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ETSI TS 129 016
M00002872
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ETSI TS 129 016 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); General Packet Radio Service (GPRS); Serving GPRS Support Node (SGSN) - Visitors Location Register (VLR); Gs interface network service specification (3GPP TS 29.016 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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The scope of ETSI TS 129 013 is to provide a specification for interworking between the ISDN Application ServiceElement (ASE) protocol for supplementary services and the Mobile Application Part (MAP) protocol on MAP Dinterfaceprotocol for handling of supplementary services within the digital cellular telecommunications system(Phase 2+). This version of the specification includes the interworking for the Call Completion to Busy Subscriber(CCBS) service between the ISDN CCBS-ASE and MAP.The MAP protocol for CCBS service is specified in GSM 09.02. The ISDN CCBS-ASE protocol is specified inETS 300 356-18. The ISDN CCBS-ASE protocol is also commonly referred to as the SSAP protocol in GSM 03.93.This specification clarifies the interworking within the HLR between these protocols for the Call Completion to BusySubscriber (CCBS) service.