prSSH ETS 300 604:1995 ed.2

European digital cellular telecommunications system (Phase 2); General requirements on interworking between the Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN) (GSM 09.07)

Scope

The purpose of this technical specification (TS) is to identify the MSC/IWFs and requirements to support interworking between: i) PLMN and PSTN ii) 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 ie analogue connection without D-channel signalling.