Publisher Acknowledgement: This is the first edition of this book. Please notify us of any acronyms we may
have missed by submitting them via the form at www.ciena.com/acronymsguide. We will be happy to include them in further editions of the guide. For additional
information on Ciena’s Carrier Ethernet or Optical Communications Certification programs please contact
[email protected].
Table of Contents Numerics..................................................................1
M................................................................................15
A....................................................................................1
N.................................................................................17
B....................................................................................2
O.................................................................................18
C....................................................................................3
P..................................................................................20
D....................................................................................5
Q.................................................................................22
E....................................................................................7
R.................................................................................22
F.....................................................................................9
S.................................................................................24
G.................................................................................10
T..................................................................................27
H.................................................................................11
U.................................................................................28
I...................................................................................12
V.................................................................................29
J.................................................................................14
W................................................................................30
K.................................................................................14
X.................................................................................30
L.................................................................................14
Z.................................................................................31
Acronym Guide
ADI
Asset Distribution Interface
2F
ADP
Actual Departure Potential; Automatic Data Processing
Numerics 10 GbE
10 GFC 100G
16-QAM 3D 3G
40G 4C 4F
5C
A
ADM
Two-Fiber
10 Gigabit Ethernet
10 Gigabit Fibre Channel (Same as FC1200)
ADSL
16 (points) Quadrature Amplitude Modulation
AE
ADT
100 Gigabits
AES
Three Dimensional 3rd Generation
AESA
40 Gigabits
Consortium of Intel, IBM, Matsushita, and Toshiba
AFI
AFM
Four-Fiber
AGC
Consortium of Intel, Sony, Matsushita, Toshiba, and Hitachi
AGGR AID
A/D
Analog-to-Digital
AAL0
ATM Adaptation Layer Type 0
AIN
ATM Adaptation Layer 2 Transport
AINS
AAL
AAL1 AAL2
ATM Adaptation Layer
ATM Adaptation Layer Type 1
AAL3/4
ATM Adaptation Layer Type 3 and 4
ABR
Available Bit Rate
AAL5 ABT AC
AC-3
ACAC ACEG
AIM
ATM Adaptation Layer 5
ACK Acknowledge ACL
AM
ACR
Allowed Cell Rate
AMF
Association Control Service Element
AMP
ACS ACSE
ACSS ACT
ADC
AMI
Automatic Channel Shutdown; Alarm Correlation and Suppression
AMS
Automatic Channel Shutdown Suppression; Automatic Channel Shutdown State
ANSI AO
Active
AOD
Analog-to-Digital Converter; Add/Drop Coupler
APC
1
Aggregate
Access Identifier; Application Identifier
Auto Image Management; Active Inventory Map Advanced Intelligent Network Automatic in Service State Alarm Indication Signal
Alarm Indication Signal Decay Period
Alarm Indication Signal Integration Period Alarm Indication Signal - Line
VT Alarm Indication Signal
Alarm Cutoff Acquire
APS Mode Mismatch Failure
Automatic Gain Control; Access Group Controller
AIS-V
ACO
ACQ
Authority and Format Identifier
Alarm Indication Signal - Path
ALS
Active Control List; Access Control List
ATM End System Address; ATM End Station Address
AIS-P
AIS-S
Alternating Current Equipment Ground
Advanced Encryption Standard; Application Environment Specific
Additive Increase Rate
AIS-L
Actual Call Admission Control
Automation Engine; Automation Environment
AIR
AISIP
Audio Coding Revision 3
Actual Departure Time; Automatic Data Transmission
ATM Inter-Network Interface
AISDP
Alternating Current; Administrative Complex; Atomic Clock
Asymmetric Digital Subscriber Line
AINI
AIS
Advanced BiCMOS Technology
Add/Drop Multiplexer
Alarm Indication Signal - Section
Automatic Laser Shutdown; Application Layer Service Amplitude Modulation; Application Manager APS Mode Mismatch Failure
Access Method Interface; Alternate Mark Inversion Amplifier; Amperes
Asset Management System; Agent Management System
American National Standards Institute Autonomous Output
Advertising on Demand
Angled Physical Contact
APD API
APS
APSBF APSCM APSMM
Avalanche PhotoDiode
AU-n
Automatic Protection Switching
AVC
Application Program Interface
Automatic Protection Switching Byte Failure
Auxiliary
AWG
American Wire Gauge
AWGN
Automatic Protection Switching Channel Mismatch
B
Automatic Protection Switching Mode Mismatch
Administrative Unit n
AUX
B/P
Attribute Value Change
Additive White Gaussian Noise
Backplane
Alarm Reporting Control
B3ZS
Bipolar With 3-Zero Substitution
ARPU
Average Revenue per Unit (or User)
B8ZS
Bipolar With 8-Zero Substitution
ASAP
Alarm Severity Assignment Profile
BB
Broadband
BBER
Background Block Error Ratio
ARC ARP AS
ASCII ASD ASE ASI ASIC
ASN.1 ASP
ASYNC AT
AT&T ATA
ATAF
ATAG
Address Resolution Protocol
B6ZS
Autonomous System
BA
American Standard Code for Information Interchange
BBE
BBE-RS
Access Security Device
Amplified Spontaneous Emission; Application Service Element Asynchronous Serial Interface; Asynchronous SCSI Interface
BC
Abstract Syntax Notation One
B-DCS
BCD
BCST
Application-Specific Integrated Circuit
Applications Service Provider; Average Selling Price
BDFB
Asynchronous
Bipolar With 6-Zero Substitution Booster Amplifier
Background Block Error
Background Block Error Regenerator Section (an SDH regenerator section error) Business Continuity; Broadcast
Binary-Coded Decimal
Broadcast
Broadband Digital Cross-connect System
Battery Distribution Fuse Bay; Battery Distribution Fuse Board
Advanced Technology
BE
Advanced Technology Attachment
BELLCORE BELL Communications Research, Inc.
Autonomous Tag
BE-RS
Alarm Traffic Controller
BER-SF-P Path Signal Failure BER
American Telephone and Telegraph Company
BECN
ATM Test Access Function
BER
Block Error; Best Effort
Backward Explicit Congestion Notification Bit Error Rate
Block Errors-Regenerative Section
ATAGSEQ Autonomous Tag Sequence
BER-SD-P Path Signal Degrade BER
ATDMA
BERT
Bit Error Rate Test
BGP
Border Gateway Protocol
BICI
Broadband Inter-Carrier Interfaces; B-ISDN Inter-carrier Interface
ATC
A-TDMA ATM
Asynchronous Time Division Multiple Access
BFP
Advanced Time Division Multiple Access
BGP4
Asynchronous Transfer Mode
ATM SAM ATM Service Access Multiplexer ATMVCL
ATM Virtual Channel Link
BICSI
ATTN
Attenuator
BIOS
ATMVPL AU/AU-x AUG AUI
ATM Virtual Path Link
BIP
Administrative Unit
Administrative Unit Group
B-ISDN
Autonomous Unit Interface
2
Back Facet Power; Basic Format Packet Border Gateway Protocol, version 4
Building Industry Consulting Services International Basic Input/Output System
Bit Interleaved Parity; Breaker Interface Panel Broadband ISDN
BIT
Built-In Test; Binary Digit
CA
Bits per Symbol
CAC
BITS
Building Integrated Timing System
BLSR
Bidirectional Line Switched Ring
bits/sym BML BNC
BOC
BOD BOL
BOM
CAB
CAD
Business Management Layer
CALA
Bayonet Neill-Concelman British National Connector
CAM
Bell Operating Company
BP
Bill of Materials
Capital Expenditure
CATV
Community Antenna Television; Cable Television
CAS
Bootstrap Protocol
Broadband Passive Optical Network
CBDS
Baseline Privacy Interface Plus
CBN CBR
Backplane Protocol
bps
bits per second
BPT
Band Pass-Through
BPV
CB, C/B
Backplane
B-PON
BPSR
CC
Bidirectional Path Switched Ring
CCAF CCB
BiPolar Violations
CCC
B-RAS
Broadband Remote Access Server
BRM
Backward RM
CCCG
Board Support Package
CCDF
BRI
BSC BSP
BSS BT
Board SC Connector
Build Transfer Operate
BW
BWDM BYT
C C
C/I
C/N
C2O
CCI
British Telecom; Burst Tolerance
BTO
BTU/hr
CCC-PC
Business Support System Beginning Tag
BTS
CCC768
Basic Rate Interface
Btag BTM
Content Addressable Memory
CAPEX
CAP
Beginning of Life
Baseline Privacy Interface
BPP
Computer Aided Design
Central America and Latin America
Bandwidth on Demand
BPI
BPI+
Connection Admission Control; Call Admission Control
CANARIE Canadian Network for Advancement of Research
BONDING Bandwidth ON Demand Interoperability Group BOOTP
Content Archived; Carrier Access
Conformity Assessment Body
CCITT
Bits Termination Circuit Pack
CCK
CCW
Business Telecom Services
CDE
British Thermal Unit per hour Bandwidth
Total Byte Count
Carrier-to-Interface Ratio
Constant Bit Rate
Cross Connection; Clear Channel; Calling Centers
Call Control Agent Function, IN block Configuration Control Board Cross Connect Controller
Cross Connect Fabric with 768x768 STS-1 capacity
Cross Connection and Control Group
CCC Processor Card
Complementary Cumulative Distribution Function Content Control Information
Consultative Committee on International Telegraphy and Telephony Complimentary Code Keying Counterclockwise
Common Desktop Environment (UNIX)
Contracted Deadline Potential
Compact Disc Read Only Memory Connection Dropping Threshold
CDTS
Chromatic Dispersion Test Set
CDVT
Cell Delay Variation Tolerance
CD-WO
3
Common Bonding Network
Call Detail Recording; Clock and Data Recovery
CDV
Cable to Optic
Connectionless Broadband Data Service
CDR CDT
Carrier-to-Noise Ratio
