Table of Contents
1Scope
2Normativereferences
3Definitions
4Abbreviations
5Conventions
6FrameworkofAALtype3/4
7ServiceprovidedbytheCommonPartoftheAAL
type3/4
7.1PrimitivesfortheAAltype3/4
7.2PrimitivesfortheCPCSoftheAALtype3/4
7.2.1Primitivesforthedatatransferservice
7.2.2Primitivesfortheabortservice
7.3PrimitivesfortheSARsublayeroftheAAL
type3/4
7.3.1Primitivesforthedatatransferservice
7.3.2Primitivesfortheabortservice
8Interactionwiththemanagementandcontrolplane
8.1Managementplane
8.2Controlplane
9Functions,structureandcodingoftheAALtype3/4
9.1SegmentationandReassembly(SAR)sublayer
9.1.1FunctionsoftheSARsublayer
9.1.2SAR-PDUstructureandcoding
9.2ConvergenceSublayer(CS)
9.2.1Functions,structureandcodingforthe
CPCS
10Procedures
10.1ProceduresoftheSARsublayer
10.1.1StatevariablesoftheSARsublayeratthe
senderside
10.1.2ProceduresoftheSARsublayeratthe
senderside
10.1.3StatevariablesoftheSARsublayerat
thereceiverside
10.1.4ProceduresoftheSARsublayeratthe
receiverside
10.2ProceduresoftheCPCSforthemessagemodeservice
10.2.1StatevariablesoftheCPCSatthesender
side
10.2.2ProceduresoftheCPCSatthesendersidefor
themessagemodeservice
10.2.3StatevariablesoftheCPCSatthereceiver
side
10.2.4ProceduresoftheCPCSatthereceiverside
10.3ProceduresoftheCPCSforthestreamingmode
service
AnnexADetailsofthedataunitnamingconvention
AnnexBGeneralframeworkoftheAALtype3/4
B.1Messagesegmentationandreassembly
B.2PDUheaders,trailersandterminology
B.3SARandCPCSformat
B.4RelationoftheMIDfieldtotheSNfieldand
Btag/Etagfields
B.5Examplesofthesegmentationandreassembly
process
AnnexCFunctionalmodelfortheAALtype3/4
AnnexDSDLdiagramsfortheSARandtheCPCSoftheAAL
type3/4
D.1SDLfortheSARsublayer
D.1.1TheSARsender
D.1.2TheSARreceiver
D.2SDLforCPCSprocedures
D.2.1TheCPCSsender
D.2.2TheCPCSreceiver
AppendixIMultiplexingAALtype3/4connectionsonan
ATMconnectionusingtheMIDfield
I.1Introduction
I.2Multiplexingconfigurations
I.2.1Point-to-pointAALconnectionona
point-to-pointATMconnection
I.2.2Point-to-pointAALconnectionona
point-to-multipointATMconnection
I.2.3Point-to-pointAALconnectionona
multipoint-to-multipointATMconnection
I.2.4Point-to-multipointAALconnection
onapoint-to-multipointATM-
connection
I.2.5Point-to-multipointAALconnection
onamultipoint-to-multipoint
ATM-connection Abstract
Enhances the services given by the ATM layer for supporting of functions required by the next higher layer. Carries out functions required by the user, control and management planes and supports the mapping between the ATM layer and the next higher layer. AAL type 3/4 supports the non-assured transfer of user data frames. Internal multiplexing function permits the setting up of several concurrent AAL type 3/4 user connections on one ATM connection. Maintains the data sequence integrity and detects transmission errors on each such connection.
