltmeter |
DVOW |
Digital Voice Orderwire |
DVR |
Digital Video Recorder |
DW |
Datawire |
DWDM |
Dense Wavelength Division Multiplexing |
DXC |
Digital Cross-Connect |
DXI |
Data Exchange Interface |
E |
|
E1 |
European Equivalent of T1 (2.048 Mb/s signal speed) |
E2E |
End To End |
E2PROM |
Electrically Erasable Programmable Read Only Memory |
E3 |
European data signal at a rate of 34.368 Mb/s |
EAL |
Events, Alarms, and Logging |
EAI |
Enterprise Application Integration |
EAP |
Extensible Authentication Protocol |
EAS |
Emergency Alert System |
EB |
Error Block; Eastbound |
EBEM |
Enhanced Bus Extender Module |
EC-1 |
Electrical Carrier Level 1 (STS1 Equivalent) |
ECC |
Edge Card Control; Embedded Communications Channel |
ECI |
Equipment Catalog Item |
ECLR |
Egress Cell Loss Ratio |
ECn |
Electrical Carrier, level n; 0=64 kb/s, 2=6,312 Mb/s, 3=44,736 Mb/s |
ECN |
Engineering Change Notice |
ECO |
Engineering Change Order |
ED |
Equipment Degrade |
EDF |
Erbium-Doped Fiber |
EDFA |
Erbium-Doped Fiber Amplifier |
eDOCSIS |
Embedded Data-Over-Cable Service Interface Specifications |
EEE |
Electronic Equipment Enclosure |
EEPROM |
Electrically Erasable Programmable Read Only Memory |
EF&I |
Engineer, Furnish and Install |
EF |
Equipment Failure |
EFCI |
Explicit Forward Congestion Indication |
EFD |
Event Forwarding Discriminator |
EFEC |
Enhanced Forward Error Correction |
EFP |
Equipment Fault Protection |
EH |
Environmentally Hardened |
EIA |
Electronic Industries Alliance; Electronic Industries Association |
EID |
Equipment Identifier |
EIDE |
Enhanced Integrated Drive Electronics |
EIRP |
Effective Isotropic Radiated Power |
EJB |
Enterprise Java Beans |
ELAN |
Emulated Local Area Network |
ELR |
Extra Long Reach |
EM |
Element Manager |
EMC |
ElectroMagnetic Compatibility |
EMD |
Extended Management Domain |
EMEA |
Europe, Middle East and Africa |
EMBS |
Egress Maximum Burst Size |
EMG |
Extended Management Gateway |
EMI |
Electromagnetic Interference |
EML |
Element Management Layer; Electro-Absorptive Modulated Laser |
EMP |
Expiring Maintenance Process |
EMS |
Element Management System |
EMT |
Expiring Maintenance Tool |
eMTA |
Embedded Multimedia Terminal Adapter |
EMX |
ESCON MUX |
END |
Extended Management Domain |
ENE |
End Network Element |
ENUT |
Enhanced Non-preemptable Unprotected Traffic |
EO |
Equipment Order |
EOC |
Embedded Operations Channel |
EoD |
Everything on Demand |
EOF |
End of Frame |
EOL |
End of Life |
EOM |
End of Message |
EoS |
Ethernet over SONET/SDH |
EOW |
Engineered Orderwire; Express Orderwire |
E-PON |
Ethernet Passive Optical Network |
EPA |
Environmental Protection Agency |
EPCR |
Egress Peak Cell Rate |
EPD |
Early Packet Discard |
EPG |
Equipment Protection Group |
EPL |
Ethernet Private Line |
EPLD |
Erasable Programmable Logic Device |
EPROM |
Erasable Programmable Read Only Memory |
EQPT |
Equipment |
ER |
Extended Reach |
ERDI |
Enhanced Remote Defect Indicator |
EREI-P |
Enhanced Path Remote Error Indication |
Errcde |
Error Code |
ES |
Errored Second |
ESA |
EDFA Saturation Algorithm; End System Address |
ESCBND |
ESCON Bundle |
ESCON |
Enterprise System Connection; IBM Enterprise systems connection protocol |
ESCR |
Egress Sustainable Cell Rate |
ESD |
Electrostatic Discharge |
ESDS |
Electrostatic Discharge Sensitive |
ESF |
Extended Super Frame; Extended Superframe Format |
ES-FE |
Errored Seconds - Far End |
ESI |
End System Identifier |
ES-IS |
End System to Intermediate System |
ES-L |
Errored Seconds - Line |
ES-LFE |
Errored Second-Line Far End |
ES-MS |
Errored Seconds at the Mulitplexor Section |
ESMOP |
Electronic Service Method of Procedure |
ESN |
Extended Subnetwork |
ES-P |
Errored Seconds - Path |
ES-PFE |
Errored Seconds - Path Far End |
ESR |
Errored Second Ratio |
ES-RS |
Errored Second Regenerator Section |
ES-S |
Errored Seconds - Section |
EST |
Eastern Standard Time |
ES-V |
Errored Second-Virtual Tributary (VT) Path; Errored Second-VT Path Far End |
ESx |
Errored Second Count |
ET |
End Terminal; Entitlement Tracker |
Etag |
Ending Tag |
ETH |
10/100 Ethernet |
ETHBND |
Ethernet Bundle |
ETLMI |
ESCON Trib Laser Manager Interface |
ETR |
External Timing Reference |
ETSI |
European Telecommunications Standards Institute |
EU |
European Union |
EVM |
Error Vector Magnitude |
EVPL |
Ethernet Virtual Private Line |
EVPLAN |
Ethernet Virtual Private Local Area Network |
EWO |
Engineering Work Order |
EXER-R |
Exercise - Ring |
EXER-S |
Exercise - Span (SONET) |
EXP |
Experimental |
EXZ |
Excessive Zone |
F |
|
F |
Fahrenheit |
FA, F/A |
Fuse Alarm; Fault Alarm |
FAB |
Field Alert Bulletin |
FAD |
Functional Access Domain |
FAF |
Facility Failure |
F&I |
Furnish and Install |
FC |
Failure Code; Failure Count; Fiber Channel; Fibre Channel |
FC100 |
Fibre Channel 1 Gb/s |
FC200 |
Fibre Channel 2 Gb/s |
FC400 |
Fibre Channel 4 Gb/s |
FC10000 |
Fibre Channel 10 Gb/s (same as 10GFC) |
FCAPS |
Fault, Configuration, Accounting, Performance (or Provisioning), Security management |
FCC |
Federal Communications Commission |
FC-FE |
Failure Count - Far End |
FCIP |
Fiber Channel over Internet Protocol |
FC-L |
Failure Count - Line |
FC-LFE |
Failure Count - Line Far End |
FCM |
Fan Control Module |
FCP |
Fiber Channel Protocol |
FC-P |
Failure Count - Path |
FC-PFE |
Failure Count - Path Far End |
FCS |
Frame Check Sequence |
FC Switch |
Fiber Channel Switch |
FCS32 |
Count of FCS-32 Error |
FC-V |
Failure Count - VT |
FC-VFE |
Failure Count - VT Far End |
FDA |
Food and Drug Administration |
FDD |
Frequency Division Duplexed |
FDDI |
Fiber Distributed Data Interface |
FDF |
Fiber Distributing Frame |
FDL |
Facilities Data Link |
FDM |
Frequency Division Multiplexing; Fast Ethernet |
FDMA |
Frequency Division Multiple Access |
FDP |
Fiber Distribution Panel |
FDRP |
Frame Drop |
FE |
Far End; Fast Ethernet; Forward Error Correction |
FEAC |
Far End Alarm Channel |
FEACT |
Far-End Terminal Alarm Condition |
FEALM |
Far-End Alarm |
FEB |
Fast Ethernet Bridging |
FEBE |
Far End Block Error |
FEC |
Forward Error Correction; Forwarding Equivalence Class |
FECN |
Forward Explicit Congestion Notification |
FECS |
Forward Error Correction Seconds |
FEDS |
FICON Extended Storage over Distance |
FEP |
Far End Protection |
FEPLF |
Far End Protection Line Failure |
FEPM |
Far End Performance Monitor |
FERF |
Far End Receive Failure |
FET |
Field-Effect Transistor |
FF |
Fast Forward |
FFA |
First Field Application |
FFP |
Facility Fault Protection |
FFT |
Fast Fourier Transform |
FIB |
Forwarding Information Base |
FIC |
Frame Identification Code |
FICON |
Fiber Connection |
FIL |
Fiber in the Loop |
FIT |
Failure in Time |
FITB |
Fiber in the Building |
FITL |
Fiber in the Loop |
FITR |
Fiber in the Riser |
FM |
Fan Module; Fault Management; Forwarding Module; Frequency Modulation |
FMA |
Failure Modes Analysis |
FMECA |
Failure Mode and Effects and Criticality Analyses |
FMS |
Fault Management System |
FO |
Fiber Optics |
FOADM |
Fixed Optical Add/Drop Multiplexer; Flexible Optical Add/Drop Multiplexer |
FOD |
Free on Demand |
FOSC |
Fiber Optic Splice Course |
FOTS |
Fiber Optic Transmission System |
FP |
Fabry-Perot (type of laser); Frame Pulse (NEC) |
FPG |