Circuit Breaker
Code Division Multiple Access
CD-ROM Celsius; Critical
Channel Associated Signaling
CDMA CDP
Band Wavelength Division Multiplexer
Competitive Access Provider
Cell Delay Variation
Compact Disc - Write One
CE
Consumer Electronics
CEA
Consumer Electronics Association
CER
Cell Error Ratio; Codeword Error Ration
CELP CES
CEV
CFDM CFG
CFM CFU CH
CME CMF
Code Excited Linear Predictive
CMIP
Circuit Emulation Service
CMIS
Controlled Environmental Vault
Command Frequency Division Multiplexer
CMISE
Configuration
CMR
Cubic Feet per Minute
CMS
Cooling Fan Unit Channel
CHASEH
Environmentally Hardened Chassis
CI
Compact Intelligence; Craft Interface; Customer Interface; Certified Integrator
CID CIF
CIFS CIM
CINOT CIT CL
CLASS CLEC CLEI
CLEITM CLFI CLI
CLIP
Common Internet File System
CNMP
CNIR
Client Interface Module
CNR CO
COAX
COBRA
Coaxial Cable
Copper and Optical Broadband Remote Access Coder/Decoder
Collision Count
Central Office Equipment
Central Office Layout Design
CONDTYPE Condition Type
Common Language Facility Identifier Command Line Interface
CONS
Connection Oriented Network Service
COPS
Common Open Policy Services
COO
Calling Line Identification Presentation
CoS
Connectionless Transport Protocol
COTS
CORBA
Common Language Location Identifier Connectionless Network Service
COT
Cell Loss Ratio
CP
cm centimeter CM-CLI
Carrier-to-Noise Ratio
Central Office
COLL
COLD
Common Language Equipment Identifier
Cell Loss Priority
CM
Customer Network Management Portal
Common Language Equipment Identifier
COS
CLTP
Carrier-to-Noise/Ingress Ratio
Change of Frame Alignment
Competitive Local Exchange Carrier
Connectionless Network Layer Protocol
CLR
Core Network Integrated Planning System
COFA
COE
CLNP CLP
Clock Multiplier Unit
CODEC
Calling Line Identification Restriction
CLNS
Call Management Server
Custom Local Area Signalling Services
CLIR CLLI
Cell Misinsertion Rate
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
Client Interface
Coupling Loss; Cleared
Common Management Information Service Element
C-n
CNIPS
Craft Interface Terminal; Craft Interface Tool
Common Management Information Services
Cable Modem Termination System
Circuit Identification; Craft Interface Device
Ciena Optical Transport System
Common Management Information Protocol
CMTS CMU
CHASYNC Chassis with Sync
Compressed Multiplication Equipment
Channel Mismatch Failure; Client Management Frame
Control Module; Cable Modem
Control Module Command Line Interface
CPCI
4
Chief Operating Officer
Common Object Request Broker Architecture
Class of Service; Common Object Services; CORBA Object Services Class of Service
Central Office Terminal
Commercial off the Shelf
Circuit Pack; Control Processor; Connection Provisioner; Call Processing; Customer Premise
Compact Peripheral Component Interconnect
CPD CPE
C-Plane CPLD CPM
CPRM CPT
Common Path Distortion
CRS CRT
CRx Line CS
CSA
CSC
CSD
CSES Csh
CSH
CTx Line CUG
Content Protection for Recordable Media
CV
Channel Pass-Through
Circuit Reliability; Carriage Return; Critical Alarm
CR-LDP
CTS
Cross-Phase Modulation
CR
CRG
CTP
Complex Programmable Logic Device
Connection Termination Point Tag
CRC
CTN
Control Plane
CPTTAG CPU
CTG
Customer Premises Equipment; Customer Provided Equipment
Connection Termination Point
Clear To Send
Client Transmit Line Closed User Group Code Violation
CV-FE
Code violation - Far End
CV-P
Code Violation - Path
CV-L
Central Processing Unit
Cradle-To-Grave
Core Transmission Network
Code Violation - Line
CV-PFE
Code Violation - Path Far End
CW
Clockwise; Continuous Wave
CV-S,CVS Code Violation - Section; Code Violation -- Seconds
Cyclic Redundancy Check Circuit Restoration Group
Constraint-based Routing Label Distribution Protocol
D
Cathode Ray Tube
D/A
Control Sub-span; Convergence Sublayer; CoreStream
DAC
D&C
Drop and Continue
Client Receive Line
D/I
Drop and Insert
Canadian Standards Association
DACS
Cross Connect
Command Signal and Control
DAD
Core Switching Division
DADM
Consecutive Severely Errored Seconds
DARPA
C Shell
Common Signal Header
DAS
Digital-to-Analog
Digital to Analog Converter; Digital Addressable Controller
Digital Access and Cross-Connect System Direct Access Device
Data Add/Drop Multiplexer
Defense Advanced Research Projects Agency (US) Direct Attached Storage
CSI
Convergence Sublayer Indicator
C-SMF
Conventional Single Mode Fiber
dB decibel
CSP
Customer Service Profile
DB-9
Data Bus 9 Pin Connector
dBc
Decibel referenced to the carrier
CSM CSO CSR
Core Switching Manager
Composite Second Order
Carrier-Suppressed Return-to-Zero
CSU
Channel Service Unit; Customer Service Unit
CSV CT
CTAM CTB
CTC
CTD
DB
Customer Service Representative
CS-RZ CST
DATE
DBA
Central Standard Time
dBm
DBMS
DBPSK
Comma-Separated Value
DBS
Critical
dBW
Cable & Telecommunications Association for Marketing
DC
DCC
Composite Triple Beat
DCE
Common Transmit Clock
Cell Transfer Delay
DCF
5
Duly Authorised Telecommunications Entity Database
Database Administrator
Decibel reference to milliwatts
Database Management System
Differential Binary Phase Shift Keying Direct Broadcast Satellite
Decibels referenced to Watts
Direct Current; Data Connection
Data Communications Channel
Data Communications Equipment; Data Circuit Terminating Equipment Dispersion-Compensating Fiber
DCG
Dispersion Compensation Grating
DMACS
DCME
Digital Compressed Multiplication Equipment
DMB
Data Communication Network
DMH
DCM
DCMS DCN
DCOM DCP
DCS
Dispersion Compensation Module
Digital Circuit Multiplication System
DMC
Distributed Component Object Model
DMM
Digital Communications Protocol; Device Control Protocol
DCU
Dial up Data Channel Unit
DDS
Digital Data Storage; Digital Data Service; Digital Data System; Digital Data Stream
DDI
DE
DEC
DECT DEG
DEMUX DENI
DENY DFB DG
DGD
[Optical] Demultiplexer
DNR
Do Not Revert
DOCSIS DOD DOS
Discard Eligible
DoS
Digital Electrical Carrier
Dispersion-managed Solution
Digital Network Control System
Domain Name Server; Domain Name System Data-Over-Cable Service Interface Specifications Department of Defense Disk Operating System Denial of Service
DP
Distribution Point; Data Processing
Degraded Signal
DPFI
Data Plane Fault Isolation
Digital Entertainment Networking Initiative
DPR
DPRAM
Dedicated Protection Ring
Dual Port Random Access Memory
Distributed Feedback
DQ
Degraded Quality Level
Digital European Cordless Telephone/ Telecommunication
DPDT DPI
Demultiplexer
DPT
Transaction Denier
DQDB
Disc Group
DQoS
Differential Group Delay
DQPSK
DHCP
Dynamic Host Configuration Protocol
DID
Direct Inward Dialer
DR
Digital Input/Output
DRM
DHWG
Degraded Modem Hours
Digital Multi-Meter
DMUX
DNS
Direct Dialing Inward
Dual Modem Cards
Detailed Method of Procedure
DNCS
DCS 1800 Digital Cellular System, GSM variant at 1800 MHz
Digital Multipoint Bridge; Document Maintenance Bulletin
DMOP DMS
Digital Cross-connect System; Digital Connection System
Distributed Monitoring and Control System
Digital Home Working Group
Double-Pole, Double-Throw
Digital Program Insertion; Dots Per Inch
Dynamic Packet Transport
Distributed Queue Dual Bus
Direct Memory Access
Differential Quadrature Phase Shift Keying Disaster Recovery
Differentiated Services
DRAM
Dynamic Random Access Memory
Dual In-line Package (switch)
DS
Digital Signal; Downstream
Div
Division
DS1
Digital Service, Level 1, 1.544 Mb/s; Digital Signal Level
DLCI
Data Link Connection Identifier
DiffServ DIO DIP
DS0
DIR Direction DLC DLL DLT DM
DMA
Digital Loop Carrier
DS3
DSCP
Dynamic Link Library; Data Lind Layer (driver); Downline Load Degraded Minute; Dispersion Mitigation
6
Digital Signal Level 3 (T3 equivalent) Differentiated Service Code Point
Discard Count
DSI
Digital Speech Interpolation
DSL
Direct Memory Access
Digital Service, Level 0, 64kbps
DSCRDS DSF
Digital Linear Tape Drives
Digital Rights Management
Dispersion Shifted Fiber
Digital Subscriber Line; Digital Subscriber Loop
DSLAM DS-n DSP
Digital Subscriber Line Access Multiplexer
E1
Digital Signal Processor
E2PROM
Digital Signal, level n
DSS
Direct Satellite Services
DSTB
Digital Set-top Box
DSS2 DSX
DS-x DSX-1 DSX-3 DT
DTCP DTE
DTH DTL
DV
DVB-ASI DVC
DVD
ECLR ECn
Dual Universal Asynchronous Receiver Transmitter
ECN
ECO
Data User Part
ECTRA
Don’t Use Synchronization Digital Video
ED
Digital Video Broadcast Asynchronous Serial Interface Digital Versatile Disc
End To End
Electrically Erasable Programmable Read Only Memory European data signal at a rate of 34.368 Mb/s
Enterprise Application Integration Events, Alarms, and Logging
Extensible Authentication Protocol Emergency Alert System Error Block; Eastbound
Energy per Bit to Noise ratio
Enhanced Capacity ; European Commission Electrical Carrier Level 1 (STS1 Equivalent) Edge Card Control; Embedded Communications Channel Equipment Catalog Item Egress Cell Loss Ratio
Electrical Carrier, level n; 0=64 kb/s, 2=6,312 Mb/s, 3=44,736 Mb/s Engineering Change Notice
Engineering Change Order
European Committee for Telecommunications Regulatory Affairs Equipment Degrade
EDF
Erbium-Doped Fiber
EDI
Electronic Data Interchange
EDFA
Dynamic Virtual Concatenation
Erbium-Doped Fiber Amplifier
eDOCSIS Embedded Data-Over-Cable Service Interface Specifications
Rewritable Digital Versatile Disc
EEE
EEPROM
Digital Voltmeter
Electronic Equipment Enclosure
Electrically Erasable Programmable Read Only Memory
Digital Voice Orderwire
EF
Datawire
EFCI
Explicit Forward Congestion Indication
EFP
Equipment Fault Protection
Dense Wavelength Division Multiplexing
E&M
ECI
Dynamic Transport System
DWDM
E
ECC
Designated Transit List
Digital Video Recorder
DXI
EC-1
Direct-to-Home, usually satellite television broadcasting
DVR
DXC
EC
Data Terminal Equipment
Display Visual Interface
DW
Eb/No
Digital Transmission Content Protection
DVI
DVOW
EB
Decision Technology; Direct Termination
Recordable Digital Versatile Disc
DVM
EAS
Digital Signal Level 3 Cross Connect
DVD+R
DVD+RW
EAP
Digital Signal Level 1 Cross Connect
Digital Television
DUS
EAL
Digital Signal where N denotes multiple of 51.84 Mb/s
DTV
DUP
EAI
