Acronym guide
This Acronyms Guide is a handy guide to help you decipher the telecom industry's acronym alphabet soup.
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Numerics | ||
---|---|---|
Name | Position | |
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 | |
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 |