Facility Protection Group |
FPGA |
Field Programmable Gate Array |
FPM |
Fan Power Module |
FPP |
Fast Pattern Processor |
FPS |
Frames per Second |
FR |
Frame Relay |
FRC |
Force |
FRD |
Functional Requirements Document; Feature Requirements Definition |
FREQ |
Frequency |
FRF |
Frame Relay Forum |
FRF.12 |
Frame Relay Forum Implementation Agreement 12 |
FRF.13 |
Frame Relay Forum Implementation Agreement 13 |
FRF.5 |
Frame Relay Forum Implementation Agreement 5 |
FRF.8.1 |
Frame Relay Forum Implementation Agreement 8.1 |
FRG |
Fragment Count |
FRM |
Forward Resource Management; Frame Count |
FRMS |
Dropped Frames |
FRU |
Field Replacement Unit |
FS |
File System |
FSA |
Field Service Application |
FSAN |
Full Services Access Network (consortium) |
FSB |
Field Service Bulletin |
FSO |
Free Space Optical |
FS-P |
Forced Switch - Protection |
FS-R |
Forced Switch - Ring |
FS-S |
Forced Switch - Span |
FS-W |
Forced Switch - Working |
FT-2000 |
SONET OC-48 lightwave system (AT&T) |
FTA |
Fault Tree Analysis |
FTAM |
File Transfer and Access Management |
FTC |
Fabric and Timing Card |
FTM |
Fabric Timing Module |
FTP |
File Transfer Protocol |
FTTB |
Fiber to the Building; Fiber to the Business |
FTTC |
Fiber to the Curb |
FTTD |
Fiber to the Desk |
FTTH |
Fiber to the Home |
FTTP |
Fiber to the Premise; Maintenance Channel Transparent Termination Point |
FTTx |
Fiber to the [endpoint] |
FUNI |
Frame-based User-Network Interface |
FW |
Firmware; Firewall |
FWHM |
Full Width at Half Maximum |
FWM |
Four-Wave Mixing |
G |
|
GA |
General Availability |
Gb |
Gigabit |
GB |
Gigabyte |
GbE |
Gigabit Ethernet |
GbE VFTP |
Gigabit Ethernet Virtual Facility Termination Point |
GbE WAN |
Gigabit Ethernet Wide Area Network |
GbE WIF |
Gigabit Ethernet Wide Area Network Interface |
GBIC |
Gigabit Interface Converter |
Gbps, Gbits |
Gigabits per second |
Gbytes/s |
Gigabytes per second |
GC |
Gateway Controller |
GCAC |
Generic Connection Admission Control |
GCC0 |
General Communications Channel 0 (similar to SDH/SONET DCC) |
GCIT |
Graphical Craft Interface Terminal |
GCM |
General Control Module |
GCRA |
Generic Cell Rate Algorithm |
GDMO |
Guidelines for the Definition of Managed Objects |
GE |
Gigabit Ethernet; Greater than or equal to |
GEB |
Gigabit Ethernet Bridge |
GET |
Gigabit Ethernet Tunneling |
GFA |
Gain Flattened Amplifier |
GFC |
Generic Flow Control |
GFF |
Gain Flattening Filter (used in EDFA) |
GFP |
Generic Framing Procedure |
GFR |
Guaranteed Frame Rate |
GHz |
Gigahertz; One billion cycles per second |
GMPLS |
Generalized Multi-Protocol Label Switching |
GMT |
Greenwich Mean Time; Grasshoppers Made for Telecommunications (GMT fuses) |
GN |
Gateway Network Element |
GNE |
Gateway Network Element |
GND |
Ground |
GOS |
Grade of Service |
GP |
Gateway Platform |
GPI |
General Purpose Input |
GPIN |
General Purpose Input |
GPO |
General Purpose Output |
G-PON |
Gigabit Passive Optical Network |
GPS |
Global Positioning System; Global Positioning Satellite |
GR |
Generic Requirement; Geographic Redundancy |
GRDM |
Gigabit Rate Data Multiplexer |
GRTES |
General Requirements for Transmission Equipment Specification |
GT |
Gain Transfer; Grating Temperature |
GT |
Gain Transfer; Grating Temperature |
GTP |
Group Termination Point |
GUI |
Graphical User Interface |
GW |
Gateway |
GWC |
Gateway Controller |
H |
|
HA |
High Availability |
HCFM |
High-speed Cell Forwarding Module |
HCSFI |
High-speed Central Switch Fabric Interface |
HD |
High Definition |
HD-SDI |
High Definition Serial Digital Interface |
HDB3 |
High Density Bipolar 3 |
HDCP |
High-bandwidth Digital Content Protection |
HDLC |
High-speed/level Data Link Control |
HDMI |
High Definition Multimedia Interface |
HDSF |
High-speed Distributed Switch Fabric |
HDT |
Host Digital Terminal |
HDTV |
High Definition Television |
HE |
Headend |
HEC |
Header Error Control; Headend Controller |
HEM |
Headend Modem |
HEPA |
High Efficiency Particulate Arrester |
HFC |
Hybrid Fiber Coax |
HFM |
High-speed Forwarding Module |
HGW |
Home Gateway |
HHP |
Households Passed |
HISSA |
High Speed Serial Application Specific Integrated Circuit (ASIC) |
HMS |
Hybrid Management Sub-layer |
HNv1 |
Home Networking Version 1 |
HO |
Higher Order |
HOVC |
Higher Order Virtual Concatenation |
HOD |
HBO on Demand |
HOM |
High-Order Modulation |
HomePNA |
Home Phoneline Networking Alliance |
HO-DSP |
High Order-Domain Specific Part |
HOP |
High Order Path |
HO-POH |
Higher Order - Path Overhead |
HO-DXC |
Higher Order Digital Cross Connect |
HP |
Hairpin; Higher Order Path; Homes Passed |
HPF |
High Pass Filter |
HPFM |
High-speed Packet Forwarding Module |
HPNA |
Home Phoneline Networking Alliance |
HPOV |
Hewlett Packard Open View |
HP-UX |
Hewlett Packard's UNIX-based OS that runs on HP's enterprise servers |
HRD |
Hardware Release Document; Hardware Requirements Document |
HS |
High Speed |
HSB |
High Speed Bus |
HSD |
High Speed Data |
HI |
Hardware/Software Interface; Hardware-Software Integration; High Speed Internet |
HSSI |
High Speed Serial Interface |
HT |
High Threshold |
HTML |
Hyper Text Markup Language |
HTTP |
Hypertext Transfer Protocol |
HVAC |
Heating, Ventilation, and Air-Conditioning |
HW |
Hardware |
Hz |
Hertz |
I |
|
I/O |
Input/Output |
IAD |
Integrated Access Device; Interface Access Device |
IAS |
Internet Access Service; Internet Authentication Service |
IBCC |
In-Band Communication Channel |
IC |
Integrated Circuit |
ICB |
Independent Customer Builds |
ICD |
International Code Designator |
ICLR |
Ingress Cell Loss Ratio |
ICMP |
Internet Control Message Protocol |
ICNV |
Input- Command Not Valid |
ICP |
IMA Control Protocol |
ICPT |
Installed Circuit Pack Type |
ICR |
Initial Cell Rate |
ID |
Identifier; Identification |
IDE |
Integrated Device Electronics |
IDF |
Intermediate Distribution Frame; Invalid Data Flag |
IDH |
Identification High byte |
IDI |
Initial Domain Identifier |
IDL |
Interface Definition Language |
IDNV |
Input- Data Not Valid |
IDP |
Initial Domain Part |
IDS |
Intrusion Detection System |
IDT |
Inter-DXC Trunk |
IE |
Information Element |
IEC |
Incoming Error Count; InterExchange Carrier |
IEEE |
Institute of Electrical and Electronics Engineers |
IETF |
Internet Engineering Task Force |
IF |
Intermediate Frequency |
IFC |
Initial First Cost |
IG |
Information Group |
IGMP |
Internet Group Multicast Protocol |
IIAC |
Input - Invalid Access Identifier |
IIOP |
CORBA Internet Inter-ORB Protocol |
IISP |
Interim Interface Signaling Protocol |
ILA |
Intermediate Light Amplification; Integrated Line Amplifier; In-Line Amplifier |
ILEC |
Incumbent Local Exchange Carrier |
ILM |
Integrated Laser Module; Integrated Laser Modulator |
ILMI |
Interim Link Management Interface; Interim Local Management Interface |
ILOG |
Information Log; Incoming Log |
ILR |
Issues List Report |
IM |
Instant Messaging |
IMA |
Inverse Multiplexing over ATM |
IMBS |
Ingress Maximum Burst Size |
IMD |
Intermodulation Distortion |
IME |
Interface Management Entity |
IMT |
Inter Machine Trunk |
IN |
Intelligent Network |
I-NET |
Institutional Network |
INM |
Integrated Network Manager |
INMS |
Integrated Network Management Suite; Integrated Network Management System |