Digital Side Interface
Dual Tone Multiple Frequency
DUART
E3
Digital Subscriber Signaling 2
DTMF DTS
E2E
European Equivalent of T1 (2.048 Mb/s signal speed)
EF&I EFD
Digital Cross-Connect
EH
Data Exchange Interface
EIA EID
Ear & Mouth
EIDE
7
Equipment Failure
Engineer, Furnish and Install
Event Forwarding Discriminator Environmentally Hardened
Electronic Industries Alliance; Electronic Industries Association Equipment Identifier
Enhanced Integrated Drive Electronics
EII
European Information Infrastructure
ER
EIRP
Effective Isotropic Radiated Power; Equivalent Isotropic Radiated Power
EREI-P
Enhanced Path Remote Error Indication
ES
Errored Second
EIR
EJB
ELAN ELR EM
EMBS EMC
EMD
Excess Information Rate
Emulated Local Area Network Element Manager
ESCBND
ElectroMagnetic Compatibility
ESCR
Egress Maximum Burst Size
Electromagnetic Interference
EMS
Element Management System
ES-L
EO
Embedded Multimedia Terminal Adapter
Equipment Order
Embedded Operations Channel
EOF
End of Frame
EOM
End of Message
EOL EoS
EOW EPA
EPCR
Egress Peak Cell Rate
EPG
Equipment Protection Group
EPD EPL
EPLD
E-PON EPR
EPROM EQPT
ETH
ETHBND ETLMI ETR
ETSI
Erasable Programmable Logic Device
Ethernet Passive Optical Network
EU
Erasable Programmable Read Only Memory
EVM
Engineering Progress Report Equipment
8
End System Identifier
Errored Seconds - Line
Electronic Service Method of Procedure Extended Subnetwork
Errored Seconds - Path
Errored Second Regenerator Section
Etag
Ethernet Private Line
Errored Seconds - Far End
ES-RS
ET
Early Packet Discard
Extended Super Frame; Extended Superframe Format
Errored Seconds - Path Far End
ESx
Environmental Protection Agency
Electrostatic Discharge
Electrostatic Discharge Sensitive
ES-PFE
ES-V
Engineered Orderwire; Express Orderwire
Egress Sustainable Cell Rate
Errored Seconds at the Mulitplexor Section
EST
Ethernet over SONET/SDH
Enterprise Systems Connection
ES-MS
ES-S
End of Life
ESCON Bundle
Errored Second-Line Far End
ESR
Everything on Demand
EDFA Saturation Algorithm; End System Address
ES-LFE
ES-P
Enhanced Non-preemptable Unprotected Traffic
Error Code
End System to Intermediate System
ESN
End Network Element
Extended Reach
Enhanced Remote Defect Indicator
ES-IS
ESMOP
Extended Management Domain
EOC EoD
ESI
Expiring Maintenance Process
ESCON MUX
ENUT
ESF
ES-FE
EMX ENE
ESDS
Element Management Layer; Electro-Absorptive Modulated Laser
Expiring Maintenance Tool
END
ESD
Extended Management Gateway
EMT
eMTA
ESCON
Extended Management Domain
EMI
EMP
ESA
Extra Long Reach
Europe, Middle East and Africa
EML
Errcde
Enterprise Java Beans
EMEA EMG
ERDI
Errored Second Ratio
Errored Seconds - Section Eastern Standard Time
Errored Second-Virtual Tributary (VT) Path; Errored Second-VT Path Far End Errored Second Count
End Terminal Ending Tag
10/100 Ethernet
Ethernet Bundle
ESCON Trib Laser Manager Interface External Timing Reference
European Telecommunications Standards Institute European Union
EVC
Ethernet Virtual Circuit
EVPL
Ethernet Virtual Private Line
Error Vector Magnitude
EVPLAN EWO
EXER-R
EXER-S EXP EXZ
F F
F&I
Ethernet Virtual Private Local Area Network
FDM
Exercise - Ring
FDMA
Experimental
FDRP
Engineering Work Order
Exercise - Span (SONET)
FEAC Fahrenheit
FAD
Functional Access Domain
FAT FC
FC10000 FC200 FC400
FCAPS FCC
FC-FE FCIP
FC-L
FC-LFE FCM
Fibre Channel 1 Gb/s
FEP
Fibre Channel 2 Gb/s
FEPLF
Fault, Configuration, Accounting, Performance (or Provisioning), Security management
FERF
Far End Receive Failure
FF
Fast Forward
FEDS
Fibre Channel 10 Gb/s (same as 10GFC)
FET
Federal Communications Commission
FFA
Failure Count - Far End
FFP
Fibre Channel over Internet Protocol Failure Count - Line Far End Fan Control Module
FDDI
Fiber Distributed Data Interface
FDL
Facilities Data Link
First Field Application
Facility Fault Protection Forwarding Information Base
Failure in Time
FMA
FMECA FMS
9
Field-Effect Transistor
FIT
FM
Fiber Distributing Frame
Far End Performance Monitor
Fiber Connection
FLAG
Frequency Division Duplexed
Far End Protection Line Failure
FICON
FITR
Failure Count - VT
Front End Processor; Far End Protection
Frame Identification Code
FITL
Count of FCS-32 Error
FICON Extended Storage over Distance
FIC
FITB
Frame Check Sequence; Fibre Channel Standard
Forward Error Correction Seconds
Fast Fourier Transform
FIL
Failure Count - Path
Forward Explicit Congestion Notification
FFT FIB
Failure Count - Line
Failure Count - VT Far End
FDF
FEPM
Fibre Channel 4 Gb/s
FC-VFE FDD
Forward Error Correction; Forwarding Equivalence Class
FECS
Failure Count - Path Far End
FC-V
Far End Block Error
Failure Code; Failure Count; Fiber Channel; Fibre Channel
FC-PFE FCS32
Fast Ethernet Bridging
Far-End Alarm
FECN
Factory Acceptance Test
Fibre Channel Protocol
FCS
Far End Alarm Channel
Facility Failure
FCP
FC-P
Far End; Fast Ethernet; Forward Error Correction
FEB
FEC
FC Switch Fibre Channel Switch FC100
Fiber Distribution Panel
Frame Drop
Far-End Terminal Alarm Condition
FEBE
Field Alert Bulletin
Frequency Division Multiple Access
FEACT
FEALM
Furnish and Install
Fuse Alarm; Fault Alarm
FAF
FE
Excessive Zone
FA, F/A FAB
FDP
Frequency Division Multiplexing; Fast Ethernet ; Frequency Division Modulation
Fiber in the Loop
Fiber in the Building Fiber in the Loop
Fiber in the Riser
Fiber Link Around the Globe
Fan Module; Fault Management; Forwarding Module; Frequency Modulation Failure Modes Analysis
Failure Mode and Effects and Criticality Analyses Fault Management System
FNCS
Foreign National Control System
FSO
FOADM
Fixed Optical Add/Drop Multiplexer; Flexible Optical Add/Drop Multiplexer
FS-R
FO
FOB
Fiber Optics
Free On Board
FOC
Final Operating Configuration
FOS
Follow on Satellite, Intelsat designation
FOTS
Fiber Optic Transmission System
FOD FOSC FOW FP
FPG
FPGA
FPLMTS FPM FPP
FPS FR
Free on Demand
Fiber Optic Splice Course Forward OrderWire
Fabry-Perot (type of laser); Frame Pulse (NEC) Facility Protection Group
Field Programmable Gate Array
Future Public Land Mobile Telecommunications Systems Fan Power Module
FRF.13 FRF.5 FRF.8.1 FRG
FRM FRMS FRS
FRU FS
FSA
FSAN FSB
FT
Force
Frequency
Frame Relay Forum
Frame Relay Forum Implementation Agreement 12 Frame Relay Forum Implementation Agreement 13 Frame Relay Forum Implementation Agreement 5
Frame Relay Forum Implementation Agreement 8.1 Fragment Count
Forward Resource Management; Frame Count Dropped Frames
Free Space Optical
Forced Switch - Protection Forced Switch - Ring
Fixed Satellite Service
Forced Switch - Span
Forced Switch - Working France Telecom
FT1
Fractional T1
FTA
Fault Tree Analysis
FTC
Fabric and Timing Card
GT
FTAM
Gain Transfer; Grating Temperature
File Transfer and Access Management
FTM
Fabric Timing Module
FTTB
Fiber to the Building; Fiber to the Business
FTP
FTTC
FTTP
Functional Requirements Document; Feature Requirements Definition
FRF.12
FS-W
Frame Relay
FRD FRF
FS-S
FTTD
Frames per Second
Frame Relay Access Device
FREQ
FSS
Fast Pattern Processor
FRAD FRC
FS-P
File Transfer Protocol
Fibre to the Curb (Kerb), linked to VDSL in deployment Fiber to the Desk
FTTH
Fiber to the Home
FTTx
Fiber to the [endpoint]
FUNI FW
FWHM FWM FXO FXS
G
G/T GA
Fiber to the Premise; Maintenance Channel Transparent Termination Point Frame-based User-Network Interface Firmware; Firewall
Full Width at Half Maximum Four-Wave Mixing
Foreign Exchange Office
Foreign Exchange Service
Gain to System Noise Temperature Ratio General Availability
Gb
Gigabit
GbE
Gigabit Ethernet
GB
Gigabyte
Frame Relay Service
GbE VFTP Gigabit Ethernet Virtual Facility Termination Point
File System
GbE WIF
Field Replacement Unit Field Service Application
Full Services Access Network (consortium) Field Service Bulletin
GbE WAN Gigabit Ethernet Wide Area Network GBIC Gbit
Gigabit Ethernet Wide Area Network Interface Gigabit Interface Converter
Gigabit
Gbps, Gbits Gigabits per second
10
Gbytes/s
Gigabytes per second
GRTES
Generic Connection Admission Control
GSM
GC
Gateway Controller
GCC0
General Communications Channel 0 (similar to SDH/SONET DCC)
GCAC GCIT GCM
GCRA
GDMO GE GEB
GEO
GESS GET GFA
GFC GFF
GFP GFR GHz
GigE GII
GMDSS GMPLS GMT GN
GSO
Graphical Craft Interface Terminal
GT
General Control Module
GTF
Generic Cell Rate Algorithm
Guidelines for the Definition of Managed Objects
Geostationary Earth Orbit
GOS GP
GPI
HD
Guaranteed Frame Rate
HDCP
HDB3
High Definition
High Density Bipolar 3
High-bandwidth Digital Content Protection
Global Maritime Distress and Safety System
HD-SDI
High Definition Serial Digital Interface
HDSL
High-speed Digital Subscriber Line
HDMI
Global Information Infrastructure
HDSF
Generalized Multi-Protocol Label Switching
HDT
Greenwich Mean Time; Grasshoppers Made for Telecommunications (GMT fuses)
Header Error Control; Headend Controller
HFC
Gateway Platform
HFM
General Purpose Input
HGW HHP
General Purpose Output
HI
Global Positioning System; Global Positioning Satellite
HISSA
Generic Requirement; Geographic Redundancy
HMS
Gigabit Rate Data Multiplexer
HNv1
11
Host Digital Terminal
HEC HEPA
Grade of Service
High-speed Distributed Switch Fabric
High Definition Television
HEM
Gateway Network Element
High-speed/level Data Link Control
High Definition Multimedia Interface
HDTV HE
Gateway Network Element
Gigabit Passive Optical Network
GRDM
High Availability
High-speed Central Switch Fabric Interface
HDLC
G-PON GR
Gateway
Gigabit Ethernet
General Purpose Input
GPS
Gateway Controller
Gain Flattening Filter (used in EDFA)
GPIN GPO
GWC
HCSFI
GND Ground GNE
Graphical User Interface
HA
Gigahertz (Billion hertz)
Group Termination Point
GUI
Gain Flattened Amplifier
Generic Framing Procedure
Global Traffic Forecast (Intelsat)
General TeleSystems Group
H
Generic Flow Control
Gain Transfer; Grating Temperature
GTS
General Electric Satellite Services Gigabit Ethernet Tunneling
Geostationary Earth Orbit
Global Traffic Meeting (Intelsat)
GW
Gigabit Ethernet Bridge
Global System for Mobile communications, originally: Groupe Spéciale Mobile
GTM GTP
Gigabit Ethernet; Greater than or equal to ; General Electric Corporation
