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Acronym list

You can find these acronyms and more defined at the IBM Software Glossary

[ A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z ]


A

AAL
ATM Adaptation Layer
AAL1
ATM Adaptation Layer type 1 for constant bit-rate traffic
AAL3/4
ATM Adaptation Layer type 3/4 for variable bit-rate traffic with no end-to-end timing requirements
AAL5
ATM Adaptation Layer type 5 for variable bit-rate traffic with no end-to-end timing requirements (low overhead)
ABM
Asynchronous Balanced Mode
ABR
Available Bit Rate
AD
Approved Direction
AIW
APPN Implementers Workshop
ANR
Automatic Network Routing
AP
Approved Pages
APPC
Advanced Program-to-Program Communication
APPN
Advanced Peer-to-Peer Networking
ARB
Adaptive Rate-Based Congestion Control
ARP
Address Resolution Protocol
ASM
Address Space Manager
ATM
Asynchronous Transfer Mode

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B

BAN
Boundary Access Node
BECN
Backward Explicit Congestion Notification (Frame Relay)
BHLI
Broadband High Layer Information
BLLI
Broadband Low Layer Information
B-ISDN
Broadband Integrated Services Digital Network
BOF
Birds Of a Feather
BN
Border Node
BrNN
Branch Network Node
BTU
Basic Transmission Unit

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C

CBR
Constant Bit Rate
CDV
Call Delay Variation
CLP
Call Loss Priority
CIW
CPI-C Implementers Workshop
CMIP
Common Management Information Protocol
CN
Connection Network
COS
Class Of Service
CP
Control Point or Closed Pages
CPCS
Common Part Convergence Sublayer
CPI-C
Common Programming Interface for Communication
CP-MSU
Control Point Management Services Unit
CS
Configuration Services
CV
Control Vector
CxM
Connection Manager

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D

DHCP
Dynamic Host Configuration Protocol
DLC
Data Link Control
DLCI
Data Link Connection Identifier
DLSw
Data Link Switching
DLU
Destination Logical Unit
DLUR
Dependent LU Requester
DLUS
Dependent LU Server
DS
Directory Services
DSAP
Destination Service Access Point

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E

E.164
CCITT (now ITU-T) Recommendation for Numbering Plan for the ISDN Era
EBN
Extended Border Node
EFCI
Explicit Forward Congestion Indication
EN
End Node
ENCP
End Node Control Point
ESI
End System Identifier (field in private ATM addresses)

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F

FECN
Forward Explicit Congestion Notification (Frame Relay)
FID
Format Identification (specified in SNA transmission headers)
FID2
FID type X'2' (used for APPN/ISR traffic)
FID5
FID type X'5' (used for HPR traffic)
FR
Frame Relay
FSM
Finite State Machine
FTP
File Transfer Protocol

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G

GCRA
Generic Cell Rate Algorithm
GDS
General Data Stream
GFC
Generic Flow Control

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H

HBN
HPR Border Node
HDLC
High-Level Data Link Control
HPR
High Performance Routing

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I

IANA
Internet Assigned Number Authority
IE
Information Element
IETF
Internet Engineering Task Force
ILMI
Interim Local Management Interface
IP
Internet Protocol
ISDN
Integrated Services Digital Network
ISR
Intermediate Session Routing
ITU-T
International Telecommunication Union - Telecommunication Standardization Sector

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J


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K


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L

LAN
Local Area Network
LDLC
Logical Data Link Control
LEN
Low Entry Networking
LL ATMI
Low-level ATM Interface
LLC
Logical Link Control
LLC1
IEEE 802.2 LLC type 1
LLC2
IEEE 802.2 LLC type 2
LSAP
Link Service Access Point
LSCB
Link Station Control Block
LU
Logical Unit

