Table of Contents
1Scope
2References
2.1Normativereferences
2.2Bibliography
3Definitions
4Abbreviations
5GeneralframeworkoftheAALtype2signallingprotocol
5.1InterfacebetweentheAALtype2signallingentityand
theAALtype2serveduser
5.2InterfacebetweentheAALtype2signallingentityandthe
genericsignallingtransport
5.3InterfacebetweentheAALtype2signallingentityand
layermanagement
6Forwardandbackwardcompatibility
7FormatandcodingofAALtype2signallingprotocol
7.1CodingconventionsfortheAALtype2signallingprotocol
7.2FormatandcodingoftheAALtype2signallingprotocol
messages
7.3ParameterspecificationoftheAALtype2signalling
protocolmessages
7.4FieldspecificationoftheAALtype2signallingprotocol
parameters
8ProcedureoftheAALtype2signallingprotocol
8.1Compatibility
8.2Nodalfunctions
8.3Protocolentity
8.4Listoftimers
AnnexA-Supportfornon-switchedscenario
AnnexB-Codingofthecompatibilityinformation
B.1Codingofthecompatibilityinformationfornetworks
usingLinkCharacteristics
B.2Codingofthecompatibilityinformationfornetworksnot
usingLinkCharacteristics
AnnexC-HandlingoftheLinkCharacteristicsandSSCSInformation
inconjunctionwiththemodificationprocedures
C.1PreferredLinkCharacteristicsparameterpresent
C.2PreferredLinkCharacteristicsparameternotpresent
C.3HandlingoftheServiceSpecificInformationparameter
AppendixI-Examplemessagesequences
I.6Successfulmodification
I.7Unsuccessfulmodification
I.8Modificationcollision Abstract
Specifies the inter-node protocol and nodal functions that control AAL type 2 point-to-point connections. The AAL type 2 signalling protocol specified in this Recommendation is usable in switched and non-switched environments and can operate in public or private networks over a range of signalling transport protocol stacks. It also provides maintenance capabilities, carriage of user-plane protocol stack information and carriage of an identifier to link the connection control protocol with other higher layer control protocols. This Recommendation specifies the extensions to the AAL type 2 signalling protocol (Capability set 1) to support the selection of AAL type 2 path, the indication of SSCS for audio extended, the indication of SSCS for multirate extended, the AAL type 2 path redirection request, and the modification of AAL type 2 connection resources during the established phase of the AAL type 2 connection.