General Requirements for Transmission Equipment Specification
Headend
Headend Modem
High Efficiency Particulate Arrester
Hybrid Fiber Coax
High-speed Forwarding Module Home Gateway
Households Passed
Hardware/Software Interface; Hardware-Software Integration; High Speed Internet
High Speed Serial Application Specific Integrated Circuit (ASIC) Hybrid Management Sub-layer
Home Networking Version 1
HO
Higher Order
ICB
Independent Customer Builds
HO-DSP
High Order-Domain Specific Part
ICLR
Ingress Cell Loss Ratio
HOM
High-Order Modulation
ICNV
Input- Command Not Valid
HOD
HO-DXC
HBO on Demand
Higher Order Digital Cross Connect
HomePNA Home Phoneline Networking Alliance HOP
High Order Path
HO-POH
Higher Order - Path Overhead
HP
Hairpin; Higher Order Path; Homes Passed
HOVC HPA HPF
Higher Order Virtual Concatenation
High Power Amplifier
High Pass Filter
ICD
ICMP ICP
International Code Designator Internet Control Message Protocol IMA Control Protocol
ICPT
Installed Circuit Pack Type
ID
Identifier; Identification
ICR
IDB IDE IDF
Initial Cell Rate
International Development Bank Integrated Device Electronics
Intermediate Distribution Frame; Invalid Data Flag
HPNA
Home Phoneline Networking Alliance
IDH
Identification High byte
HPPI
High Performance Parallel Interface
IDL
Interactive Distance Learning; Interface Definition Language
HPOV HP-UX HRD HS
HSB
HSD
Hewlett Packard Open View
Hewlett Packard’s UNIX-based OS that runs on HP’s enterprise servers
Hardware Release Document; Hardware Requirements Document High Speed
High Speed Bus
High Speed Data
HSSI
High Speed Serial Interface
HTML
Hyper Text Markup Language
HT
HTTP
HVAC HVS HW Hz
I
I/B I/O
IAD IAS IBCC IBS IBT IC
High Threshold
Hypertext Transfer Protocol
Heating, Ventilation, and Air-Conditioning
Hospitality Voice Services
Hardware Hertz
Inbound/Outroute (also known as the return link), from remote terminal to hub
Input/Output
IDI
IDNV IDP
IDR
IDS
IE
Information Element
IEC IEEE IETF IF
IFC
Incoming Error Count; InterExchange Carrier
Institute for Electrical and Electronics Engineers
Internet Engineering Task Force
Intermediate Frequency
Initial First Cost
Information Group
IIAC
Input - Invalid Access Identifier
IISP
Interim Interface Signaling Protocol
IGMP IIOP ILA
ILMI
International Business Traveller
Indoor Unit
IG
In-Band Communication Channel
Integrated Circuit
Intermediate Data Rate
Intrusion Detection System
Inter-DXC Trunk
IDU
ILEC
Intelsat Business Service
Input, Data Not Valid
Initial Domain Part
IDT
Integrated Access Device; Interface Access Device Internet Access Service; Internet Authentication Service
Initial Domain Identifier
ILM
ILOG
12
Internet Group Multicast Protocol
CORBA Internet Inter-ORB Protocol
Intermediate Light Amplification; Integrated Line Amplifier; In-Line Amplifier
Incumbent Local Exchange Carrier
Integrated Laser Module; Integrated Laser Modulator
Interim Link Management Interface; Interim Local Management Interface
Information Log; Incoming Log
ILR
Issues List Report
IR
IMA
Inverse Multiplexing over ATM
IRT
IMD
Intermodulation Distortion
IM
IMBS
Instant Messaging
Ingress Maximum Burst Size
Intermediate Reach
IRD
Integrated Receiver/Decoder
IS
In Service; Intermediate System
ISA
Industry Standard Architecture
IME
Interface Management Entity
IN
Intelligent Network
IS-ANRST In Service - Abnormal and Restricted
I-NET
Institutional Network
ISCR
Inroute
see I/B
IMT INAP INM INT
INTAP INTP
IntServ INVW IOA
IOC IOF
IOR IP IPC
Inter Machine Trunk
Internal; Internal Clock
IPOA IPPV IPR
IPsec IPSL IPTA
IPTV IPX
ISDN IS-IS
Internodal Tunneling Protocol
ISM
Integrated Services
IS-NR
Invalid Word Count
ISO
Input/Output Adapter
Initial Operating Configuration
Inter-office Fiber
Intelligent Peripheral, IN block; Internet Protocol
In Service - Abnormal
InterSwitch Communications Channel
Ingress Sustainable Cell Rate
Internet Small Computer System Interface; SCSI Protocol over TCP/IP Idle Signal Detection
Integrated Services Digital Network
Intermediate System to Intermediate System
Industrial Scientific Medical
In Service - Normal
International Standards Organization
ISOC
the Internet Society
IS-RST
In Service - Restricted
ISP
Interoperable Object Reference ;Indian Ocean Region
ISTP
Internet Service Provider; Inside Plant Internet Signaling Transport Protocol
Inter-process Communications; InterProcess or InterProcesser Control
ISV IT
Information Technology
DAMA IP Channel Unit
ITC
Independent Transmit Clock
Inter-Packet Gap
IPMS
ISD
Interoperability Technology Association for information Processing
IPG
IPMI
iSCSI
Integrated Network Manager
Ingress Peak Cell Rate
IPM
ISCC
Intelligent Network Application Part Protocol
IPCR
IPCU
IS-ANR
Integrated Receiver/Transcoder
ITA
ITE ITL
Interested Party Multicast
ITS
Internet Protocol Multicasting Initiative
Interested Party Multicast Service
ITT
Internet Protocol over ATM
ITU
Impulse Pay per View
ITU-T
Intellectual Property Rights
Internet Protocol Security
IUC
Integrated IP Software License Internet Protocol Transport Agreement
Internet Package Exchange
13
Installation, Test, and Acceptance
Information Technology Equipment
International Telecommunications Union
Intelligent Transportation System; Institute for Telecommunications Sciences
International Telephone and Telegraph
International Telecommunication Union
ITU Telecommunications standards body Interval Usage Code
IVPN
International VPN
IXC
Inter-exchange Carrier
IWF
IP Television
Independent Software Vendor
Interworking Function
J
J0
J2EE JBR
JDBC JDK
JDMK
J Zero
Java 2 Enterprise Edition Jabber Count
Java Database Connectivity Java Development Kit
Java Dynamic Management Kit
JDS-HR
Japan Digital Services - Half Rate
JMS
JAVA™ Messaging System
JEM
JNDI
JPEG JRE
JTAG JVM
K k
K1 K2
JAVA™ Element Manager
Java Naming and Directory Interface Joint Photographic Experts Group Java Runtime Environment
Joint Test Action Group Java Virtual Machine
kilo (thousand)
SONET or SDH overhead byte of MSP/ MS-SPRing (see K2)
Used with K1-SONET or SDH overhead byte for MSP/MS-SPRing
Kb Kilobit KB
Kb/s
KB/s
Kilobyte
Kilobits per second
Kilobytes per second
LAC
Local Access Concentrator
LAN
Local Area Network
LAP
Link Access Procedure; Link Access Protocol
LADM LANE LAPB
LAPD LAPF LAPS
LASER LATA
LC
Lucent Connector; Line Card
kilohertz (thousand hertz)
Ksh
ksym/s
Korn Shell
Kilosymbols per Second
ksym/sec Kilosymbols per Second kVA kW
L
1000 Volt Amperes Kilowatt
Local Craft Access Panel
LCC
Life-Cycle cost; Link Control Channel
LCAS
Layer 2 Tunneling Protocol
LA
Line Adapter; Latin America
L3
Layer 3
Link Capacity Adjustment Scheme
LCD
Liquid Crystal Display
LCN
Local Computer Network; Logical Channel Number; Local Communications Network
LCL
Lower Confidence Limit
Least Cost Routing
LCT
Large Capacity Terminal
LDAP
Lightweight Directory Access Protocol
Laser Diode
LDCC
Line Data Communications Channel
LDP
Label Distribution Protocol
LDCELP LDS
Low Delay CELP
Local Digital Switch
LEAF
Large Effective Area Fiber
LECS
LAN Emulation Configuration Server
LEC
LED
L2TP
Line Build Out
LCAP
LD
Km Kilometer
Laser Bias Current
Normalized Laser Bias Current
LBO
Kilofeet (USA cable length measurement)
kHz
Local Access and Transport Area
LBCN
LCR
kft
Link Access Procedure
Light Amplification by Stimulated Emission of Radiation
Laser Bias Current Level
Kilobytes per second kilo Bits Per Second
Link Access Procedure for Frame-Mode Bearer Services
LBCL
LBC
KBps
kBPS
Link Access Procedure Balanced
Link Access Procedure-D Channel (X 25)
Local ATM
Kilobits per second
Kilobits per second
Local Area Network Emulation
LATM
Kbit/s Kbps
Linear Add/Drop Multiplexer
LEO
Local Exchange Carrier
Light Emitting Diode Low Earth Orbit
LER
Label Edge Router
LF
Line Fail
LES
14
LAN Emulation Server
LFE
Line Far End
LRDC
LGX
Light-Guide Crossconnects
LSB
LGN LH
LIC
Logical Group Node Logical Host
Line Interface Card
LIF
Line Interface
LIP
Local Information Packet
LIM LIU
LLC
Lower-Layer Section DCC
LMDS
Local Multipoint Distribution Service
LMI
LMP
LO
Low Order
LOADM LOC
Locn
LO-DXC
LOPI
M12
LOP-V
VT Loss of Pointer
LOSS
LOVC LOW LP
Lport LP-S
MAU Mb
MB
Local Orderwire
Line Processor; Lockout of Protection; Low Order Path Lockout of Protection - Span
LR
Long Reach (fiber); Line Regeneration Equipment
Low Water Peak
MUX DS-1 into DS2 MUX DS-2 into DS3
Media Access Control; Medium Access Control Metropolitan Area Network
Main Audio Program; Mobile Application Part Protocol Media Access Unit Megabit
Megabyte
Mbaud
Megabaud
Megabytes per second
Mbits/s
Megabits per second
Mb/s
Megabytes per second
Mb/s
15
Line Unit
Megabits per second
Mb/s
LP-S/SF-P Lockout of Protection - Span/Signal Fail - Protection
Loop Testing System; Long Term Storage
Mb/s
MB/s
Logical port
Link Termination Point; Logical Termination Point
MUX DS-1 into DS3
MAP
Low-Order VC
Local Transport Network (fiber ring)
M13
MAN
Loss of Signal Seconds
Line Terminating Equipment; Long Terminal Evolution
Monitor and Control
MAC
Loss of Signal
Low Threshold; Laser Temperature
M&C
M23
Loss of Pointer - Path
LATA Switching System Generic Requirements
Lempel Ziv Stac
Loss of Multiframe; List of Materials Loss of Pointer Decay Period
Label Switch Router
LZS
M
Loss of Pointer Inhibit
Logical Subnetwork
Label Switched Path; Local Service Provider
Low-Voltage Distribution
LWP
Loss of Pointer
Lower Specification Limit
LVD
Path Loss of Frame
Loss of Pointer Integration Period
LOS
LU
Low Order Digital Cross Connect
LOPIP
LOP-P
LTS
Location
Line Overhead
LOPDP
LTP
Loss of Clock
LOH LOP
LTN
Lightweight Optical Add/Drop Multiplexer
Loss of Frame
LOM
LTE
Low Noise Block
LOF
LOF-P
LT
Link Management Protocol
Low Noise Amplifier
LNB
LSSGR
Local Management Interface
LNA
Loss of Sync Message
LSR
Line Module
Least Significant Bit
LSM LSP
Logical Link Control
Low Speed ADM
Loss of Signal or Frame indication signal
LSN
Line Interface Unit
Long Reach Daughter Card
LSF LSL
Line Interface Module
LLSDCC LM
LSA
Megabits per second
Million Bits Per Second
MBS
Maximum Burst Size
MO
