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Content for  TS 29.231  Word version:  17.0.0

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1  Scopep. 6

The present document describes the protocols to be used when SIP-I is optionally used as call control protocol in a 3GPP CS core network on Nc interface, see TS 23.231. The SIP-I protocol operates between (G)MSC servers. The SIP-I architecture consists of a number of protocols. The following types of protocols are described: call control protocol, resource control protocols and user plane protocol for this architecture. The architecture complies with the requirements imposed by TS 23.231 and TS 23.153.
Interworking of SIP-I on Nc to external networks is described by TS 29.235.
The present document is valid for a 3rd generation PLMN (UMTS) complying with Release 8 and later.
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2  Referencesp. 6

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TS 23.231: "SIP-I based Circuit Switched Core Network ; Stage 2".
[2]
TS 23.153: "Out of Band Transcoder Control; Stage 2".
[3]
TS 29.235: "Interworking between the 3GPP CS domain with SIP-I as signalling protocol and other networks".
[4]
ITU-T Recommendation Q.1912.5: "Interworking between Session Initiation Protocol (SIP) and Bearer Independent Call Control protocol or ISDN User Part".
[5]
RFC 2046:  "Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types".
[6]
RFC 3966:  "The tel URI for Telephone Numbers".
[7]
RFC 2976:  "The SIP INFO method".
[8]
RFC 3204:  "MIME media types for ISUP and QSIG Objects".
[9]
RFC 3261:  "SIP: Session Initiation Protocol".
[10]
RFC 3262:  "Reliability of Provisional Responses in the Session Initiation Protocol (SIP)".
[11]
RFC 3264:  "An Offer/Answer Model with the Session Description Protocol (SDP)".
[12]
RFC 3311:  "The Session Initiation Protocol (SIP) UPDATE Method".
[13]
RFC 3312:  "Integration of Resource Management and Session Initiation Protocol (SIP)".
[14]
RFC 3323:  "A Privacy Mechanism for the Session Initiation Protocol (SIP)".
[15]
RFC 3325:  "Private Extensions to the Session Initiation Protocol (SIP) for Network Asserted Identity within Trusted Networks".
[16]
RFC 3326:  "The Reason Header Field for the Session Initiation Protocol (SIP)".
[17]
RFC 4566:  "SDP: Session Description Protocol".
[18]
TS 29.232: "Media Gateway Controller (MGC) - Media Gateway (MGW) interface; Stage 3".
[19]
TS 29.415: "Core network Nb data transport and transport signalling".
[20]
TS 29.414: "Core Network Nb data transport and transport signalling".
[21]
TR 21.905: "Vocabulary for 3GPP Specifications".
[22]
RFC 3389:  "Real-time Transport Protocol (RTP) Payload for Comfort Noise".
[23]
RFC 4733:  "RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals".
[24]
RFC 4028:  "Session Timers in the Session Initiation Protocol (SIP)".
[25]
RFC 4960:  "Stream Control Transmission Protocol".
[26]  Void
[27]
RFC 4168:  "The Stream Control Transmission Protocol (SCTP) as a Transport for the Session Initiation Protocol (SIP)".
[28]
RFC 5407:  "Example Call Flows of Race Conditions in the Session Initiation Protocol (SIP)".
[29]
RFC 791:  "Internet Protocol (IP)".
[30]
RFC 2460:  "Internet Protocol, Version 6 (IPv6)".
[31]
RFC 3550:  "RTP: A Transport Protocol for Real-Time Applications".
[31a]
TS 26.102: "Mandatory speech codec; Adaptive Multi-Rate (AMR) speech codec;Interface to Iu, Uu and Nb".
[32]
TS 26.103: "Speech codec list for GSM and UMTS".
[33]
TS 23.003: "Numbering, addressing and identification".
[34]
RFC 4715:  " The Integrated Services Digital Network (ISDN) Subaddress Encoding Type for tel URI ".
[35]
RFC 4320:  "Actions Addressing Identified Issues with the Session Initiation Protocol's (SIP) Non-INVITE Transaction".
[36]
RFC 5079:  "Rejecting Anonymous Requests in the Session Initiation Protocol (SIP)".
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3  Definitions, symbols and abbreviationsp. 7

3.1  Definitionsp. 7

3.2  Symbolsp. 7

For the purposes of the present document, the following symbols apply:
Nc
Interface between the(G)MSC servers.
Mc
Interface between the server and the media gateway.
Nb
Interface between media gateways (MGW).

3.3  Abbreviationsp. 8

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
BCU
Bearer Control Unit
BICC
Bearer Independent Call Control
MGC
Media Gateway Controller
MIME
Multi-purpose Internet Mail Extensions
OoBTC
Out of Band Transcoder Control
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