INT |
Internal; Internal Clock |
INTAP |
Interoperability Technology Association for information Processing |
INTP |
Internodal Tunneling Protocol |
INVW |
Invalid Word Count |
IntServ |
Integrated Services |
I/O |
Input/Output |
IOA |
Input/Output Adapter |
IOF |
Inter-office Fiber |
IOR |
Interoperable Object Reference |
IP |
Internet Protocol |
IPC |
Inter-process Communications; InterProcess or InterProcesser Control |
IPCR |
Ingress Peak Cell Rate |
IPG |
Inter-Packet Gap |
IPM |
Interested Party Multicast |
IPMS |
Interested Party Multicast Service |
IPPV |
Impulse Pay per View |
IPOA |
Internet Protocol over ATM |
IPsec |
Internet Protocol Security |
IPTA |
Internet Protocol Transport Agreement |
IPTV |
IP Television |
IR |
Intermediate Reach |
IRD |
Integrated Receiver/Decoder |
IRT |
Integrated Receiver/Transcoder |
IS |
In Service; Intermediate System |
ISA |
Industry Standard Architecture |
IS-ANR |
In Service - Abnormal |
IS-ANRST |
In Service - Abnormal and Restricted |
ISCC |
InterSwitch Communications Channel |
ISCR |
Ingress Sustainable Cell Rate |
iSCSI |
Internet Small Computer System Interface; SCSI Protocol over TCP/IP |
ISD |
Idle Signal Detection |
ISDN |
Integrated Services Digital Network |
IS-IS |
Intermediate System to Intermediate System |
ISM |
Industrial Scientific Medical |
IS-NR |
In Service - Normal |
ISO |
International Standards Organization |
ISP |
Internet Service Provider; Inside Plant |
IS-RST |
In Service - Restricted |
ISTP |
Internet Signaling Transport Protocol |
ISV |
Independent Software Vendor |
IT |
Information Technology |
ITA |
Installation, Test, and Acceptance |
ITC |
Independent Transmit Clock |
ITL |
International Telecommunications Union |
ITE |
Information Technology Equipment |
ITS |
Intelligent Transportation System; Institute for Telecommunications Sciences |
ITT |
International Telephone and Telegraph |
ITU |
International Telecommunication Union |
ITU-T |
International Telecommunications Union - Telecommunications Standards Section |
IUC |
Interval Usage Code |
IWF |
Interworking Function |
IXC |
Inter-exchange Carrier |
J |
|
J0 |
J Zero; Section trace byte in performance monitoring (J-zero) |
J2EE |
Java 2 Enterprise Edition |
JBR |
Jabber Count |
JDBC |
Java Database Connectivity |
JDK |
Java Development Kit |
JDMK |
Java Dynamic Management Kit |
JEM |
JAVA™ Element Manager |
JMS |
JAVA™ Messaging System |
JNDI |
Java Naming and Directory Interface |
JRE |
Java Runtime Environment |
JTAG |
Joint Test Action Group |
JVM |
Java Virtual Machine |
K |
|
K1 |
SONET or SDH overhead byte of VLSR or MSP/MS-SPRing (see K2) |
K2 |
Used with K1-SONET or SDH overhead byte for VLSR or MSP/MS-SPRing |
Kb |
Kilobit |
KB |
Kilobyte |
Kb/s |
Kilobits per second |
KB/s |
Kilobytes per second |
Kbit/s |
Kilobits per second |
Kbps |
Kilobits per second |
KBps |
Kilobytes per second |
kHz |
KiloHertz |
Km |
Kilometer |
Ksh |
Korn Shell |
ksym/s |
Kilosymbols per Second |
ksym/sec |
Kilosymbols per Second |
kVA |
1000 Volt Amperes |
kW |
Kilowatt |
L |
|
L |
Current |
L2TP |
Layer 2 Tunneling Protocol |
L3 |
Layer 3 |
LA |
Line Adapter |
LAC |
Local Access Concentrator |
LADM |
Linear Add/Drop Multiplexer |
LAN |
Local Area Network |
LANE |
Local Area Network Emulation |
LAP |
Link Access Procedure; Link Access Protocol |
LAPB |
Link Access Procedure Balanced |
LAPD |
Link Access Procedure-D Channel (X 25) |
LAPF |
Link Access Procedure for Frame-Mode Bearer Services |
LAPS |
Link Access Procedure |
LASER |
Light Amplification by Stimulated Emission of Radiation |
LATA |
Local Access and Transport Area |
LBC |
Laser Bias Current |
LBCL |
Laser Bias Current Level |
LBCN |
Normalized Laser Bias Current |
LBO |
Line Build Out |
LC |
Lucent Connector; Line Card |
LCAP |
Local Craft Access Panel |
LCAS |
Link Capacity Adjustment Scheme |
LCC |
Life-Cycle cost; Link Control Channel |
LCD |
Liquid Crystal Display |
LCL |
Lower Confidence Limit |
LCN |
Local Computer Network; Logical Channel Number; Local Communications Network |
LCR |
Least Cost Routing |
LCT |
Large Capacity Terminal |
LD |
Laser Diode |
LDAP |
Lightweight Directory Access Protocol |
LDCC |
Line Data Communications Channel |
LDP |
Label Distribution Protocol |
LDS |
Local Digital Switch |
LEAF |
Large Effective Area Fiber |
LEC |
Local Exchange Carrier |
LECS |
LAN Emulation Configuration Server |
LED |
Light Emitting Diode |
LER |
Label Edge Router |
LES |
LAN Emulation Server |
LF |
Line Fail |
LFE |
Line Far End |
LGN |
Logical Group Node |
LGX |
Light-Guide Crossconnects |
LH |
Logical Host |
LIC |
Line Interface Card |
LIF |
Line Interface |
LIM |
Line Interface Module |
LIP |
Local Information Packet |
LIU |
Line Interface Unit |
LLC |
Logical Link Control |
LLSDCC |
Lower-Layer Section DCC |
LM |
Line Module |
LMI |
Local Management Interface |
LMP |
Link Management Protocol |
LO |
Low Order |
LOADM |
Lightweight Optical Add/Drop Multiplexer |
LOC |
Loss of Clock |
Locn |
Location |
LOF |
Loss of Frame |
LOF-P |
Path Loss of Frame |
LOH |
Line Overhead |
LOM |
Loss of Multiframe; List of Materials |
LOP |
Loss of Pointer |
LOPDP |
Loss of Pointer Decay Period |
LOPI |
Loss of Pointer Inhibit |
LOPIP |
Loss of Pointer Integration Period |
LOP-P |
Loss of Pointer - Path |
LOP-V |
VT Loss of Pointer |
LOS |
Loss of Signal |
LOSS |
Loss of Signal Seconds |
LOVC |
Low-Order VC |
LOW |
Local Orderwire |
LO-DXC |
Low Order Digital Cross Connect |
LP |
Line Processor; Lockout of Protection; Low Order Path |
LP-S/SF-P |
Lockout of Protection - Span/Signal Fail - Protection |
Lport |
Logical port |
LP-S |
Lockout of Protection - Span |
LR |
Long Reach (fiber); Line Regeneration Equipment |
LRDC |
Long Reach Daughter Card |
LSA |
Low Speed ADM |
LSA-E-EH |
Low Speed ADM Electrical (10/100 Base-T) Environmentally Hardened |
LSA-O-EH |
Low Speed ADM Optical (100 Base-FX) Environmentally Hardened |
LSB |
Least Significant Bit |
LSF |
Loss of Signal or Frame indication signal |
LSL |
Lower Specification Limit |
LSM |
Loss of Sync Message |
LSN |
Logical Subnetwork |
LSP |
Label Switched Path; Local Service Provider |
LSR |
Label Switch Router |
LSSGR |
LATA Switching System Generic Requirements |
LT |
Low Threshold; Laser Temperature |
LTE |
Line Terminating Equipment |
LTN |
Local Transport Network (fiber ring) |
LTP |
Link Termination Point; Logical Termination Point |
LTS |
Loop Testing System; Long Term Storage |
LU |
Line Unit |
LVD |
Low-Voltage Distribution |
LWP |
Low Water Peak |
LZS |
Lempel Ziv Stac |
M |
|
M12 |
MUX DS-1 into DS2 |
M13 |
MUX DS-1 into DS3 |
M23 |
MUX DS-2 into DS3 |
MAC |
Media Access Control; Medium Access Control |
MAN |
Metropolitan Area Network |
MAP |
Main Audio Program |
MAU |
Media Access Unit |
Mb |
Megabit |
MB |
Megabyte |
Mbaud |
Megabaud |
Mb/s |
Megabits per second |
Mbits/s |
Megabits per second |
Mbps |
Megabits per second |
MBps |
Megabytes per second |
MB/s |
Megabytes per second |
MBS |
Maximum Burst Size |
MCP |
Management Control Processor |
MCT |
Maintenance Channel Transparency |
MCTF |
Motion Compensated Temporal Filtering |
MD |
MetroDirector K2 Platform |
mDVR |
Multi-TV Digital Video Recorder |
MCR |
Minimum Cell Rate; Minimum Cost Routing |
MDF |