Management Control Processor
MODEM
MCC
Master Control Center / Computer
MCPC
Multiple Channels Per Carrier
MCP
MCR
MCS MCT
MCTF MDF
MDU
mDVR ME
Minimum Cell Rate; Minimum Cost Routing Master Control Station
Maintenance Channel Transparency
Motion Compensated Temporal Filtering Main Distribution Frame Multiple Dwelling Unit
Multi-TV Digital Video Recorder Middle East
Module; Movies on Demand
Modem
Modulator/Demodulator
MOF
MOP
MOR
MOS MP
MP3
Medium Earth Orbit
MPLS
Multilink Frame Relay
MGC
Media Gateway Controller
MGN
Management Gateway Node
MIB
Management Information Base
MG
MGCP MHz MID
MIPS MIT
Media Gateway
Management Information Tree
ML
Mediation Layer
MLPPP
Major
Multiplexer/Demultiplexer
Multi-Link Point-to-Point Protocol
mm millimeter MM
MPOA
MPT
of Telecommunications Traffic
MLMD
MPN
Megahertz (million hertz)
Millions of Instructions per Second
Multimode; Multimedia
Management Portal
MPEG-2 Layer 3
Moving Pictures Expert Group
Management Plane
Multi-Protocol Lambda Switching Multi Protocol Label Switching
MPLS-CP MPLS Control Plane
MPS
MiTTs MJ
MPLmS
Media Gateway Control Protocol
Message Identifier
Mean Opinion Score
Multi-Path Interface; Multi-Path Interference
MEO MFR
Method of Procedure
Multi-wavelength Optical Repeater
MPI
M-Plane
Modulation Error Ratio
Managed Object Framework
Multicast Packet Count
MPEG
Mismatch of Equipment and Attributes
MER
Modulator-Demodulator
MPCKTS
MEA
MEGACO Media Gateway Control Protocol
Managed Object
MOD
MPT
MPTS MR
MRRB
Mode Partition Noise
Multi Protocol over Asynchronous Transfer Mode Multiple Priority System
Multiplex Pass-Through
Ministry of Posts and Telecommunications
Multiple Program Transport Stream
Modification Request; Material Request; Medium Reach
Maintenance Requirements Review Board; Material Release Review Board
ms Milliseconds MS
MSA
MS-AIS MSB
Multiplex Section
Mediation Services Administrator
Multiplex Section - Alarm Indication Signal Most Significant Bit
MMCS
Meridian Multi Media Center Switch
MMF
Multi-Mode Fiber
MSF
Main Material Order
MSNM
Metro Switching Network Manager
MSO
Multiple System Operator
MME MML
MMO
Multiwave Management Element Man Machine Language
MMP
Multiwave Management Element
MNO
Mobile Network Operator
MN Minor MNC
Multi-National Company
MSC
Metro Shelf Controller; Microsoft Cluster Server Multiservice Switching Forum
MSN Multi-Subnetwork
MSNM ML Metro Switching Network Manager Mediation Layer MSOH
16
Multiplexer Section Overhead
MSP MS-P
MSPP
MSPVC MS-R
MS-RDI MS-REI MSS
Multiplex Section Protection; Multiservice Switching Path
NASA
Multiservice Provisioning Platform
NBI
Manual Switch - Protection
NAT
Management Soft Permanent Virtual Circuit
NBK NC
Manual Switch - Ring
Multiplex Section - Remote Defect Indication
NCB
NCC
Multiplex Section Remote Error Indication
NCCC NCCI
Mobile Satellite Service
MS-S
Manual Switch - Span
MST
Mountain Standard Time; Multiplex Section Termination
NCP
MS-Spring/MSPR Multiplex Section Shared Protection Ring MSTE MS-W MTA
MTBF MTIE MTP
MTTP MTTR
MTTU MTU
MUX
NAD NAP
NAPT NAS
NCTA
Multimedia Terminal Adapter
NDC NDF
Maximum Time Interval Error
NDIS
Message Transfer Part
NDMH
Transparent Connection Termination Point
NDP
Mean Time to Repair
NDSF
Mean Time to Understand
Maximum Transmission Unit
Mach-Zehnder
Network Capacity Planning and Delivery Non-Conformance Report
Network Computing System; Network Control System; Network Call Signaling Network Control Terminal
National Cable & Telecommunications Association National Destination Code New Data Flag
Network Design and Inventory System Non-Degraded Modem Hours
Network Discovery Protocol; Neighbor Discovery Protocol Non-Dispersion Shifted Fiber Network Element
Network Equipment Building Standards; Network Equipment Building Systems National Electric Code
Network Element Identification
NGDLC NG-L1 NGNA
17
Nodal Control Point; Nodal Control Processor
NEID
NFS
Network Access Server; Network Attached Storage
Network Control Coordination Channel
Network Call Correlation Identification
Network Element Function
NEMA
Network Access Point
National Computer Board
Network Control Center/Computer
NEF
NEIR
Network Address and Protocol |Translation
Nodal Controller; Normally Closed (contacts)
Near End/Far End
NEG
Network Access Domain
No Backup
NE/FE
NEC
No Alarm; Not Alarmed; Not Applicable; Not Available; Numerical Aperture
Northbound Interface
Network Digital Video Recording
NEBS
Millivolt
Network Address Translation
NDVR NE
Multiplexer
Miniature Variable Optical Attenuator
NA
NCT
Mean Time between Failure
MVOA
N
NCS
Manual Switch - Working
Muxceiver
MZ
NCR
Multiplex Section Terminating Equipment
MUXCVR mV
NCP&D
National Aeronautical and Space Agency (US)
Negative Terminal
Network Element Information Request
National Electrical Manufacturers Association Networked File System
Next Generation Digital Loop Carrier
Next Generation Layer 1
Next Generation Network Architecture
NGSO NGW NI
Non-Geostationary Earth Orbit, used as a general descriptive for LEO and MEO systems. National Gateway
Network Interface
NIC
Network Interface Card
NIDU
Network Interface Data Unit
NID NII
NIS
NISC NIU
NLA NLC
NLD
National Science Foundation (US)
NSN
Nationally Significant Number
NSI
NSP
NTF
No Trouble Found
NTFS
New Technology File System
NTS
Near Term Storage; Network Time Synchronization
Network Infrastructure Solutions
National Information Services Council
Network Interface Unit
Network Layer Address; Network Layer Agent Node Line Card
NTE
NTP
NTSC NUT
nanometer
NVRAM
NVM
NZDSF
Network Monitoring and Analysis
O
NMF
Node-level Management Function
OA
NMS
Network Management System
NN
NNI NNIF
NNM
NNTP NO
NOC
Network Management Ethernet Network Management Layer
N key on keyboard for a no response
Network to Network Interface; Network Node Interface Network to Network Interface
NPR
Noise Power Ratio
NRT
Non-Real Time
NPC NR
NRTL
NRTVBR NRZ ns
NSA
Network Parameter Control
No Reply
Nationally Recognized Test Laboratory
Non Real-Time Variable Bit Rate
Non-Volatile Memory
Nonvolatile Random Access Memory Non-Zero Dispersion Shifted Fiber
Operations Administration and Management
OADM OAM
OAMCell
O-BLSR
Network Operations Control Center
Non-preemptive Unprotected Traffic
OA&M
Network Object; Normally Open (contacts)
NOCC
National Television Standards Committee
Operations and Management
OAMP
Network Operations Center
Network Time Protocol
O&M
Network Node Manager
Network News Transfer Protocol
Window New Technology
Network Terminating Equipment
NTFCNCDE Notification Codes (TL1)
Neighbor Link Discovery
Network Management; Network Manager; Network Management; Node Manager
NML
Node Switch Provider; Node Switch Processor
National Information Infrastructure (for the USA, see also GII and EII)
NM
NME
Network Side Interface
NT
Network Layer Protocol Identifier
NMA
Network Service Access Point
NSF
Network Interface Device
NLPI nm
NSAP
OC
OC-1 OC1
OC-12 OC-192 OC-3
Non-Return to Zero Nanosecond
Non Service Affecting
18
Optical Amplifier
Optical Add/Drop Multiplexer
Operations, Administration and Maintenance Operations, Administration and Maintenance Cell Operation, Administration, Maintenance and Provisioning
Optical-Bidirectional Line Switched Ring Optical Carrier
Optical Carrier level 1, SONET bit rate = 51.84 Mb/s Optical Carrier level 1 (51.84 Mb/s)
Optical Carrier level 12, SONET bit rate = 622.08 Mb/s
Optical Carrier level 192, SONET bit rate = 9.953 Gb/s Optical Carrier level 3, SONET bit rate = 155.52 Mb/s
OC-48
Optical Carrier level 48, SONET bit rate = 2.488 Gb/s
OMG
Optical Channel
ONE
Optical Network Element
ONT
Optical Network Terminal
Octet Count
OO
Optical-to-Optical
Oven-Controlled Crystal Oscillator
OOF
Out of Frame
Object Database Management System
OOM1
Out of Multi Frame Stage 1
ODPR
Optically Dedicated Protection Ring
OOO
ODUk
Optical channel Data Unit where k is 1 or 2
OOS
OCAP OCH OCI
OC-n OCT
OMT
OpenCable Application Platform
ON
Open Connection Indication
ONP
Optical Carrier-number; Optical Carrier where N denotes a multiple of 51.84 Mb/s
ONU
Object Management Group
Orthogonal Mode Transducer Optical Network
Open Network Provision
Optical Network Unit
OCTU
Optical Channel Transport Unit
OOB
ODA
Outlet Digital Adapter
OOK
Optical Distribution Frame
OOM2
Outdoor Unit
OOR
Out of Range
OOS-MA
Out of Service-Management
OpEx
Operations Expenditure
OCXO ODBMS ODF
ODU
OEM OEO
OEPL
OEPLAN OEVPL
OFDM OFS
OFTEL OID OIU
OLA OLB
OLM
OLMP OLS OLT
OLTP OM
OMC
On-Off Keying
Out of Multi Frame Stage 2 Optical - Optical - Optical Out of Service
OOS-MAANR Out of Service-Management and Abnormal
Original Equipment Manufacturer Optical-to-Electronic-to-Optical Optical Ethernet Private Line
Optical Ethernet Private Local Area Network
OPM
Optical Ethernet Virtual Private Line
OPR
OEVPLAN Optical Ethernet Virtual Private Local Area Network OFC
Out of Band
OPS/INE
Open Fiber Control; Optical Fiber Communication
OPT
Orthogonal Frequency Division Multiplexing
OPTORL
Office of Telecommunications (UK Regulator)
OQPSK
OpUk
Out of Frame Second
ORB
Oribital Slot
Object Identifier
Operator Interface Unit; Optical Interface Unit; Office Interface Unit Optical Line Amplifier; Optical Link Analysis
ORIG
Optical Link Module
OS
ORL
ORP
Optical Link Budget
OSA
Optical Link Management Protocol
OSC
Optical Line System
Optical Line Termination; Optical Line Terminal
OSDS OSGI
OSRP Link Termination Point
OSHA
Optical Module
OSI
Operation and Maintenance Center
19
Optical Performance Monitoring; Optical Power Meter Optical Power Received
Operations Provisioning System/ Intelligent Network Element Optical Power Transmit
Optical Return Loss
Optical channel payload Unit where k is 1 or 2 Offset Quaternary Phase-shift Keying Object Request Broker
Longitude position above the equator at which a satellite is located Original; Originating
Optical Return Loss
Optical Routing Protocol Operating System
Optical Spectrum Analyzer
Optical Supervisory Channel; Optical Service Channel Operations Systems Data Server Open Services Gateway Initiative
