ATM (Asynchronous Transfer Mode) Acronyms
AAL - ATM Adaptation Layer
ABR - Available Bit Rate
ACP - ATM Control Plane
ACR - Average Cell Rate
ADSL - Asynchronous Digital Subscriber Loop
AESA - ATM End System Address
AFI - Authority and Format Identifier (PNNI phase 1)
AIR - Additive Increase Rate (ABR parameter)
AIS - Alarm Indication Signal (UNI Fault Management)
AII - Active Input Interface (Used in UNI PMD specs for Copper/Fiber)
AMS - Audio Visual Multimedia Services
AOI - Active Output Interface (Used in UNI PMD specs for Copper/Fiber)
ARE - All Routes Explorer (LANE Spec.)
ASP - Abstract Service Primitive
ASN.1 - Abstract Syntax Notation One
ATE - ATM Terminating Equipment (SONET)
ATS - Abstract Test Suite
AVSSCS - Audio-Visual Service Specific Convergence Sublayer (ATM Forum)
ATM - Asynchronous Transfer Mode
BECN - Backward Explicit Congestion Notification
BER - Basic Encoding Rules (ASN.1)
BER - Bit Error Rate (link quality specification/testing)
BIP - Bit Interleaved Parity (e.g. SONET BIP-8 for path error monitoring)
BIPV - Bit Interleaved Parity Violation
B-ISDN - Broadband Integrated Services Digital Network
B-HLI - Broadband High Layer Information
B-ICI - Broadband Inter Carrier Interface
BIS - Border Intermediate System (PNNI phase 1)
B-ISSI - Broadband Inter-Switching System Interface
B-LLI - Broadband Low Layer Information
BHLI - Broadband High Leyer Information (information element, part of signaling)
BLLI - Broadband Low Leyer Information (information element, part of signaling)
BN - Bridge Number (LANE Spec.)
BOM - Begining of Message
BPP - Bridge Port Pair (Source Routing Descriptor) (LANE Spec.)
BSS - Broadband Switching System
BT - Burst Tolerance (traffic contract parameter)
BUS - Broadcast and Unknown Server
CAC - Connection Admission Control
CBR - Constant Bit Rate
CCDV - Complience Cell Delay Variation
CCR-RM - Current Cell Rate (field in RM cell)
CDV - Cell Delay Variation (QoS parameter)
CDVT - Cell Delay Variation Tolerance (traffic contract parameter)
CEI - Connection Endpoint Identifier (UNI 3.0)
CER - Cell Error Rate
CES - Circuit Emulation Service
CI - Change Indicator (CES)
CLIP - Calling Line Identification Presentation (Telephony Supplementary Service - Voice over ATM)
CLIR - Calling Line Identification Restriction (Telephony Supplementary Service - Voice over ATM)
CIR - Committed Information Rate
CLNS - Connection-Less Network Service (B-ICI 1.1)
CLP - Cell Loss Priority
CLR - Cell Loss Ratio (QoS parameter)
CLSF - Connection-Less Service Function (B-ICI 1.1)
CMIP - Common Management Information Protocol (OSI Management Info Model)
CMISE - Common Management Information Service Element
CNR - Complex Node Representation (PNNI phase 1)
COLP - Connected Line Identification Presentatyion (Telephony Supplementary Service - Voice over ATM)
COLP - Connected Line Identification Restriction (Telephony Supplementary Service - Voice over ATM)
CPCS - Common Part Convergence Sublayer
CPE - Customer Premise Equipment
CPI - Common Part Indicator
CPN - Customer Premises Network (LANE Spec.)
CRF(VC) - Virtual Channel Connection Related Function (related to UPC/UNI 3.0)
CRF(VP) - Virtual Path Connection Related Function (related to UPC/UNI 3.0)
CRM - Cell Rate Margin (PNNI phase 1)
CRS - Cell Relay Service
CS - Convergence Sublayer (as in CS_PDU)
CTD - Cell Transfer Delay (QoS parameter)
CUG - Closed User Group (VPN)
DA - Destination MAC Address (LANE Spec.)