Main Distribution Frame |
MDU |
Multiple Dwelling Unit |
MEA |
Mismatch of Equipment and Attributes |
MEGACO |
Media Gateway Control Protocol |
MER |
Modulation Error Ratio |
MFR |
Multilink Frame Relay |
MG |
Media Gateway |
MGC |
Media Gateway Controller |
MGCP |
Media Gateway Control Protocol |
MGN |
Management Gateway Node |
MHz |
Megahertz |
MIB |
Management Information Base |
MID |
Message Identifier |
MIPS |
Millions of Instructions per Second |
MIT |
Management Information Tree |
MJ |
Major |
ML |
Mediation Layer |
MLMD |
Multiplexer/Demultiplexer |
MLPPP |
Multi-Link Point-to-Point Protocol |
mm |
millimeter |
MM |
Multimode; Multimedia |
MME |
Multiwave Management Element |
MMF |
Multi-Mode Fiber |
MML |
Man Machine Language |
MMO |
Main Material Order |
MMP |
Multiwave Management Element |
MN |
Minor |
MO |
Managed Object |
MOD |
Module; Movies on Demand |
MODEM |
Modulator-Demodulator |
MOF |
Managed Object Framework |
MOP |
Method of Procedure |
MOR |
Multi-wavelength Optical Repeater |
MOS |
Mean Opinion Score |
MP3 |
MPEG-2 Layer 3 |
MP |
Management Portal |
MPCKTS |
Multicast Packet Count |
MPEG |
Moving Pictures Expert Group |
MPI |
Multi-Path Interface; Multi-Path Interference |
MPLmS |
Multi-Protocol Lambda Switching |
MPLS |
Multi Protocol Label Switching |
MPLS-CP |
MPLS Control Plane |
MPN |
Mode Partition Noise |
MPS |
Modeling and Planning Suite |
MPOA |
Multi Protocol over Asynchronous Transfer Mode |
MPS |
Modeling and Planning System; Modeling and Planning Suite |
MPT |
Multiplex Pass-Through |
MPTS |
Multiple Program Transport Stream |
M-Plane |
Management Plane |
MR |
Modification Request; Material Request; Medium Reach |
MRRB |
Maintenance Requirements Review Board; Material Release Review Board |
ms |
Milliseconds |
MS |
Multiplex Section |
MS-AIS |
Multiplex Section - Alarm Indication Signal |
MSA |
Mediation Services Administrator |
MSB |
Most Significant Bit |
MSC |
Metro Shelf Controller; Microsoft Cluster Server |
MSF |
Multiservice Switching Forum |
MSM |
Metro Switching Manager; Metro Switching Mismatch |
MSN |
Multi-Subnetwork |
MSNM |
Metro Switching Network Manager |
MSNM ML |
Metro Switching Network Manager Mediation Layer |
MSO |
Multiple System Operator |
MSOH |
Multiplexer Section Overhead |
MSP |
Multiplex Section Protection; Multiservice Switching Path |
MSPP |
Multiservice Provisioning Platform |
MS-P |
Manual Switch - Protection |
MSPVC |
Management Soft Permanent Virtual Circuit |
MS-R |
Manual Switch - Ring |
MS-RDI |
Multiplex Section - Remote Defect Indication |
MS-REI |
Multiplex Section Remote Error Indication |
MS-S |
Manual Switch - Span |
MS-Spring/MSPR |
Multiplex Section Shared Protection Ring |
MST |
Mountain Standard Time; Multiplex Section Termination |
MSTE |
Multiplex Section Terminating Equipment |
MS-W |
Manual Switch - Working |
MTA |
Multimedia Terminal Adapter |
MTBF |
Mean Time between Failure |
MTIE |
Maximum Time Interval Error |
MTM |
Metro Transport Manager |
MTTP |
Transparent Connection Termination Point |
MTTR |
Mean Time to Repair |
MTTU |
Mean Time to Understand |
MTU |
Maximum Transmission Unit |
MUX |
Multiplexer |
MUXCVR |
Muxceiver |
mV |
Millivolt |
MVOA |
Miniature Variable Optical Attenuator |
MW |
MultiWave® |
MZ |
Mach-Zehnder |
N |
|
NA |
No Alarm; Not Alarmed; Not Applicable; Not Available; Numerical Aperture |
NAD |
Network Access Domain |
NAP |
Network Access Point |
NAPT |
Network Address and Protocol Translation |
NAS |
Network Access Server; Network Attached Storage |
NAT |
Network Address Translation |
NBI |
Northbound Interface |
NBK |
No Backup |
NC |
Nodal Controller; Normally Closed (contacts) |
NCC |
Network Control Center |
NCCI |
Network Call Correlation Identification |
NCP |
Nodal Control Point; Nodal Control Processor |
NCP&D |
Network Capacity Planning and Delivery |
NCR |
Non-Conformance Report |
NCS |
Network Computing System; Network Control System; Network Call Signaling |
NCTA |
National Cable & Telecommunications Association |
NDC |
National Destination Code |
NDF |
New Data Flag |
NDIS |
Network Design and Inventory System |
NDMH |
Non-Degraded Modem Hours |
NDP |
Network Discovery Protocol; Neighbor Discovery Protocol |
NDSF |
Non-Dispersion Shifted Fiber |
NDVR |
Network Digital Video Recording |
NE |
Network Element |
NEBS |
Network Equipment Building Standards; Network Equipment Building Systems |
NEC |
National Electric Code |
NEF |
Network Element Function |
NE/FE |
Near End/Far End |
NEG |
Negative Terminal |
NEID |
Network Element Identification |
NEIR |
Network Element Information Request |
NEMA |
National Electrical Manufacturers Association |
NFS |
Networked File System |
NGDLC |
Next Generation Digital Loop Carrier |
NG-L1 |
Next Generation Layer 1 |
NGNA |
Next Generation Network Architecture |
NI |
Network Interface |
NIC |
Network Interface Card |
NID |
Network Interface Device |
NIDU |
Network Interface Data Unit |
NIS |
Network Infrastructure Solutions |
NIU |
Network Interface Unit |
NLA |
Network Layer Address; Network Layer Agent |
NLC |
Node Line Card |
NLD |
Neighbor Link Discovery |
NLPI |
Network Layer Protocol Identifier |
nm |
nanometer |
NM |
Network Management; Network Manager; Network Management; Node Manager |
NMA |
Network Monitoring and Analysis |
NME |
Network Management Ethernet |
NMF |
Node-level Management Function |
NML |
Network Management Layer |
NMS |
Network Management System |
NN |
N key on keyboard for a no response |
NNI |
Network to Network Interface; Network Node Interface |
NNIF |
Network to Network Interface |
NNM |
Network Node Manager |
NNTP |
Network News Transfer Protocol |
NO |
Network Object; Normally Open (contacts) |
NOC |
Network Operations Center |
NOCC |
Network Operations Control Center |
NPC |
Network Parameter Control |
NPR |
Noise Power Ratio |
NR |
No Reply |
NRT |
Non-Real Time |
NRTL |
Nationally Recognized Test Laboratory |
NRTVBR |
Non Real-Time Variable Bit Rate |
NRZ |
Non-Return to Zero |
ns |
Nanosecond |
NSA |
Non Service Affecting |
NSAP |
Network Service Access Point |
NSI |
Network Side Interface |
NSN |
Nationally Significant Number |
NSP |
Node Switch Provider; Node Switch Processor |
NT |
Window New Technology |
NTF |
No Trouble Found |
NTFCNCDE |
Notification Codes (TL1) |
NTFS |
New Technology File System |
NTP |
Network Time Protocol |
NTS |
Near Term Storage; Network Time Synchronization |
NTSC |
National Television Standards Committee |
NUT |
Non-preemptive Unprotected Traffic |
NVM |
Non-Volatile Memory |
NVRAM |
Nonvolatile Random Access Memory |
NZDSF |
Non-Zero Dispersion Shifted Fiber |
O |
|
OA |
Optical Amplifier |
OADM |
Optical Add/Drop Multiplexer |
OAM |
Operations, Administration and Maintenance |
OAMCell |
Operations, Administration and Maintenance Cell |
OAMP |
Operation, Administration, Maintenance and Provisioning |
O-BLSR |
Optical-Bidirectional Line Switched Ring |
OC |
Optical Carrier |
OCAP |
OpenCable Application Platform |
OCH |
Optical Channel |
OCI |
Open Connection Indication |
OCT |
Octet Count |
OC-1 |
Optical Carrier level 1, SONET bit rate = 51.84 Mb/s |
OC-3 |
Optical Carrier level 3, SONET bit rate = 155.52 Mb/s |
OC-12 |
Optical Carrier level 12, SONET bit rate = 622.08 Mb/s |
