Table of Contents
1General
1.1Messagetypecode
1.2Formattingprinciples
1.3Mandatoryfixedpart
1.4Mandatoryvariablepart
1.5Optionalpart
1.6Endofoptionalparametersoctet
1.7Orderoftransmission
1.8Codingofsparebits
1.9Nationalmessagetypesandparameters
1.10Internationalmessagetypesandparameters
2Codingofthegeneralparts
2.1Codingofthemessagetype
2.2Codingofthelengthindicator
2.3Codingofthepointers
3SCCPparameters
3.1Endofoptionalparameters
3.2Destinationlocalreference
3.3Sourcelocalreference
3.4Calledpartyaddress
3.4.1Addressindicator
3.4.2Address
3.5Callingpartyaddress
3.6Protocolclass
3.7Segmenting/reassembling
3.8Receivesequencenumber
3.9Sequencing/segmenting
3.10Credit
3.11Releasecause
3.12Returncause
3.13Resetcause
3.14Errorcause
3.15Refusalcause
3.16Data
3.17Segmentation
3.18Hopcounter
3.19Importance
3.20Longdata
4SCCPmessagesandcodes
4.1General
4.2Connectionrequest(CR)
4.3Connectionconfirm(CC)
4.4Connectionrefused(CREF)
4.5Released(RLSD)
4.6Releasecomplete(RLC)
4.7Dataform1(DT1)
4.8Dataform2(DT2)
4.9Dataacknowledgement(AK)
4.10Unitdata(UDT)
4.11Unitdataservice(UDTS)
4.12Expediteddata(ED)
4.13Expediteddataacknowledgement(EA)
4.14Resetrequest(RSR)
4.15Resetconfirmation(RSC)
4.16Protocoldatauniterror(ERR)
4.17Inactivitytest(IT)
4.18Extendedunitdata(XUDT)
4.19Extendedunitdataservice(XUDTS)
4.20Longunitdata(LUDT)
4.21Longunitdataservice(LUDTS)
5SCCPManagementmessagesandcodes
5.1General
5.1.1SCMGformatidentifier
5.1.2Formattingprinciples
5.2SCMGmessageparameters
5.2.1AffectedSSN
5.2.2AffectedPC
5.2.3Subsystemmultiplicityindicator
5.2.4SCCPcongestionlevel
5.3SCMGMessages
6References
6.1Normativereferences
6.2Informativereferences
AnnexAMappingforcauseparametervalues
A.1Introduction
A.2Connectionrefusal
A.3Connectionrelease
A.4Connectionreset
A.5Returncause
AnnexBInternationalSCCPaddressingandformat
specification
B.1Introduction
B.2GuidelinesonusingSCCPaddressinginformation
elementsintheinternationalnetwork
B.3GTroutingspecificationofinternational
services
B.4InternationalGTroutingspecification
B.4.1Translationselector:TT=17,
NP=1,NAI=4
B.4.2Translationselector:TT=1,
NP=0,NAI=4
B.4.3Translationselector:TT=2,
NP=2,NAI=4
B.4.4Translationselector:TT=0,
NP=1,NAI=4
B.4.5Translationselector:TT=3,
NP=1,NAI=4 Abstract
Defines the SCCP messages formats and codes for supporting the connection-oriented services, connectionless services and SCCP management. The SCCP messages are carried by the MTP.