DDI - Direct Dialing In (Telephony Supplementary Service - Voice over ATM)
DE - Discard Eligibility
DAVIC - Digital Audio Video Council
DES - Destination End-System (Traffic Management v4.0)
DLCI - Data Link Connection Identifier (B-ICI 1.1)
DSDT - Dynamic Structured Date Transfer (CES)
DSM-CC - Digital Storage Media Command and Control
DSP - Domain Specific Part (PNNI phase 1)
DSX - Digital Signal Cross-Connect
DTL - Designated Transit List (PNNI phase 1)
DXI - Data Exchange Interface
ECR - ? (QoS parameter)
EDFG - Edge Device Functional Group (MPOA)
EFCI - Explicit Forward Congestion Indication
ELAN - Emulated LAN (ATM Forum LANE)
EOM - End of Message
EPRCA - Enhanced Proportional Rate Control Algorithm (ATM Forum)
ES - End System
ESI - End System Identifier (PNNI phase 1)
FCVC - Flow Controlled Virtual Circuit
FEA - Functional Entity Action (UNI 3.0, C.3.2.3)
FEBE - Far End Block Error (SONET)
FECN - Forward Explicit Congestion Notification
FERF - Far End Receive Failure (B-ICI 1.1)
FG - Functional Group (MPOA)
FRS - Frame Relay Service (B-ICI 1.1)
FTTC - Fiber-to-the-curb (RBB group)
FTTH - Fiber-to-the-home (RBB group)
GCRA - Generic Cell Rate Algorithm
GFC - Generic Flow Control
GOM - Generic Object Model
HAN - Home Access Network (RBB group)
HBFG - Host Behavior Functional Group (MPOA)
HEC - Header Error Control
HFC - Hybrid Fiber Coax (RBB group)
IASG - Internetwork Address Sub-Group (MPOA)
IASGid - Internetwork Address Sub-Group Identifier (MPOA)
IBSG - Internetwork Broadcast Sub-Group (MPOA)
IBUFG - Internetwork Broadcast/Unknown Functional Group (MPOA)
ICFG - IASG Coordination Function Group (MPOA)
ICI - Inter Carrier Interfase
ICR - Initial Cell Rate (ABR parameter)
IDI - Initial Domain Identifier (PNNI phase 1)
IDP - Initial Domain Part (PNNI phase 1)
IDU - Interface Data Unit (UNI 3.0)
IE - Information Element
IEC - Inter Exchange Carrier (ATM B-ICI)
IISP - Interim Inter-Switch Signaling Protocol aka. P-NNI Phase 0
ILEC - Independent Local Exchange Carriers (ATM B-ICI)
ILMI - Interim Local Management Interface
IOP - Inter-operability (testing)
IS - Intermediate System
IUT - Implementation Under Test
IWF - InterWorking Function (Voice over ATM)
LANE - LAN Emulation (ATM Forum)
LCD - Loss of Cell Delineation
LCT - Last Compliance Time (used in GCRA definition)
LD - LAN Destination (LANE Spec.)
LE - LAN Emulation (also, LANE)
LE_ARP - LAN Emulation Address Resolution Protocol (LANE Spec.)
LEC - LAN Emulation Client (ATM Forum LANE)
LEC - Local Exchange Carrier (B-ICI 1.1)
LECID - LAN Emulation Client Identifier (LANE Spec.)
LECS - LAN Emulation Configuration Server
LES - LAN Emulation Server (ATM Forum LANE)
LGN - Logical Group Node (PNNI phase 1)
LIJ - Leaf Initiated Join (UNI 4.0)
LIS - Logical IP Subnet (rfc1577)
LOF - Loss of Frame (UNI Fault Management)
LOP - Loss of Pointer (UNI Fault Management)
LOS - Loss of Signal (UNI Fault Management)
LSAP - Link Service Access Point (PNNI phase 1)
LSF - Leaf Setup Failure (UNI 4.0 LIJ)
LSR - Leaf Setup Request (UNI 4.0 LIJ)
LTE - Line Terminating Equipment (SONET)
LTH - Length Field (LANE Spec.)
LUNI - LANE UNI (ATM Forum, see LANE)
MBS - Maximum Burst Size
MCR - Minimum Cell Rate (ABR parameter)
MF - Mapping Function (B-ICI 1.1)
MID - Message IDentifier
MIL - Management Information Library
MIM - Management Information Model
MSN - Multiple Subscriber Number (Telephony Supplementary Service - Voice over ATM)
MPOA - Multiprotocol Over ATM (Multiprotocol SWG)
NBMA - Non-Broadcast Multiple Access
NDIS - Network Driver Intrerface Specification (LANE Spec.)
NEXT - Near End Crosstalk (adverse phenomenon accociated with high frequencies over twisted-pair wiring, measured in decibels)
NHRP - Next Hop Routing Protocol (from IETF ROLC WG)
NIU - Network Interface Unit
NLPID - Network Layer Protocol Identifier
NNI - Network Node Interface
NPC - Network Parameter Control (B-ICI 1.1)
Nrm - Number of cells transmitted per RM cell (ABR parameter)
NSAP - Network Layer Service Access Point
NSR - Non-Source Routed (LANE Spec.)
OAM - Operations and Management
OAR - Outside Access Request (PNNI Phase 1)
ODI - Open Data-Link Interface (LANE Spec.)
