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ETSI GTS GSM 09.03
- Digital cellular telecommunications system; Signalling requirements on interworking between the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN) and the Public Land Mobile Network (PLMN) (GSM 09.03)
- standard by European Telecommunications Standards Institute, 12/01/1996
- Publisher: ETSI
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The purpose of this Global System for Mobile communications Technical Specification (GTS) is to present the general requirements for the Pub lic Switched Telephone Network (PSTN) and the Integrated Services Digi tal Network (ISDN) as well as for the mobile network to be met in orde r to ensure a correct integration of the mobile service in the fixed n etwork. This technical specification covers only the signalling aspects of the interworking. The service requirements are covered in a specific spec ification: only the signalling impacts are dealt with here.