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M00000502
New product
ETSI ETS 300 976
Digital cellular telecommunications system (Phase 2+) (GSM); 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 version 5.3.1)standard by European Telecommunications Standards Institute, 09/01/1997
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