Asynchronous Transfer Mode (ATM) Dictionary

Maintained by the Cell Relay Retreat, this dictionary evolves via user submissions. Click here to learn how.

   A-C   D-I   J-N   O-R   S-Z

   
A
AAL - ATM Adaptation Layer
ABR - Available Bit Rate
AIS - Alarm Indication Signal (UNI Fault Management)
AII - Active Input Interface (Used in UNI PMD specs for Copper/Fiber)
AOI - Active Output Interface (Used in UNI PMD specs for Copper/Fiber)
API - Applications Program Interface
ARP - Address Resolution Protocol
AS - Autonomous System
ASN - Autonomous System Number
ASN.1 - Abstract Syntax Notation One
Asynchronous - not limited to sending data during a set time slot; having different rates
ATE - ATM Terminating Equipment (SONET)
ATM - Asynchronous Transfer Mode
ATM Layer
AVSSCS - Audio-Visual Service Specific Convergence Sublayer
B
BECN - Backward Explicit Congestion Notification
BER - Basic Encoding Rules (ASN.1)
BER - Bit Error Rate (link quality specification/testing)
BGP - Border Gateway Protocol
BIP - Bit Interleaved Parity (e.g. SONET BIP-8 for path error monitoring)
BIPV - Bit Interleaved Parity Violation
BIS - Border Intermediate System (ATM Forum, PNNI SWG)
B-ISDN - Broadband Integrated Services Digital Network
B-HLI - Broadband High Layer Information
B-ICI - Broadband Intercarrier Interface
B-ISSI - Broadband Inter-Switching System Interface
B-LLI - Broadband Low Layer Information
BOM - Begining of Message
BSS - Broadband Switching System
BUS - Broadcast and Unknown Server
C
CAC - Connection Admission Control
CBR - Constant Bit Rate
CCITT (ITU) - Consultative Committee on International Telephony and Telegraphy
CDV - Cell Delay Variation
CDVT - Cell Delay Variation Time
CE - Customer Equipment
CEI - Connection Endpoint Identifier (UNI 3.0)
CES - Circuit Emulation Service
CIR - Committed Information Rate
CLP - Cell Loss Priority
CLR - Cell Loss Ratio
CMISE - Common Management Information Service Element
CNR - Complex Node Representation (ATM Forum, PNNI SWG)
CPCS - Common Part Convergence Sublayer
CPE - Customer Premise Equipment
CPI - Common Part Indicator
CR-LDP - Constrained Routing Label Distribution Protocol
CRF(VC) - Virtual Channel Connection Related Function (related to UPC/UNI 3.0)
CRS - Cell Relay Service
CS - Convergence Sublayer (as in CS_PDU)
CTD - Cell Transfer Delay
    
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