Occupational Safety and Health Act Open Systems Interconnection
OSM
OSMINE OSNR OSP
OSC Splitter Module
Operations Systems Modifications for the Integration of Network Elements Optical Signal-to-Noise Ratio; Open Signal-to-Noise Ratio
Optical Signaling Protocol; Outside Plant
OSPF
Open Shortest Path First
OSRP
Optical Signaling and Routing Protocols
OSPR OSS
OSSAN OSS-AU
Optically Shared Protection Ring Operations Support System
Operations Support System Access Nodes Out of Service-Autonomous
OSS-AUMA Out of Service-Autonomous and Management
OSS-AURST Out of Service-Autonomous and Restricted OSWF OTC
OTDR OTGR OTN OTS
On-site Work Force
Operations Technical Center; Optical Transport Card Optical Time Domain Reflectometer
Operations Technology Generic Requirements Optical Transport Network Optical Transport System
OTS RPTR OTS Repeater OTU OUI
OUNI
O-UPSR OUSM OUSP
Optical Transport Unit
Organizationally Unique Identifier
Optical User Network Interface
Optical-Unidirectional Path Switched Ring Optical Utility Services Manager Optical Utility Services Platform
Outbound see O/B Outroute
see O/B
OXC
Optical Cross Connect
OW
P
Order Wire
P2P
Peer to Peer
PA
Port Adapter; Pre-Amplifier
P6
PA
PABX
Pentium 6
Power Amplifier
Private Automatic Branch Exchange
20
PAD
Power Attenuation Device
PAMA
Permanent Assignment Multiple Access
PARP
Proxy ARP
PAN PAS PAT
PAX PB
PBOR
PPB-TE PBT PBX PC PC
PCA PCB
PCC
Program Association Table
PCP
PCR
PCS
PDA
Private Branch Exchange
Pacific Century Group
PING
Pulse Code Modulation
PJ
PL
PLC
Program Change Notice; Product Change Notice ;Personal Communications Network
Personal Communication System
PDH
Plesiochronous Digital Hierarchy
Pleisiochronous Digital Hierarchy
PDI
Payload Defect Indication
PDP
Policy Decision Point
Packet Internet Groper Plug-In Provisioning
Pointer Justification Packet Loss
Packet Loss Concealment
Physical Layer Convergence Protocol
Philippines Long Distance Telephone Company Phase Locked Loop
PLO
Path Layer Overhead
PMD
Payload Label Mismatch - Path
PNNI Logical Node
Performance Management; Performance Monitoring; Program Manager; Project Manager Power Management Algorithm
Performance Monitoring Building Block
Polarization Mode Dispersion
PMDC
PMD Compensator
PMO
Program Management Office
PMM
21
Photo Intrinsic; Positive-Intrinsic Negative; Personal Identification Number
Payload Label Mismatch - VT
PMBB
Power Distribution Unit; Protocol Data Unit
Packet Interface FPGA
PLM-V
PMA
Polarization Dependent Loss
Personally Identifiable Data; Protocol Identifier; Packet Identifier; Personal Identification
Payload Label Mismatch
PM
Passive Dispersion Compensator
Programmable Interrupt Controller
PLM
PLN
Personal Digital Assistant
Peer Group Leader
Programmable Logic Device
PLM-P
Peak Cell Rate
Peer Group; Protection Group
PLD PLL
Primary Cross-connection Point, street cabinet/flexibility point
Premium Feature Open
Pilot Line Change Notification
PLDT
Product Code
Path Far End
Packet Forwarding Module
PLCN PLCP
Pre-Conditioned Order
Portable Document Format
PDU
PIP
PacketCable Multimedia
PDF
PDL
PIN
Processor Communication Channel
Perceptual Evaluation of Speech Quality
Physical Layer Device; Physical
PIF
Printed Circuit Board
Policy Enforcement Point
PHY PID
Protection Channel Access
Processor Enhancement Module; Processor Element Module
Peer Group Identifier
PIC
Personal Computer
Public, Education, Government
PGID PGL
Personal Computer; Physical Contact; Processor Card
Power Distribution and Alarm Panel
PDH
PG
Provider Backbone Transport
PDAP PDC
PFO
Provider Backbone Bridging Traffic Engineering
Personal Computer Memory Card Interface Adaptor
P-Code
PFM
Petabyte
PCMCIA
PCO
PFE
Primary-Backup Object Replication
Peripheral Component Interconnect
PCN
PESQ
Path Adaptation and X-Connect
PCI
PCMM
PEP
PanAmSat
Pacific Century Corporate Access
PCM
PEM
Personal Area Networking
PCCA PCG
PEG
Power Management Module
PN
PNC
PNNI PO
POC
POH
POM PON
POP/PoP POR
POS
POST POTS PPC
PPD
PPJC PPL
PPM Pport PPP
PPS PPT
PRB
PRBS PRC PRI
Pseudo Noise; physical node
PSM
Private Network-to-Network Interface; Private Network Node Interface
P-SNC
Physical Node Controller Purchase Order
Point Of Contact Path Overhead
Project Office Manager
Passive Optical Network
Point of Presence, usually referring to an Internet service provider/access point Power on Reset
Packet over SONET; Positive Terminal
Power on Self Test
Plain Old Telephone Service Power PC
Partial Packet Discard
Positive Pointer Justification Count Point-to-Point Link
Parts per Minute; Parts per Million; Pulses per Million Physical port
Point-to-Point Protocol
Path Protection Switched; Pulses per Second Power Passing Tap
Project Review Board
Pseudo Random Bit Sequence Primary Reference Clock
Primary Rate Interface
PRNG
Pseudo Random Number Generators
PROT
Protocol; Protection
PROM PRS PS
Programmable Read Only Memory Primary Reference Source
Power Supply; Policy Server
ps/nm-km Pico-second PSA
PacketCable Service Agreement
PSC
Protection Switching Count; Project Steering Committee
PSBF PSD
Protection Switching Byte Failure Protection Switching Duration
PSEL
Presentation Suite
PSL
Path Signal Label
PSI
Program Specific Information
PSN
PSQM PSR PST
PSTN PSU PT
PTE
Persistent Stored Module
Packet Switch Node; Packet Switched Network Permanent SNC
Perceptual Speech Quality Measurement
Protection Side Regeneration; Path Switched Ring
Primary State; Pacific Standard Time
Public Switched Telephone Network
Power Supply Unit; Packet Switch Unit Pass-Through; Payload Type
Path Terminating Equipment
PTI
Payload Type Indicator
PTP
Physical Termination Point; Point-To-Point; Path Termination Point
PTO PTS
PTSE
PTSP PTT PV
PVC PVR
PWB
PWM
Private Telecommunications Operator Per Trunk Signaling
PNNI Topology State Element
PNNI Topology State Packet
Posts, Telegraph and Telephone company (usually a government monopoly operator) Protocol Violation
Permanent Virtual Circuit; Poly Vinyl Chloride; Private Virtual Circuit Personal Video Recorder Printed Wire Board
Pulse Width Modulation
PWR Power
Q
Q3 QAM QL
QMC QoS
QPM
Telecommunications Management Network (TMN) Interface Quadrature Amplitude Modulation Quality Level
QUICC Multichannel Controller Quality of Service
Quarterly Progress Meeting
QPR
Quarterly Progress Report
QUICC
Quad Integrated Communications Controller
QPSK
R
R&D R.H.
22
Quadrature Phase Shift Keying
Research and Development; Research and Design Relative Humidity
R/W
RADIUS RAI
RAID RAIG
RAITN RAM RAN
Read/Write
RHC
Remote Authentication Dial-In User Service
RIB
Remote Alarm Indication
RIN
Relative Intensity Noise
RJ
Registered Jack
RIP
Redundant Array of Inexpensive Disk; Redundant Array of Independent Disk
RJ-11
Resource Availability Information Group
RKS
Regional Arab Information Technology Network
RMA
Random Access Memory
RMAN
Regional Area Network; Radio Access Network
RMI
RASCOM Regional African Satellite Communications Organisation
RMS
RBM
ROADM
RBF
Reconfigurable Blocking Filter
RBOC
Regional Bell Operating Company
RBW
Routing Control Channel
RCVR
Receiver
RDI
Remote Defect Indication
RDF
RDI-L
RDI-P RED REF
ROC
Resolution Bandwidth
RCC RCV
RNR
Regional Business Manager
ROI
Receiver
Recovery Manager
Remote Method Invocation Root Mean Square
Not Ready to Receive; Remote Failure Indication Re-configurable Optical Add/Drop Multiplexer Regional Operations Center Return on Investment
Revolutions per Minute
RR
Ready to Receive; Reverse Request
RRO
Random Early Detection; Random Early Discard
Return Material Authorization; Replace Material Authorization
RPM
RRB
Remote Defect Indication - Path
Registered Jack –11
Record Keeping Server
Read Only Memory
RPR
Remote Defect Indication - Line
Routing Information Protocol
ROM
ROW
Rate Decrease Factor
Regional Holding Company
Routing Information Base
RR-R
Reference
RR-S
Remote Error Indication - Line
RS232
Revision
RSOH
Request for Comment
RSTP
Radio Frequency Interference; Remote Failure Indication; Request for Information
RSVP
Return OrderWire
Resilient Packet Ring
Reliability Review Board Record Route Object
Reverse Request - Ring
Reverse Request - Span
REI
Remote Error Indication
RS
REI-P
Remote Error Indication - Path
RS-E
Ring Switch - East
Radio Frequency
RSP
Route Switch Processor
Request For Final Proposals
RST
REI-L Rev. RF
RFC
RFFP RFI
RFI-L RFI-P RFP RFT RG
RSVP-TE R/W
Remote Failure Indication (detected at the line-layer)
RS-W
Remote Failure Indication (detected at the path-layer)
RT
RTC
Request for Proposal
Radio Frequency Transmitter used to describe large antennas with associated receive/transmit equipment
23
Regenerator Section Overhead
Resilient Spanning Tree Protocol Regenerator Section Terminating Resource Reservation Protocol
Resource Reservation Protocol with Traffic Engineering Read/Write
Ring Switch - West
Remote Terminal; Real Time Real-Time Clock
RTI
Real-Time Ingest
RTO
Recovery Time Objective
RTN
Residential Gateway
Regenerator Section; Reed-Solomon
Recommended Standard –232
Return (voltage return)
RTOS RTP
RTPS
RTRV RTS
RTSP RTT
RTU
RTVBR RU
Real-Time Operating System
Routing Table Protocol; Real-Time Transport Protocol; Routine Task Procedure
RX
SCC
Real Time Streaming Protocol Round-trip Time
Rack Unit
SCE
Real-Time Variable Bit Rate Traffic
Routing and Wavelength Assignment Receive
Return to Zero
s Second
Square Foot
S/IMP
Signal to Impulse Ratio
SA
Service-Affecting
SAAL
SABLIME SAN SAP
SAR
SARP SAS
Signal to Noise Ratio
Signaling ATM Adaptation Layer
Product Administration System (AT&T) Storage Area Network
Secondary Audio Program
Segmentation and Reassembly
Switching Address Resolution Protocol
Severely Errored Frame and AIS Seconds
SAAS
Software As A Service
SATA
Serial AT Attachment
SASE
SATCOM SATT SAW
Standalone Synchronization
Satellite Communications Satellite Capacity Synchronization, Alarms, and Telemetry Termination Surface Acoustic Wave
S-band
frequency band
SBS
Stimulated Brillouin Scattering
SBLK
SCCP S-CDMA
Return to Zero Differential Phase Shift Keying
S/N
SCCI
Right to Use
RZ-DPSK
s.f.