OC-48 |
Optical Carrier level 48, SONET bit rate = 2.488 Gb/s |
OC-192 |
Optical Carrier level 192, SONET bit rate = 9.953 Gb/s |
OC-n |
Optical Carrier-number; Optical Carrier where N denotes a multiple of 51.84 Mb/s |
OCTU |
Optical Channel Transport Unit |
OCXO |
Oven-Controlled Crystal Oscillator |
ODA |
Outlet Digital Adapter |
ODACS |
Optical Data Acquisition and Control System |
ODBMS |
Object Database Management System |
ODF |
Optical Distribution Frame |
ODPR |
Optically Dedicated Protection Ring |
ODUk |
Optical channel Data Unit where k is 1 or 2 |
OEO |
Optical-to-Electronic-to-Optical |
OEPL |
Optical Ethernet Private Line |
OEPLAN |
Optical Ethernet Private Local Area Network |
OEVPL |
Optical Ethernet Virtual Private Line |
OEVPLAN |
Optical Ethernet Virtual Private Local Area Network |
OFC |
Open Fiber Control; Optical Fiber Communication |
OFDM |
Orthogonal Frequency Division Multiplexing |
OFS |
Out of Frame Second |
OID |
Object Identifier |
OIU |
Operator Interface Unit; Optical Interface Unit; Office Interface Unit |
OLA |
Optical Line Amplifier; Optical Link Analysis |
OLB |
Optical Link Budget |
OLM |
Optical Link Module |
OLMP |
Optical Link Management Protocol |
OLS |
Optical Line System |
OLT |
Optical Line Termination; Optical Line Terminal |
OLTP |
OSRP Link Termination Point |
OM |
Optical Module |
OMC |
Operation and Maintenance Center |
OMG |
Object Management Group |
OMS |
ON-Center Management Suite |
ON |
Optical Network |
ONE |
Optical Network Element |
ONM |
ON-Center Network Manager |
ONT |
Optical Network Terminal |
ONU |
Optical Network Unit |
OO |
Optical-to-Optical |
OOB |
Out of Band |
OOF |
Out of Frame |
OOK |
On-Off Keying |
OOM1 |
Out of Multi Frame Stage 1 |
OOM2 |
Out of Multi Frame Stage 2 |
OOO |
Optical - Optical - Optical |
OOR |
Out of Range |
OOS |
Out of Service |
OSS-AU |
Out of Service-Autonomous |
OSS-AUMA |
Out of Service-Autonomous and Management |
OSS-AURST |
Out of Service-Autonomous and Restricted |
OOS-MA |
Out of Service-Management |
OOS-MAANR |
Out of Service-Management and Abnormal |
OpEx |
Operations Expenditure |
OPM |
Optical Performance Monitoring; Optical Power Meter |
OPR |
Optical Power Received |
OPS/INE |
Operations Provisioning System/Intelligent Network Element |
OPT |
Optical Power Transmit |
OPTORL |
Optical Return Loss |
OPTX AE |
OPTX Automation Engine |
OPTX NM |
OPTX Network Manager |
OpUk |
Optical channel payload Unit where k is 1 or 2 |
OPVC |
Optical channel Payload Virtual Container (timeslot) |
ORB |
Object Request Broker |
ORIG |
Original; Originating |
ORL |
Optical Return Loss |
ORP |
Optical Routing Protocol |
OS |
Operating System |
OSA |
Optical Spectrum Analyzer |
OSC |
Optical Supervisory Channel; Optical Service Channel |
OSDS |
Operations Systems Data Server |
OSGI |
Open Services Gateway Initiative |
OSHA |
Occupational Safety and Health Act |
OSI |
Open Systems Interconnection |
OSM |
OSC Splitter Module |
OSMINE |
Operations Systems Modifications for the Integration of Network Elements |
OSNR |
Optical Signal-to-Noise Ratio; Open Signal-to-Noise Ratio |
OSP |
Optical Signaling Protocol; Outside Plant |
OSPF |
Open Shortest Path First |
OSPR |
Optically Shared Protection Ring |
OSRP |
Optical Signaling and Routing Protocols |
OSS |
Operations Support System |
OSSAN |
Operations Support System Access Nodes |
OSWF |
On-site Work Force |
OTC |
Operations Technical Center; Optical Transport Card |
OTDR |
Optical Time Domain Reflectometer |
OTGR |
Operations Technology Generic Requirements |
OTN |
Optical Transport Network |
OTS |
Optical Transport System |
OTS RPTR |
OTS Repeater |
OTU |
Optical Transport Unit |
OUI |
Organizationally Unique Identifier |
OUNI |
Optical User Network Interface |
O-UPSR |
Optical-Unidirectional Path Switched Ring |
OUSM |
Optical Utility Services Manager |
OUSP |
Optical Utility Services Platform |
OW |
Order Wire |
OXC |
Optical Cross Connect |
P |
|
P2P |
Peer to Peer |
PA |
Port Adapter; Pre-Amplifier |
PAD |
Power Attenuation Device |
PAN |
Personal Area Networking |
PARP |
Proxy ARP |
PAT |
Program Association Table |
PAX |
Path Adaptation and X-Connect |
PB |
Petabyte |
PBX |
Private Branch Exchange |
PBOR |
Primary-Backup Object Replication |
PC |
Personal Computer; Physical Contact; Processor Card |
PCA |
Protection Channel Access |
PCB |
Printed Circuit Board |
PCC |
Processor Communication Channel |
PCI |
Peripheral Component Interconnect |
PCN |
Program Change Notice; Product Change Notice |
PCM |
Pulse Code Modulation |
PCMCIA |
Personal Computer Memory Card Interface Adaptor |
PCMM |
PacketCable Multimedia |
PCO |
Pre-Conditioned Order |
P-Code |
Product Code |
PCR |
Peak Cell Rate |
PDA |
Personal Digital Assistant |
PDAP |
Power Distribution and Alarm Panel |
PDC |
Passive Dispersion Compensator |
PDF |
Portable Document Format |
PDH |
Pleisiochronous Digital Hierarchy |
PDI |
Payload Defect Indication |
PDL |
Polarization Dependent Loss |
PDP |
Policy Decision Point |
PDU |
Power Distribution Unit; Protocol Data Unit |
PEG |
Public, Education, Government |
PEM |
Processor Enhancement Module; Processor Element Module |
PEP |
Policy Enforcement Point |
PESQ |
Perceptual Evaluation of Speech Quality |
PFE |
Path Far End |
PFM |
Packet Forwarding Module |
PFO |
Premium Feature Open |
PG |
Peer Group; Protection Group |
PGID |
Peer Group Identifier |
PGL |
Peer Group Leader |
PHY |
Physical Layer Device; Physical |
PIC |
Programmable Interrupt Controller |
pid |
Password Identifier |
PID |
Personally Identifiable Data; Protocol Identifier; Packet Identifier; Personal Identification |
PIF |
Packet Interface FPGA |
PIN |
Photo Intrinsic; Positive-Intrinsic Negative; Personal Identification Number |
PING |
Packet Internet Groper |
PIP |
Plug-In Provisioning |
PJ |
Pointer Justification |
PL |
Packet Loss |
PLC |
Packet Loss Concealment |
PLCN |
Pilot Line Change Notification |
PLCP |
Physical Layer Convergence Protocol |
PLD |
Programmable Logic Device |
PLL |
Phase Locked Loop |
PLM |
Payload Label Mismatch |
PLM-P |
Payload Label Mismatch - Path |
PLM-V |
Payload Label Mismatch - VT |
PLN |
PNNI Logical Node |
PLO |
Path Layer Overhead |
PM |
Performance Management; Performance Monitoring; Program Manager; Project Manager |
PMA |
Power Management Algorithm |
PMBB |
Performance Monitoring Building Block |
PMD |
Polarization Mode Dispersion |
PMDC |
PMD Compensator |
PMM |
Power Management Module |
PMP |
Point-to-MultiPoint |
PN |
Physical Node |
PNC |
Physical Node Controller |
PNNI |
Private Network-to-Network Interface; Private Network Node Interface |
PO |
Purchase Order |
POH |
Path Overhead |
PON |
Passive Optical Network |
POP |
Point of Presence |
POR |
Power on Reset |
POS |
Packet over SONET; Positive Terminal |
POST |
Power on Self Test |
POTS |
Plain Old Telephone Service |
PPC |
Power PC |
PPD |
Partial Packet Discard |
PPJC |
Positive Pointer Justification Count |
PPL |
Point-to-Point Link |
ppm |
Pulse Position Modulation; Pulses per Million |
PPM |
Parts per Minute; Parts per Million; Pulses per Million |
Pport |
Physical port |
PPP |
Point-to-Point Protocol |
PPS |
Path Protection Switched; Pulses per Second |
PPT |
Power Passing Tap |
PRBS |
