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ITU H.248.1:2005

ITU H.248.1:2005 Gateway Control Protocol: Version 3 Specifies the H.323 Gateway function defined in ITU-T Rec. H.246 into functional subcomponents and specifies the protocols these components use to communicate. It allows implementations of H.323 gatew

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Table of Contents

1Scope
2References
2.1Normativereferences
2.2Informativereferences
3Definitions
4Abbreviations
5Conventions
6Connectionmodel
6.1Contexts
6.2Terminations
6.3Wildcardingprinciples
7Commands
7.1Descriptors
7.2Commandapplicationprogramminginterface
8Transactions
8.1Commonparameters
8.2Transactionapplicationprogramminginterface
8.3Messages
9Transport
9.1Orderingofcommands
9.2Protectionagainstrestartavalanche
9.3ProtectionagainstNotifyavalanche
10Securityconsiderations
10.1Protectionofprotocolconnections
10.2InterimAHscheme
10.3Protectionofmediaconnections
11MG-MGCcontrolinterface
11.1MultipleVirtualMGs
11.2Coldstart
11.3Negotiationofprotocolversion
11.4FailureofaMG
11.5FailureofanMGC
11.6MGC-MGcontrolassociationmonitoring
12Packagedefinition
12.1Guidelinesfordefiningpackages
12.2Guidelinestodefiningparameterstoevents
andsignals
12.3Identifiers
12.4Packageregistration
13Profiledefinition
14IANAconsiderations
14.1Packages
14.2Errorcodes
14.3ServiceChangereasons
14.4Profiles
AnnexA-Binaryencodingoftheprotocol
A.1Codingofwildcards
A.2ASN.1syntaxspecification
A.3DigitMapsandpathnames
AnnexB-Textencodingoftheprotocol
B.1Codingofwildcards
B.2ABNFspecification
B.3Hexadecimaloctetcoding
B.4Hexadecimaloctetsequence
AnnexC-Tagsformediastreamproperties
C.1Generalmediaattributes
C.2Muxproperties
C.3Generalbearerproperties
C.4GeneralATMproperties
C.5Framerelay
C.6IP
C.7ATMAAL2
C.8ATMAAL1
C.9Bearercapabilities
C.10AAL5properties
C.11SDPequivalents
C.12H.245
AnnexD-TransportoverIP
D.1TransportoverIP/UDPusingApplicationLevel
Framing(ALF)
D.2UsingTCP
AnnexE-Basicpackages
E.1Generic
E.2BaseRootPackage
E.3ToneGeneratorPackage
E.4ToneDetectionPackage
E.5BasicDTMFGeneratorPackage
E.6DTMFDetectionPackage
E.7CallProgressTonesGeneratorPackage
E.8Callprogresstonesdetectionpackage
E.9AnalogLineSupervisionPackage
E.10BasicContinuityPackage
E.11NetworkPackage
E.12RTPPackage
E.13TDMCircuitPackage
E.14SegmentationPackage
E.15NotificationBehaviour
AnnexF-ServiceChangeProcedures
F.1Introduction
F.2ControlAssociationDefinition
F.3EventsleadingtoServiceChangeProcedures
F.4ServiceChangeElementDescription
F.5UseofServiceChangeparameters
F.6ServiceChangeversusTerminationState
AppendixI-Examplecallflows
I.1Residentialgatewaytoresidentialgatewaycall
AppendixII-H.248Packagetemplate
AppendixIII-H.248ProfileDefinitiontemplate

Abstract

Specifies the H.323 Gateway function defined in ITU-T Rec. H.246 into functional subcomponents and specifies the protocols these components use to communicate. It allows implementations of H.323 gateways to be highly scalable and encourages leverage of widely deployed Switched Circuit Network (SCN) capabilities such as SS7 switches.

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