Service Channel; Square Connector; Shelf Controller
Ready to Send; Request to Send; Real Time Operation System
Receive Line
S
SC
SCADA
Retrieve
Rx Line RZ
Switched Broadcast Video
SBW
Real Time Streaming Protocol
RW Rewind RWA
SBV
Errored Superblocks
SCEP SCF
SCM SCN SCP
SCPC SCR
SCSI
SCTE SD SDA
SDCC SDF
SDH SDI
SDL SDLC
Signal Bandwidth
Supervisory Control and Data Acquisition
Serial Communications Controller; Serial Communications Channels Small Computer System Interface
Signalling Connection Control Part, part of SS7 Synchronous Code Division Multiple Access
Service Creation Environment, IN block
Service Creation Environment Point, IN block Service Control Function, IN block
Service Channel Modem; Sub-carrier Multiplexing
Service Channel Network; Shared Content Network Service Control Point, IN block
Single Channel per Carrier
Sustainable Cell Rate; Silicon Controlled Rectifier Small Computer System Interface
Society of Cable Telecommunications Engineers Signal Degrade; Signal Detect; Standard Definition System Design Authority
Section Data Communications Channel Service Data Function, IN block Synchronous Digital Hierarchy
Secure Digital Interface; Serial Digital Interface
Synchronous Data Link; Synchronous Delay Line Synchronous Data Link Control
SDMA
Space Domain Multiple Access
SDP
Service Data Point, IN block
SDMH SD-P
SD-R
SDRAM SD-S
24
Severely Degraded Modem Hours Signal Degrade - Path
Signal Degrade - Ring
Synchronized Dynamic Random Access Memory Signal Degrade-Span
SDTV SDU SE
SEAL SEC SEF
SEFS
SEFS-S SEM
SEMS
Standard Definition Television
SIF
Systems Engineer
SIM
Secondary
SITA
Service Data Unit
Simple and Efficient Adaptation Layer Severely Errored Framing
SESR
SES-RS SES-S SES-V
Severely Errored Seconds
Severely Errored Seconds Path Far End
SMCS
Severely Errored Seconds - VT Far End
SF
Signal Failure; Super Frame
SFD SFF
SMF
SF-R
Signal Failure - Ring
SMT
SHx
Shelf Number
SIB SIC SID
S-MTA
Serial Interface; Service Independent ; System Integrator
SN
SNA
Service Independent Building Block, IN block
SNC
System Integrity Control; Standard Industrial Classification
SNCP
SNCP/I
System Identification number; Source Identifier
25
Switched Multimegabit Data Service
Small and Medium Enterprise; Short Message Entity Single Mode Fiber
Service Management Point, IN block
Signaling Gateway Controller
SI
Short Message Service Center
SMP
SGC
Bourne Shell
Serial Management Controllers; Standard Management Committee
Switch Monitor
SMSC
sh
Small and Medium Business
SMON
SMS
Signaling Gateway
Service Management Access Point, IN block
Single Mode Long Reach
Signal Failure - Span
SG
Service Level Report
SMLR
SMOP
Small Form-factor Pluggable
Service Layer Manager
Single Mode Intermediate Reach
SMM
Small Form Factor (connector)
Serial Line Internet Protocol
SMIR SML
Start of Frame Delimiter
Sync Frequency Offset
SF-S
SME
Synchronous Equipment Timing Source
SFO SFP
SMDS
Severely Errored Seconds - VT
SES-VFE SETS
SMC
Severely Errored Seconds - Section
Service Level Agreement
Single Mode; Switching Module; Shelf Manager
SMB
Severely Errored Seconds Regenerator Section
Société Internationale de Télécommunications Aéronautique
SM
Severely Errored Seconds Line Far End
Severely Errored Second Ratio
Session Initiation Protocol
Synchronization Loss
SMAP
Severely Errored Seconds - Path
Service Interface Module
SLOSS SLR
Severely Errored Multi-frame Seconds
Severely Errored Seconds - Line
SES-PFE
SLM
Service Entitlement Manager
SES-L
SES-P
SLIP
Severely Errored Framing Seconds Section
Serializer/DeSerializer
SES-LFE
SLA
Severely Errored Frame Seconds
SerDes SES
SIP
SONET Interoperability Forum; Switch Interface FPGA
Service Management Layer
Service Mediation Module
Service Method of Procedure
Service Management System, IN block; Service Management Suite; Short Message Service Short Message Service Centre, part of GSM messaging system Surface Mount Technology; Self-Monitoring Task
Standalone Multimedia Terminal Adaptor Service Node, IN block
Systems Network Architecture
Subnetwork Connection; Subnetwork Controller Subnetwork Connection Protection
Subnetwork Connection Protection/ Inherent monitoring
SNCP/N SNG
SNM
Subnetwork Connection Protection/ Non-intrusive monitoring
SSB
Switching Network Manager
SSCS
Sequence Number Protection
SSF
Satellite News Gathering
SNMP
Simple Network Management Protocol
SNR
Signal-to-Noise Ratio
SNP
SSCOP SSEL
SNTP
Simple Network Time Protocol
SSL
SOF
Start of Frame
SSMF
SOA
SOH
SOHO
SONET SOP SP SPC
SPCN SPE SPF SPI
SPM
Semiconductor Optical Amplifier Section Overhead; State of Health
Small Office/Home Office
Synchronous Optical Network, US equivalent to SDH Standard Operating Procedure; Service Provider
Self-Phase Modulation
SPR/SPRing SPTP
SPVC SQL SR
Shared Protection Ring
Service Path Termination Point
Soft Permanent Virtual Connection; Soft Permanent Virtual Circuit Structured Query Language
Short Reach (fiber)
SRAM
Static Random Access Memory
SRD
Software Release Document
SST
SSTUR SSU ST1 ST2
STE
STII (2) STM
STM-0 STM-1
STM-4
SRS
Stimulated Raman Scattering
Synchronous Residual Time Stamp Service Affecting (TL1)
SS/TDMA Satellite Switched Time Division Multiple Access, Intelsat service SS5 SS7
Signaling System 5
Signalling System 7, supported by the ITU-T, also known as CCITT 7
Synchronization Supply Unit ; Subscriber Terminals
Straight Terminus; Straight Tip Stratum 1; Switched T1 Stratum 2 Stratum 3
Set-Top Box
STC
Specialised Resource Function, IN block
SRVEFF
Secondary Service State
Site-Specific Turn-Up Report
STB
ST4
SRF
SRTS
Solid State Power Amplifier
Stratum 3 Enhanced
STM-16
Software Release Notice
Standard Single Mode Fiber
ST3E
SRC/DST Source/Destination
SRN
Secure Sockets Layer
Service Switching Point, IN block
SSPA
ST3
Serial Peripheral Interface; Service Provider Interface
Server Signal Failure ; Service Switching Function
SSP
Satellite Personal Communications Network Synchronous Payload Envelope
Session Selector
Synchronization-Status Messages
ST
Shortest Path First
Service-Specific Convergence Sublayer
SSM
Shelf Processor; Shelf Pump; Service Provider SONET Permanent Circuit
Single Sideband
Service Specific Connection Oriented Protocol
STM-64 STM-n
STM-nC STMX STP
STS
STS-1
26
Stratum 4 (Asynchronous) Stacking and Timing Card
Section Terminating Equipment; Section Terminating Element Type of optical connector
Synchronous Transfer Mode, or Module
Synchronous Transfer Mode level 0, SDH bit rate = 51.84 Mb/s Synchronous Transfer Mode level 1, SDH bit rate = 155.52 Mb/s
Synchronous Transfer Mode level 16, SDH bit rate = 2488.32 Mb/s Synchronous Transfer Mode level 4, SDH bit rate = 622.08 Mb/s
Synchronous Transfer Mode level 64, SDH bit rate = 9953.28 Mb/s Synchronous Transport Module n
Synchronous Transport Module of level n concatenated SONET/SDH Thin Multiplexer
Spanning Tree Protocol; Shielded Twisted Pair Synchronous Transport Signal
Synchronous Transport Signal Level 1
STS-3
STS-3c STS-n
STS-Nc
Synchronous Transport Signal Level 3
Synchronous Transport Signal Level 3, concatenated
STU-P
To Be Determined
TBUS
Timing Bus
TBOS
Synchronous Transport Signal n
TC
Contiguous Concatenation of N STS-1 SPEs
TCA
STS-N-Xv Virtual Concatenation of X STS-N SPEs STU
TBD
Secure Telephone Unit; Synchronized, Traceability Unknown; Stratum Traceability Unknown
TCBE TCM
Stratum Traceability UnknownProvisioned
TCMO
SVCC
Switched Virtual Channel Connection
TCP/IP
SVP
Secure Video Processor
TCTP
Software
TD
Software Identifier
TDM
SVC
SVOD SVPC SW
SWCA SWID
SWOD SX
SYNC
SYNCIO
SYSLOG
T
T1 T1 T3
TAC TACACS TACS TADR
TCP
Switched Virtual Circuit
Subscription Video on Demand
Switched Virtual Path Connection
TDEV
Split Working Channel Access
TDMA
Software ODACS
TE
Short Reach as in 1000Base-SX
Synchronization
System Log
TAM TAP
TARP TAS TB
TID TIE
TIM TIM-S
27
Terminal Equipment
Traffic Engineering Database
Telephone Company
Telephone Equipment Order
Thin Film Transistor
Trivial File Transfer Protocol Timing Generator
Corrected Type Header Error Correction Code
TIA
Terabyte
Time Division Multiple Access
THEC TI
Telecommunications Authority of Singapore
Time Division Multiplexing
Trunking Gateway Control Protocol
Total Available Market
Target Identifier Address Resolution Protocol
Traffic Director
Time Deviation
TGCP
THz
Test Access Port; Technician Access Port
Transparent Connection Termination Point
Termination
Target Address
TADRMAP Target Address Map
Transmission Control Protocol/Internet Protocol
TERM
TGS
Total Access Communications Systems (Analogue)
Transmission Control Protocol; Trouble Cleaning Procedure