OCD - out-of-cell Delineation (UNI 3.0 Section 2.1.2.2.2)
OSPF - Open Shortest Path First (PNNI phase 1)
PCI - Protocol Control Information
PCO - Point of Control and Observation (testing)
PCR - Peak Cell Rate (UNI 3.0 - traffic contract parameter)
PDH - Plesiochronous Digital Hierarchy
PDU - Protocol Data Unit
PG - Peer Group (PNNI phase 1)
PGL - Peer Group Leader (PNNI phase 1)
PICS - Protocol Implementation Conformance Statement (testing)
PIXIT - Protocol Implementation eXtra Information for Testing (testing)
PLCP - Physical Layer Convergence Procedure/Protocol
PL-OU - Physical Layer Overhead Unit (UNI physical layer frame definition)
PLS - Physical Signaling Sublayer
PMD - Physical Media Dependent
PMP - Point to Multipoint (UNI 3.0)
PNP - P-NNI Routing Protocol
POH - Path Overhead (SONET)
POI - Path Overhead Indicator
PON - Passive Optical Network (RBB group)
PSA - Proxy Signaling Agent
PTE - Path Terminating Equipment (SONET)
PTI - Payload Type Identifer
PTSE - PNNI Topology State Element (PNNI phase 1)
PTSP - PNNI Topology State Packet (PNNI phase 1)
PVC - Permanent Virtual Channel
QoS - Quality of Service
RBB - Residential Broadband (working subgroup)
RC - Routing Control (LANE Spec.)
RD - Route Descriptor (LANE Spec.)
RD - Routing Domain (PNNI phase 1)
RDB - Route Distribution Protocol (MPOA)
RDF - Reduction Factor (ABR parameter)
RDI - Remote Defect Indicator (UNI Fault Management)
RDP - Route Distribution Protocol (MPOA group)
RI - Routing Information (LANE Spec.)
RII - Routing Information Indicator (LANE Spec.)
RM - Resource Management (cell)
RSB - Residential and Small Business (marketing committee of FORUM)
RSFG - Route Server Functional Group (MPOA)
RT - Routing Type (LANE Spec.)
SA - Source MAC Address (LANE Spec.)
SAAL - Signalling ATM Adaptation Layer
SAR - Segmentation and Reassembly (as in SAR_PDU)
SCP - Subnet Coordination Protocol (MPOA group)
SCR - Sustainable Cell Rate (UNI 3.0 - traffic contract parameter)
SDH - Synchronous Digital Hierarchy
SDT - Structured Date Transfer (CES)
SDU - Service Data Unit (as in AAL_SDU)
SEAL - Simple and Efficient Adaptation Layer (AAL5)
SECB - Severely Errored Cell Block
SES - Source End-System (Traffic Management v4.0)
SIR - Sustained Information Rate
SMDS - Switched Multi-Megabit Data Service
SMT - Station MAnagement
SNAP - SubNetwork Attachment Point (see IEEE 802.1a)
SNDCF - Sub Net Dependant Convergence Function (MPOA)
SNI - Subscriber Network Interface (B-ICI 1.1)
SNMP - Simple Network Management Protocol
SNPA - Subnetwork Point of Attachment (PNNI phase 1)
SONET - Synchronous Optical Network
SPE - Synchronous Payload Envelope (B-ICI 1.1)
SR - Source Routing (Bridging) (LANE Spec.)
SRF - Specifically Routed Frame (LANE Spec.)
SRT - Source Routing Transparent (LANE Spec.)
SSCF - Service Specific Coordination Function
SSCS - Service Specific Convergence Sublayer
SSCOP - Service Specific Connection Oriented Protocol
STB - Set Top Box (RBB group)
STE - Section Terminating Equipment (SONET)
STE - Spanning Tree Explorer (LANE Spec.)
STT - Set Top Terminal (RBB group)
STS - Synchronous Transport Signal (B-ICI 1.1)
SUB - Subaddressing (Telephony Supplementary Service - Voice over ATM)
SVC - Switched Virtual Channel
TAT - Theoretical Arrival Time (used in GCRA definition)
TAXI - Transparent asynchronous transmitter/receiver interface
TB - Transparent Bridging (LANE Spec.)
TC - Transmission Convergence
TIG - Topology Information Group (PNNI phase 1)
TLV - Type, Length, Value (PNNI phase 1)
TMN - Telecommunications Management Network
TOF - Time Out Factor Exponent (ABR parameter)
TUC - Total User Cell count
TUCD - Total User Cell Difference
UBR - Unspecified Bit Rate
UME - UNI Management Entity (used in ILMI definition)
UNI - User-Network Interface
UPC - Usage Parameter Control
URA - User Requirement Analysis
VBR - Variable Bit Rate
VC - Virtual Channel
VCI - Virtual Channel Identifier
VCL - Virtual Channel Link (UNI 3.0)
VF - Varience Factor (PNNI phase 1)
VINCE - Vendor Independent Network Control Entity
VoD - Video on Demand
VP - Virtual Path
VPC - Virtual Path Connection
VPCI - Virtual Path Connection Identifier
VPI - Virtual Path Identifier
VPL - Virtual Path Link (UNI 3.0)
VPN - Virtual Private Network
VPT - Virtual Path Terminator (UNI 3.0)
VTG - Virtual Trunk Group (Voice over ATM)
WFQ - Weighted Fair Queuing
Last updated: January 12, 1999