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ETSI TS 129 164
M00002855
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ETSI TS 129 164 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Interworking between the 3GPP CS domain with BIC or ISUP as signalling protocol and external SIP-I networks (3GPP TS 29.164 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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ETSI TS 129 164 defines interworking procedures between a 3GPP CS domain (see 3GPP TS 23.205 [2]) whichapplies either BICC or ISUP as signalling protocol, and external networks that use SIP-I (see ITU-T Q.1912.5 [20],Profile C) as signalling protocol. The document also describes the related interworking architecture. The control planeinterworking is performed by an interworking unit at the interconnection between the 3GPP CS domain and an externalSIP-I network. The user plane interworking is performed by an MGW. The present document defines stage 2procedures for the control of the MGW.The present specification reuses existing interworking procedures of 3GPP TS 29.163 [4] and ITU-T Q.1912.5 [20],Profile C, as far as possible.