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M

MAC
Media Access Control
MAN
Metropolitan Area Network
MBS
Maximum Burst Size
MDS
Multiple Domain Support
MDS-MU
Multiple Domain Support Message Unit
MIB
Management Information Base
MPTN
Multiprotocol Transport Networking
MS
Management Services
MTU
Maximum Transmission Unit

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N

NAU
Network Accessible Unit
NCL
Network Control Layer
NDIS
Network Driver Interface Specification
NETID
Network Identifier
NLP
Network Layer Packet
NLPID
Network Layer Protocol Identifier
NN
Network Node
NNI
Network Node Interface
NNS
Network Node Server
NOF
Node Operator Facility
NPI
Numbering Plan Identification

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O

OAM
Operations Administration and Maintenance
ODI
Open Data-Link Interface
OLU
Origin Logical Unit

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P

PBN
Peripheral Border Node
PCM
Port Connection Manager
PCR
Peak Cell Rate
PDU
Protocol Data Unit
PLU
Primary Logical Unit
PT
Payload Type
PU
Physical Unit
PVC
Permanent Virtual Connection

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Q

Q.2100
ITU-T Recommendation for B-ISDN Signalling ATM Adaptation Layer Overview Description
Q.2110
ITU-T Recommendation for B-ISDN ATM Adaptation Layer Service Specific Connection Oriented Protocol
Q.2130
ITU-T Recommendation for B-ISDN ATM Adaptation Layer Service Specific Coordination Function for Signalling at the User to Network Interface
Q.2931
ITU-T Recommendation for B-ISDN UNI Layer 3 Specification for Basic Call/Connection Control
Q.2963
ITU-T Recommendation for Digital Subscriber Signalling System No. 2 - Connection Modification - Peak Cell Rate Modification by the Connection Owner
QLLC
Qualified Logical Link Control
QoS
Quality of Service

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R

RFC
Request For Comments
RIG
Related Interest Group
RSCV
Route Selection Control Vector
RSVP
Route ReSerVation Protocol
RTP
Rapid Transfer Protocol

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S

SAAL
Signaling ATM Adaptation Layer
SATF
Shared Access Transport Facility
SAP
Service Access Point
SAR
Segmentation and Reassembly Sublayer
SCM
Session Connector Manager
SCR
Sustainable Cell Rate
SDLC
Synchronous Data Link Control
SDU
Service Data Unit
SHM
Short Hold Mode
SIG
Special Interest Group
SLU
Secondary Logical Unit
SM
Session Manager
SNA
Systems Network Architecture
SNMP
Simple Network Management Protocol
SOC
Sphere Of Control
Sonet
Synchronous Optical Network
SRB
Source-Route Bridge
SS
Session Services
SSAP
Source Service Access Point
SSCF
Service Specific Coordination Function
SSCOP
Service Specific Connection Oriented Protocol
SSCP
System Services Control Point
SSCS
Service Specific Convergence Sublayer
SVC
Switched Virtual Connection

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T

TCP
Transmission Control Protocol
TDB
Topology Database
TDU
Topology Database Update
TG
Transmission Group
TGV
Transmission Group Vector
TOA
Type Of Address
TOS
Type of Service
TRS
Topology and Routing Services

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U

UBR
Unspecified Bit Rate
UDP
User Datagram Protocol
UNI
User-to-Network Interface
URL
Universal Resource Locator

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V

VBR
Variable Bit Rate
VCC
Virtual Channel Connection
VCI
Virtual Channel Identifier
VPI
Virtual Path Identifier
VPI 0 / VPI 5
Virtual channel reserved for the control plane at the UNI
VRN
Virtual Routing Node

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W

WAN
Wide Area Network
WG
Working Group

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X

XID
Exchange Identification
XID3
XID Format X'3' (for T2.1 to T2.1|4|5 node exchanges)
XID3(na)
XID Format X'3' in non-activation phase
XID3(np)
XID Format X'3' in negotiation proceeding phase
XID3(pn)
XID Format X'3' in prenegotiation phase

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Y


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Z


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Last Update: November 12, 1997

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