ETSI TS 129 007

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ETSI TS 129 007 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); General requirements on interworking between the Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN) (3G TS 29.

standard published 01/01/2000 by European Telecommunications Standards Institute

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This TS identifies the Mobile-services Switching Centre/Interworking Functions (MSC/IWFs) and requirements to support interworking between: a)PLMN and PSTN b)PLMN and ISDN It is not possible to treat ISDN and PSTN as one type of network, even when both ISDN and PSTN subscribers are served by the same exchange because of the limitations of the PSTN subscribers access i.e. analogue connection without D-channel signalling. Within this TS, the requirements for voice and non-voice (data) calls are considered separately.