Pseudo Random Bit Sequence |
PRC |
Primary Reference Clock |
PRI |
Primary Rate Interface |
PROM |
Programmable Read Only Memory |
PROT |
Protocol; Protection |
PRNG |
Pseudo Random Number Generators |
PRS |
Primary Reference Source |
PS |
Power Supply; Policy Server |
ps/nm-km |
Pico-second |
PSA |
PacketCable Service Agreement |
PSBF |
Protection Switching Byte Failure |
PSC |
Protection Switching Count |
PSD |
Protection Switching Duration |
PSEL |
Presentation Suite |
PSI |
Program Specific Information |
PSL |
Path Signal Label |
PSM |
Persistent Stored Module |
PSN |
Packet Switch Node; Packet Switched Network |
P-SNC |
Permanent SNC |
PSQM |
Perceptual Speech Quality Measurement |
PSR |
Protection Side Regeneration; Path Switched Ring |
PST |
Primary State; Pacific Standard Time |
PSTN |
Public Switched Telephone Network |
PSU |
Power Supply Unit; Packet Switch Unit |
PT |
Pass-Through; Payload Type |
PTE |
Path Terminating Equipment |
PTI |
Payload Type Indicator |
PTP |
Physical Termination Point; Point-To-Point; Path Termination Point |
PTSE |
PNNI Topology State Element |
PTSP |
PNNI Topology State Packet |
PV |
Protocol Violation |
PVC |
Permanent Virtual Circuit; Poly Vinyl Chloride; Private Virtual Circuit |
PVR |
Personal Video Recorder |
PWB |
Printed Wire Board |
PWM |
Pulse Width Modulation |
PWR |
Power |
Q |
|
Q3 |
Telecommunications Management Network (TMN) Interface |
QAM |
Quadrature Amplitude Modulation |
QL |
Quality Level |
QMC |
QUICC Multichannel Controller |
QoS |
Quality of Service |
QPSK |
Quadrature Phase Shift Keying |
QUICC |
Quad Integrated Communications Controller |
R |
|
R&D |
Research and Development |
R/W |
Read/Write |
RADIUS |
Remote Authentication Dial-In User Service |
RAI |
Remote Alarm Indication |
RAID |
Redundant Array of Inexpensive Disk; Redundant Array of Independent Disk |
RAIG |
Resource Availability Information Group |
RAM |
Random Access Memory |
RAN |
Regional Area Network |
RBF |
Reconfigurable Blocking Filter |
RBOC |
Regional Bell Operating Company |
RBM |
Regional Business Manager |
RBW |
Resolution Bandwidth |
RCC |
Routing Control Channel |
RCV |
Receiver |
RCVR |
Receiver |
RDF |
Rate Decrease Factor |
RDI |
Remote Defect Indication |
RDI-L |
Remote Defect Indication - Line |
RDI-P |
Remote Defect Indication - Path |
RED |
Random Early Detection; Random Early Discard |
REF |
Reference |
REI |
Remote Error Indication |
REI-L |
Remote Error Indication - Line |
REI-P |
Remote Error Indication - Path |
Rev. |
Revision |
RF |
Radio Frequency |
RFC |
Request for Comment |
RFI |
Radio Frequency Interference; Remote Failure Indication; Request for Information |
RFI-L |
Remote Failure Indication (detected at the line-layer) |
RFI-P |
Remote Failure Indication (detected at the path-layer) |
RG |
Residential Gateway |
R.H. |
Relative Humidity |
RHC |
Regional Holding Company |
RIB |
Routing Information Base |
RIN |
Relative Intensity Noise |
RIP |
Routing Information Protocol |
RJ |
Registered Jack |
RKS |
Record Keeping Server |
RMA |
Return Material Authorization; Replace Material Authorization |
RMAN |
Recovery Manager |
RMI |
Remote Method Invocation |
RMS |
Root Mean Square |
RNR |
Not Ready to Receive; Remote Failure Indication |
ROADM |
Re-configurable Optical Add/Drop Multiplexer |
ROC |
Regional Operations Center |
ROI |
Return on Investment |
ROM |
Read Only Memory |
RPM |
Revolutions per Minute |
RPR |
Resilient Packet Ring |
RR |
Ready to Receive; Reverse Request |
RRB |
Reliability Review Board |
RRO |
Record Route Object |
RR-R |
Reverse Request - Ring |
RR-S |
Reverse Request - Span |
RS |
Regenerator Section; Reed-Solomon |
RS-E |
Ring Switch - East |
RSOH |
Regenerator Section Overhead |
RSP |
Route Switch Processor |
RST |
Regenerator Section Terminating |
RSVP |
Resource Reservation Protocol |
RSVP-TE |
Resource Reservation Protocol with Traffic Engineering |
RS-W |
Ring Switch - West |
RT |
Remote Terminal; Real Time |
RTC |
Real-Time Clock |
RTI |
Real-Time Ingest |
RTN |
Return (voltage return) |
RTOS |
Real-Time Operating System |
RTP |
Routing Table Protocol; Real-Time Transport Protocol; Routine Task Procedure |
RTRV |
Retrieve |
RTS |
Ready to Send; Request to Send; Real Time Operation System |
RTSP |
Real Time Streaming Protocol |
RTT |
Round-trip Time |
RTU |
Right to Use |
RTVBR |
Real-Time Variable Bit Rate Traffic |
RU |
Rack Unit |
RW |
Rewind |
RWA |
Routing and Wavelength Assignment |
R/W |
Read/Write |
RX |
Receive |
Rx Line |
Receive Line |
RZ |
Return to Zero |
RZ-DPSK |
Return to Zero Differential Phase Shift Keying |
S |
|
s |
Second |
s.f. |
Square Foot |
S/IMP |
Signal to Impulse Ratio |
S/N |
Signal to Noise Ratio |
SA |
Service-Affecting |
SAAL |
Signaling ATM Adaptation Layer |
SABLIME |
Product Administration System (AT&T) |
SADM04-e |
SONET/SDH Add/Drop Multiplexer (ONLINE Edge Platform) |
SAN |
Storage Area Network |
SAP |
Secondary Audio Program |
SAR |
Segmentation and Reassembly |
SARP |
Switching Address Resolution Protocol |
SAS |
Severely Errored Frame and AIS Seconds |
SASE |
Standalone Synchronization |
SATA |
Serial AT Attachment |
SATT |
Synchronization, Alarms, and Telemetry Termination |
SAW |
Surface Acoustic Wave |
SBLK |
Errored Superblocks |
SBS |
Stimulated Brillouin Scattering |
SBV |
Switched Broadcast Video |
SBW |
Signal Bandwidth |
SC |
Service Channel; Square Connector; Shelf Controller |
SCC |
Serial Communications Controller; Serial Communications Channels |
SCCI |
Small Computer System Interface |
S-CDMA |
Synchronous Code Division Multiple Access |
SCM |
Service Channel Modem; Sub-carrier Multiplexing |
SCN |
Service Channel Network; Shared Content Network |
SCR |
Sustainable Cell Rate; Silicon Controlled Rectifier |
SCSI |
Small Computer System Interface |
SCTE |
Society of Cable Telecommunications Engineers |
SD |
Signal Degrade; Signal Detect; Standard Definition |
SDCC |
Section Data Communications Channel |
SDH |
industries_cable Synchronous Digital Hierarchy |
SDI |
Secure Digital Interface; Serial Digital Interface |
SDL |
Synchronous Data Link; Synchronous Delay Line |
SDLC |
Synchronous Data Link Control |
SDMH |
Severely Degraded Modem Hours |
SDP |
Session Description Protocol |
SD-P |
Signal Degrade - Path |
SD-R |
Signal Degrade - Ring |
SDRAM |
Synchronized Dynamic Random Access Memory |
SD-S |
Signal Degrade-Span |
SDTV |
Standard Definition Television |
SDU |
Service Data Unit |
SE |
Systems Engineer |
SEAL |
Simple and Efficient Adaptation Layer |
SEC |
Secondary |
SEF |
Severely Errored Framing |
SEFS |
Severely Errored Frame Seconds |
SEFS-S |
Severely Errored Framing Seconds - Section |
SEM |
Service Entitlement Manager |
SEMS |
Severely Errored Multi-frame Seconds |
SerDes |
Serializer/DeSerializer |
SES |
Severely Errored Seconds |
SES-L |
Severely Errored Seconds - Line |
SES-LFE |
Severely Errored Seconds - Line Far End |
SES-P |
Severely Errored Seconds - Path |
SES-PFE |
Severely Errored Seconds - Path Far End |
SESR |
Severely Errored Second Ratio |
SES-RS |
Severely Errored Seconds - Regenerator Section |
SES-S |
Severely Errored Seconds - Section |
SES-V |
Severely Errored Seconds - VT |
SES-VFE |
Severely Errored Seconds - VT Far End |
SETS |
Synchronous Equipment Timing Source |
