Table of Contents
1General
2Overviewofcallcontrol
3Messagefunctionaldefinitionsandcontent
4Generalmessageformatandinformationelements
coding
5Circuit-switchedcallcontrolprocedures
6Packetcommunicationprocedures
7Usersignallingbearerservicecallcontrolprocedures
8Circuit-modemultirate(64kbit/sbaserate)
procedures
9Listofsystemparameters
AnnexAUsersideandnetworksideSDLdiagrams
AnnexBCompatibilityandaddresschecking
AnnexCTransitnetworkselection
AnnexDExtensionsforsymmetriccalloperation
AnnexENetwork-specificfacilityselection
AnnexFD-channelbackupprocedures
AnnexGUseofprogressindicators
AnnexHMessagesegmentationprocedures
AnnexILowlayerinformationcodingprinciples
AnnexJLowlayercompatibilitynegotiation
AnnexKProceduresforestablishmentofbearerconnection
priortocallacceptance
AnnexLOptionalproceduresforbearerservicechange
AnnexMAdditionalbasiccallsignallingrequirementsfor
thesupportofprivatenetworkinterconnection
forVirtualPrivateNetworkapplications
AppendixM.IDiscriminationofcallsinaVPNcontext
bymeansoftheNetwork-specificfacilities
informationelement
AnnexNFlexiblechannelselection
AppendixIIExamplemessageflowdiagramsandexample
conditionsforcausemapping
AppendixIIISummaryofassignedinformationelement
identifierandmessagetypecodepointsforthe
93x-seriesandQ.95x-seriesofRecommendations Abstract
Defines methods for establishment, maintenance and clearance of network connections at the ISDN user-network interface, which are specified as messages exchanged over the D-channel of basic and primary rate interface structures. Covers the functions and methods for this protocol, together with its relationship with other layers, in general terms in Recommendation Q.930/I.450.
