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M00004868
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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 BICC or ISUP as signalling protocol and external SIP-I networks (3GPP TS 29.164 version 9.2.0 Release 9)standard by European Telecommunications Standards Institute, 10/01/2010
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