SF |
Signal Failure; Super Frame |
SFD |
Start of Frame Delimiter |
SFDADM02-e |
SONET/SDH Framed Data Add/Drop Multiplexer (ONLINE Edge Platform) |
SFF |
Small Form Factor (connector) |
SFO |
Sync Frequency Offset |
SFP |
Small Form-factor Pluggable |
SF-R |
Signal Failure - Ring |
SF-S |
Signal Failure - Span |
SG |
Signaling Gateway |
SGC |
Signaling Gateway Controller |
sh |
Bourne Shell |
SHx |
Shelf Number |
SI |
Serial Interface; Service Independent |
SIC |
System Integrity Control; Standard Industrial Classification |
SID |
System Identification number; Source Identifier |
SIF |
SONET Interoperability Forum; Switch Interface FPGA |
SIM |
Service Interface Module |
SIP |
Session Initiation Protocol |
SLA |
Service Level Agreement |
SLIP |
Serial Line Internet Protocol |
SLM |
Service Layer Manager |
SLOSS |
Synchronization Loss |
SLR |
Service Level Report |
SM |
Single Mode; Switching Module; Shelf Manager |
SMB |
Small and Medium Business |
SMC |
Serial Management Controllers; Standard Management Committee |
SMDS |
Switched Multimegabit Data Service |
SME |
Small and Medium Enterprise |
SMF |
Single Mode Fiber |
SMIR |
Single Mode Intermediate Reach |
SML |
Service Management Layer |
SMLR |
Single Mode Long Reach |
SMM |
Service Mediation Module |
SMON |
Switch Monitor |
SMOP |
Service Method of Procedure |
SMS |
Service Management Suite |
SMT |
Surface Mount Technology; Self-Monitoring Task |
S-MTA |
Standalone Multimedia Terminal Adaptor |
SNA |
Systems Network Architecture |
SNC |
Subnetwork Connection; Subnetwork Controller |
SNCP |
Subnetwork Connection Protection |
SNCP/I |
Subnetwork Connection Protection/Inherent monitoring |
SNCP/N |
Subnetwork Connection Protection/Non-intrusive monitoring |
SNM |
Switching Network Manager |
SNMP |
Simple Network Management Protocol |
SNP |
Sequence Number Protection |
SNR |
Signal-to-Noise Ratio |
SNTP |
Simple Network Time Protocol |
SOA |
Semiconductor Optical Amplifier |
SOADM |
Select Optical Add/Drop Multiplexer |
SOF |
Start of Frame |
SOH |
Section Overhead; State of Health |
SOHO |
Small Office/Home Office |
SONET |
industries_cable Synchronous Optical Network |
SOP |
Standard Operating Procedure |
SP |
Shelf Processor; Shelf Pump |
SPC |
SONET Permanent Circuit |
SPE |
Synchronous Payload Envelope |
SPF |
Shortest Path First |
SPI |
Serial Peripheral Interface; Service Provider Interface |
SPM |
Self-Phase Modulation |
SPR/SPRing |
Shared Protection Ring |
SPTP |
Service Path Termination Point |
SPVC |
Soft Permanent Virtual Connection; Soft Permanent Virtual Circuit |
SQL |
Structured Query Language |
SR |
Short Reach (fiber) |
SRAM |
Static Random Access Memory |
SRD |
Software Release Document |
SRN |
Software Release Notice |
SRS |
Stimulated Raman Scattering |
SRTS |
Synchronous Residual Time Stamp |
SRVEFF |
Service Affecting (TL1) |
SSB |
Single Sideband |
SSCOP |
Service Specific Connection Oriented Protocol |
SSCS |
Service-Specific Convergence Sublayer |
SSEL |
Session Selector |
SSF |
Server Signal Failure |
SSL |
Secure Sockets Layer |
SSM |
Synchronization-Status Messages |
SSMF |
Standard Single Mode Fiber |
SST |
Secondary Service State |
SSTUR |
Site-Specific Turn-Up Report |
SSU |
Synchronization Supply Unit |
ST |
Straight Terminus; Straight Tip |
ST1 |
Stratum 1 |
ST2 |
Stratum 2 |
ST3 |
Stratum 3 |
ST3E |
Stratum 3 Enhanced |
ST4 |
Stratum 4 (Asynchronous) |
STB |
Set-Top Box |
STC |
Stacking and Timing Card |
STE |
Section Terminating Equipment; Section Terminating Element |
STII (2) |
Type of optical connector |
STM |
Synchronous Transfer Mode |
STM-0 |
Synchronous Transfer Mode level 0, SDH bit rate = 51.84 Mb/s |
STM-1 |
Synchronous Transfer Mode level 1, SDH bit rate = 155.52 Mb/s |
STM-4 |
Synchronous Transfer Mode level 4, SDH bit rate = 622.08 Mb/s |
STM-16 |
Synchronous Transfer Mode level 16, SDH bit rate = 2488.32 Mb/s |
STM-64 |
Synchronous Transfer Mode level 64, SDH bit rate = 9953.28 Mb/s |
STM-n |
Synchronous Transport Module "n" |
STM-nC |
Synchronous Transport Module of level n concatenated |
STMX |
SONET/SDH Thin Multiplexer |
STP |
Spanning Tree Protocol; Shielded Twisted Pair |
STS |
Synchronous Transport Signal |
STS-1 |
Synchronous Transport Signal Level 1 |
STS-3 |
Synchronous Transport Signal Level 3 |
STS-3c |
Synchronous Transport Signal Level 3, concatenated |
STS-n |
Synchronous Transport Signal "n" |
STS-Nc |
Contiguous Concatenation of N STS-1 SPEs |
STS-N-Xv |
Virtual Concatenation of X STS-N SPEs |
STU |
Secure Telephone Unit; Synchronized, Traceability Unknown; Stratum Traceability Unknown |
STU-P |
Stratum Traceability Unknown-Provisioned |
SVC |
Switched Virtual Circuit |
SVCC |
Switched Virtual Channel Connection |
SVOD |
Subscription Video on Demand |
SVP |
Secure Video Processor |
SVPC |
Switched Virtual Path Connection |
SW |
Software |
SWCA |
Split Working Channel Access |
SWID |
Software Identifier |
SWOD |
Software ODACS |
SX |
Short Reach as in 1000Base-SX |
SYNC |
Synchronization |
SYNCIO |
Synchronized Input/Output |
SYSLOG |
System Log |
T |
|
T1 |
Service or line operation at the DS-1 rate |
T3 |
Digital Carrier System for DS3 Signals |
TAC |
Transport Aggregated Circuit; Technical Assistance Center |
TADR |
Target Address |
TADRMAP |
Target Address Map |
TAP |
Test Access Port; Technician Access Port |
TARP |
Target Identifier Address Resolution Protocol |
TB |
Terabyte |
TBOS |
Telemetry Byte Oriented Serial Protocol |
TBU |
Transport Bandwidth Unit |
TBUS |
Timing Bus |
TC |
Transmission Convergence; Transport Complex; Transport Channel |
TCA |
Threshold Crossing Alert; Timing Control and Access |
TCBE |
Total Corrected Bit Error |
TCM |
Trellis Coded Modulation; Transport Channel Members |
TCMO |
Transport Complex Managed Object |
TCP |
Transmission Control Protocol; Trouble Cleaning Procedure |
TCP/IP |
Transmission Control Protocol/Internet Protocol |
TCTP |
Transparent Connection Termination Point |
TD |
Traffic Director |
TDEV |
Time Deviation |
TDM |
Time Division Multiplexing |
TE |
Terminal Equipment |
TEAL |
CoreDirector® Events, Alarms, and Logging |
TEC |
Thermo-Electric Cooler |
TED |
Traffic Engineering Database |
TEI |
Terminal Endpoint Identifier; Terminal Equipment Identifier |
Telco |
Telephone Company |
TELR |
Talker Echo Loudness Rating |
TEO |
Telephone Equipment Order |
TERM |
Termination |
TFT |
Thin Film Transistor |
TFTP |
Trivial File Transfer Protocol |
TG |
Timing Generator |
TGCP |
Trunking Gateway Control Protocol |
TGS |
Time Generation System |
THEC |
Corrected Type Header Error Correction Code |
THz |
TeraHertz (1012 hertz) |
TIA |
Telecommunications Industry Association |
TID |
Target Identification; Terminal Identification |
TIE |
Time Interval Error |
TIM |
Trace Identifier Mismatch; Transmit Intermediate Multiplexer |
TIM-S |
Trace Identifier Mismatch - Section |
TIRKS |
Trunk Integrated Record Keeping System |
TISSA |
Time Space Switch Application-Specific Integrated Circuit |
TKIP |
Temporal Key Integrity Protocol |
TL-1 CLI |
Transaction Language One, Command Line Interface |
TL-1 |
Transaction Language 1 |
TLI |
Transaction Language Command Line Interface |
TLC |
Transport Logical Connection |
TLS |
Transparent LAN Services |