Talker Echo Loudness Rating
TG
Terminal Access Controller Access Control Systems
Transport Complex Managed Object
TELR
TFTP
Transport Aggregated Circuit; Technical Assistance Center
Trellis Coded Modulation; Transport Channel Members
Terminal Endpoint Identifier; Terminal Equipment Identifier
TFT
Digital Carrier System for DS3 Signals
Total Corrected Bit Error
TEI
TEO
1.544 Mb/s (US orientated)
Threshold Crossing Alert; Timing Control and Access
Thermo-Electric Cooler
Telco Service or line operation at the DS-1 rate
Transmission Convergence; Transport Complex; Transport Channel
TEC
TED
Synchronized Input/Output
Telemetry Byte Oriented Serial Protocol
Time Generation System TeraHertz (1012 hertz)
Terrestrial Interference
Telecommunications Industry Association Target Identification; Terminal Identification Time Interval Error
Trace Identifier Mismatch; Transmit Intermediate Multiplexer
Trace Identifier Mismatch - Section
TIRKS TISSA Hz
Trunk Integrated Record Keeping System Time Space Switch ApplicationSpecific Integrated Circuit Hertz
TKIP
Temporal Key Integrity Protocol
TL-1 CLI
Transaction Language One, Command Line Interface
TL-1 TLC TLI
TLS
Transaction Language 1
Transport Logical Connection
Transaction Language Command Line Interface
TSE
TSEL TSF
Transport Signal Failure
TSI
Time Slot Interchange; Time Switch Interchange
TSG TSR
TSX TTE TTL
TTP
Type-Length-Value Intelligent Network
TU-n
Telephony Markup Language
TVRO
Terminal Monitor and Control
TV
TMN
Telecommunications Management Network
TW
Time Out
Tx Line
TMO
tmout
Trans Metro Optical (platform)
tmper
Time Period
TNL
Ethernet Tunneling
TMUX TNM TOD ToD
TOH TOP
TOS TP
TWC TX
Terminal Multiplexer
U
Transport Network Management
UART
Television on Demand
UAE
TrueWave Classic – fiber brand
Transmit
Transmit Line
United Arab Emirates
Universal Asynchronous Receiver/ Transmitter
Unavailable Seconds - Line Far End
Termination Point
UAS-P
Unavailable Seconds - Path
Total Quality Management
UASP
UAS-PFE UAS-RS
Tributary
UAS-S
tRTO
TCP Retransmit Timeout
UAS-VFE
Time Slot; Time Stamp; Time Synchronization
UB
Transport System Division
UBRVBR
TSD
TrueWave – fiber brand
UAS-LFE
Type of Service
UASL
TRIB
TSA
Television
Television Receive Only earth station
Task Oriented Practice; Task Oriented Procedure
Technical Reference
TS
Tributary Unit, level n
UAS-L
Transport Overhead
TR
TrTOH
Tributary Unit Group, level n
UAS
Timing Plane Fault Isolation
TRM
Tributary Unit; Transmission Unit
Time of Day
TPFI
TQM
Trail Termination Point
Tributary Unit Group
TMC TML
Transistor Transistor Logic; Time to Live
TUG
TUG-n
IN
Time-Space Switch ASIC
Transparent Terminal Equipment
Transparent LAN Services
Timing Module; Transaction Manager
TM
Technical Service Representative
Transparent Trail Termination Point
TU
TLV
Timing Signal Generator
TTTP
Transoceanic Line Switched Ring
TLSR
Topology State Element
Transport Selector
Unavailable Seconds
Unavailable Second Count-Line
Unavailable Seconds - Line
Unavailable Second Count-Path
Unavailable Seconds - Path Far End
Unavailable Seconds - Regenerator Section Unavailable Seconds - Section
Technical Review Meeting
UAS-V
Unavailable Seconds - VT
Transparent Transport Overhead
UAT
Unavailable Time
Time Slot Assignment
UBR UC
28
Unavailable Seconds - VT Far End Uncorrected Block
Undefined Bit Rate; Unspecified Bit Rate
Unspecified Bit Rate Variable Bit Rate User Channel
UCBE
Uncorrectable Block Error
UTC
UD
Unconditional Disconnect
UTOPIA
UCD
Upstream Channel Descriptor
UDLR
Unidirectional Link Routing
UDR
Unconditional Disconnect Response
UDP
UEM UEQ
UGC UGS
UHD UHF UI
Unsolicited Grant Service Ultra High Density
V
User Interface
PSTN
Ultra High Frequency
Unacknowledged Information Transfer Service
ULSDCC UMTS UNEQ
UOG UPC
UPN
UPnP UPS
Video/Audio
Voltage Alternating Current
Voice Activity Detection
Variable Bit Rate
VBI VC
Unequipped Path; Unequipped
VCAT
Unequipped VT
VCC
VCG
User Network Interface
VCI
User Network Interface
VCL
Unlicensed National Information Infrastructure
VCM
VC-N
Universal OSS Gateway
Ultra Physical Contact; Universal Packet Carrier; Usage Parameter Control
VC-N-Xc
Universal Personal Number
VC-N-Xv
Universal Plug and Play
Virtual Access Partitioning
Vertical Blanking Interval
Virtual Circuit; Virtual Channel; Virtual Container; Virtual Concatenation Virtual Concatenation
Virtual Channel Connection
Virtual Concatenation Group
Virtual Channel Identifier Virtual Channel Link
Virtual Concatenation-group Member
Virtual Container Level N (N=11, 12, 2, 3, 4)
Contiguous Concatenation of X Virtual Containers at Level N Virtual Concatenation of X Virtual containers at Level N
Uninterrupted Power Supply
VCO
Universal Personal Telecommunications
VCSEL
Vertical Cavity Surface-Emitting Laser
VDC
Volts Direct Current
Universal Resource Identifier
US
Upstream
USEPA
Voltage
Public Switched Telephone Network
VBR
VAP
Universal Mobile Telecommunications System
URI
USB
Universal Voice Carrier; Universal Video Carrier
50/40 GHz
Unidirectional Path Switched Ring
URL
Primary Rate Interface
V-band
Ultra Long Haul
UPSR UPT
VAD
Ultraviolet
Upper Layer Section Data Communications Channel
Unbundled Network Elements
UNII
VAC
Unprotected Termination Point; Unshielded Twisted Pair
VADSL or Very high speed (Asymmetric) VDSL Digital Subscriber Line
UNEs
UNI/UNIF
V/A
Universal Test and Operations Physical Interface for ATM
Underwriters Laboratories
Unequipped Path
UNI
V
User Identifier
UNEQ-P UNEQ-V
UVC
Universal Gateway Carrier
UITS ULH
PRI
Unequipped
User Interface Client
UL
UV
Universal Equipment Modules
UIC
UID
UTP
User Datagram Protocol
Universal Time Coordinated; Universal Transport Carrier
VCR
VCXO
Universal Resource Locator
VDSL
Universal Serial Bus
VEC
United States Environmental Protection Agency
VF
29
Voltage Controlled Oscillator Video Cassette Recorder
Voltage Controlled Crystal Oscillator
Very-high-bit-rate Digital Subscriber Line
Voice Equivalent Circuit
Virtual Fiber; Virtual Facility
VFCU VFTP VG
VGA VHF
Voice/FAX Channel Unit
WAN
Wide Area Network
Virtual Group
WBS
Work Breakdown Structure
WCA
Working Channel Access
W-DCS
Wideband Digital Cross-Connect System
Virtual Facility Termination Point Variable Gain Amplifier
Very High Frequency
VLAN
Virtual Local Area Network
VM
Voice Mail; Virtual Memory; Virtual Machine
VLR
VME
VMM
Very Long Reach
Versa Module Eurocard Voice/Modem Module
WB
WC
WCSS WDM WDT WE
VOA
Variable Optical Attenuator
VoIP
Voice over Internet Protocol
WEP
VOQ
Virtual Output Queuing
WFM
VOD VOM VOW VP
VPC
Video on Demand Volt-Ohm Meter
Voice Order Wire
Virtual Path
Virtual Path Connection
VPCI
Virtual Path Connection Identifier
VPI
Virtual Path Identifier
VPG
VPI/VCI VPL
Virtual Path Group
Combined, VPI and VCI identify a connection on an ATM Network Virtual Path Link
VPLS
Virtual Private LAN Service
V-pole
Vertical-pole
VPN VPS
VPSP
VRRP VSA
VSAT
Virtual Private Network
Voice Processing System
Virtual Path Switch Protection
Virtual Router Redundancy Protocol
Virtual-Scheduling Algorithm; Vector Signal Analyzer Very Small Aperture Terminal
VSI
Vendor-Specific Information
VSSP
Virtual Service Switching Point
VT-100
Terminal Emulation System
V-UNI
Virtual User Network Interface
VSR VT
VTG
W W
WAD
Very Short Reach
Virtual Tributary
Virtual Tributary Group
Watt; Working
Wavelength Add and Drop
WECA WFA
WFQ
Working Band; Westbound Watts per channel
WDM Capable Switching System Wavelength Division Multiplexing Watchdog timer
Western Europe
Wireless Ethernet Compatibility Alliance Wired Equivalency Privacy Workforce Automation
Workforce Management
Weighted Fair Queuing
WIF
Wide Area Network Interface
WiMedia
An alliance for Wireless Multimedia
WiFi
WLAN
Wireless Fidelity
Wireless Local Area Network
WLL/WiLL Wireless Local Loop, WiLL is also Motorola’s WLL product line name WM9 WPA
WPS
WRED WSS
WTO
Windows Media Player Version 9
Wireless (WiFi) Protected Access Working/Protect Splitter
Weighted Random Early Discard; Weighted Random Early Detection Wavelength Selective Switch World Trade Organisation
VPN
Virtual Private Network
WWN
World Wide Name
WTR
WWW
X
X.25 XC
Wait to Restore
World Wide Web
Packet Switched Communications Interface Cross Connect
XCVR
Transceiver
XFP
10 Gb/s small form-factor pluggable transceiver
XDSL XML
XMTR XPM
30
See DSL (Digital Subscriber Line) Extensible Markup Language
Transmitter
Cross-Phase Modulation
Z
ZAC
ZWP
Zero Administration Client
Zero Water Peak
Notes
31
Headquarters 7035 Ridge Road Hanover, Maryland 21076 Toll Free (800) 921-1144 Phone (410) 694-5700 Fax (410) 694-5750 www.ciena.com