TLSR |
Transoceanic Line Switched Ring |
TLV |
Type-Length-Value |
TM |
Timing Module; Transaction Manager |
TML |
Telephony Markup Language |
TMN |
Telecommunications Management Network |
TMO |
Trans Metro Optical (platform) |
tmout |
Time Out |
tmper |
Time Period |
TMUX |
Terminal Multiplexer |
TNL |
Ethernet Tunneling |
TNM |
Transport Network Management |
TOD |
Television on Demand |
ToD |
Time of Day |
TOH |
Transport Overhead |
TOP |
Task Oriented Practice; Task Oriented Procedure |
TOS |
Type of Service |
TP |
Termination Point |
TPFI |
Timing Plane Fault Isolation |
TR |
Technical Reference |
TRIB |
Tributary |
tRTO |
TCP Retransmit Timeout |
TrTOH |
Transparent Transport Overhead |
TS |
Time Slot; Time Stamp; Time Synchronization |
TSA |
Time Slot Assignment |
TSD |
Transport System Division |
TSE |
Topology State Element |
TSEL |
Transport Selector |
TSF |
Transport Signal Failure |
TSG |
Timing Signal Generator |
TSI |
Time Slot Interchange; Time Switch Interchange |
TSR |
Technical Service Representative |
TSX |
Time-Space Switch ASIC |
TTE |
Transparent Terminal Equipment |
TTL |
Transistor Transistor Logic; Time to Live |
TTP |
Trail Termination Point |
TTTP |
Transparent Trail Termination Point |
TU |
Tributary Unit; Transmission Unit |
TUG |
Tributary Unit Group |
TUG-n |
Tributary Unit Group, level n |
TU-n |
Tributary Unit, level n |
TV |
Television |
TW |
TrueWave |
TWC |
TrueWave Classic |
Tx Line |
Transmit Line |
TX |
Transmit |
U |
|
UART |
Universal Asynchronous Receiver/Transmitter |
UAS |
Unavailable Seconds |
UAS-L |
Unavailable Seconds - Line |
UAS-LFE |
Unavailable Seconds - Line Far End |
UAS-P |
Unavailable Seconds - Path |
UAS-PFE |
Unavailable Seconds - Path Far End |
UAS-RS |
Unavailable Seconds - Regenerator Section |
UAS-S |
Unavailable Seconds - Section |
UAS-V |
Unavailable Seconds - VT |
UAS-VFE |
Unavailable Seconds - VT Far End |
UASL |
Unavailable Second Count-Line |
UASP |
Unavailable Second Count-Path |
UAT |
Unavailable Time |
UB |
Uncorrected Block |
UBRVBR |
Unspecified Bit Rate Variable Bit Rate |
UBR |
Undefined Bit Rate; Unspecified Bit Rate |
UC |
User Channel |
UCA |
Unswitched Channel Access |
UCBE |
Uncorrectable Block Error |
UCD |
Upstream Channel Descriptor |
UD |
Unconditional Disconnect |
UDLR |
Unidirectional Link Routing |
UDP |
User Datagram Protocol |
UDR |
Unconditional Disconnect Response |
UEQ |
Unequipped |
UFEC |
Ultra Forward Error Correction |
UGC |
Universal Gateway Carrier |
UGS |
Unsolicited Grant Service |
UHD |
Ultra High Density |
UHF |
Ultra High Frequency |
UI |
User Interface |
UID |
User Identifier |
UITS |
Unacknowledged Information Transfer Service |
UL |
Underwriters Laboratories |
ULH |
Ultra Long Haul |
ULSDCC |
Upper Layer Section Data Communications Channel |
UNEs |
Unbundled Network Elements |
UNEQ |
Unequipped Path; Unequipped |
UNEQ-P |
Unequipped Path |
UNEQ-V |
Unequipped VT |
UNI/UNIF |
User Network Interface |
UNII |
Unlicensed National Information Infrastructure |
UOG |
Universal OSS Gateway |
UPC |
Ultra Physical Contact; Universal Packet Carrier; Usage Parameter Control |
UPnP |
Universal Plug and Play |
UPS |
Uninterrupted Power Supply |
UPSR |
Unidirectional Path Switched Ring |
URI |
Universal Resource Identifier |
URL |
Universal Resource Locator |
US |
Upstream |
USA |
Universal Shelf Amplifier |
USB |
Universal Serial Bus |
USEPA |
United States Environmental Protection Agency |
UTC |
Universal Time Coordinated; Universal Transport Carrier |
UTOPIA |
Universal Test and Operations Physical Interface for ATM |
UTP |
Unprotected Termination Point; Unshielded Twisted Pair |
UV |
Ultraviolet |
UVC |
Universal Voice Carrier; Universal Video Carrier |
V |
|
V |
Voltage |
V/A |
Video/Audio |
VAC |
Volts Alternating Current |
VAD |
Voice Activity Detection |
VAP |
Virtual Access Partitioning |
VBI |
Vertical Blanking Interval |
VBR |
Variable Bit Rate |
VC |
Virtual Circuit; Virtual Channel; Virtual Container; Virtual Concatenation |
VC-N |
Virtual Container Level N (N=11, 12, 2, 3, 4) |
VC-N-Xc |
Contiguous Concatenation of X Virtual Containers at Level N |
VC-N-Xv |
Virtual Concatenation of X Virtual containers at Level N |
VCAT |
Virtual Concatenation |
VCC |
Virtual Channel Connection |
VCG |
Virtual Concatenation Group |
VCI |
Virtual Channel Identifier |
VCL |
Virtual Channel Link |
VCM |
Virtual Concatenation-group Member |
VCO |
Voltage Controlled Oscillator |
VCR |
Video Cassette Recorder |
VCSEL |
Vertical Cavity Surface-Emitting Laser |
VCXO |
Voltage Controlled Crystal Oscillator |
VDC |
Volts Direct Current |
VDSL |
Very-high-bit-rate Digital Subscriber Line |
VF |
Virtual Fiber; Virtual Facility |
VFTP |
Virtual Facility Termination Point |
VG |
Virtual Group |
VGA |
Variable Gain Amplifier |
VHF |
Very High Frequency |
VLAN |
Virtual Local Area Network |
VLR |
Very Long Reach |
VLSR |
Virtual Line Switched Ring |
VM |
Voice Mail; Virtual Memory |
VOA |
Variable Optical Attenuator |
VOD |
Video on Demand |
VoIP |
Voice over Internet Protocol |
VOM |
Volt-Ohm Meter |
VOQ |
Virtual Output Queuing |
VOW |
Voice Order Wire |
VP |
Virtual Path |
VPC |
Virtual Path Connection |
VPCI |
Virtual Path Connection Identifier |
VPG |
Virtual Path Group |
VPI |
Virtual Path Identifier |
VPI/VCI |
Combined, VPI and VCI identify a connection on an ATM Network |
VPL |
Virtual Path Link |
VPLS |
Virtual Private LAN Service |
VPN |
Virtual Private Network |
VPSP |
Virtual Path Switch Protection |
VRRP |
Virtual Router Redundancy Protocol |
VSA |
Virtual-Scheduling Algorithm; Vector Signal Analyzer |
VSAT |
Very Small Aperture Terminal |
VSI |
Vendor-Specific Information |
VSR |
Very Short Reach |
VT |
Virtual Tributary |
VTG |
Virtual Tributary Group |
VT-100 |
Terminal Emulation System |
V-UNI |
Virtual User Network Interface |
W |
|
W |
Watt; Working |
WAD |
Wavelength Add and Drop |
WAN |
Wide Area Network |
WB |
Working Band; Westbound |
WCA |
Working Channel Access |
WCI |
Wavelength Converter Interface |
WCI RT |
Wavelength Converter Interface Rate Tunable |
WCIRT-e |
Wavelength Converter Interface Rate Tunable (ONLINE Edge Platform) |
WCSS |
WDM Capable Switching System |
WDM |
Wavelength Division Multiplexing |
WDT |
Watchdog timer |
W-DCS |
Wideband Digital Cross-Connect System |
WECA |
Wireless Ethernet Compatibility Alliance |
WEP |
Wired Equivalency Privacy |
WFA |
Workforce Automation |
WFM |
Workforce Management |
WFQ |
Weighted Fair Queuing |
WIF |
Wide Area Network Interface |
WiFi |
Wireless Fidelity |
WiMedia |
An alliance for Wireless Multimedia |
WLAN |
Wireless Local Area Network |
WM9 |
Windows Media Player Version 9 |
WPA |
Wireless (WiFi) Protected Access |
WPS |
Working/Protect Splitter |
WSS |
Wavelength Selective Switch |
WRED |
Weighted Random Early Discard; Weighted Random Early Detection |
WTR |
Wait to Restore |
WWN |
World Wide Name |
X |
|
X.25 |
Packet Switched Communications Interface |
XC |
Cross Connect |
XCVR |
Transceiver |
XDSL |
See DSL (Digital Subscriber Line) |
XFP |
10 Gb/s small form-factor pluggable transceiver |
XML |
Extensible Markup Language |
XMTR |
Transmitter |
XPM |
Cross-Phase Modulation |
Z |
|
ZAC |
Zero Administration Client |
ZWP |
Zero Water Peak |