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DIN ETS 300103
Integrated Services Digital Network (ISDN); support of CCITT recommendation X.21, X.21bis and X.20bis based Data Terminal Equipments (DTEs) by an ISDN; synchronous and asynchronous terminal adaption functions; english version ETS 300103:1990
Edition
1992-02
PD 7027
Essential requirements for terminal equipment intended for connection to digital leased circuits of the public telecommunications network using a CCITT Recommendation X.21bis interface
Edition
1995-01-15
DIN ETS 300601
European digital cellular telecommunications system (Phase 2) - Interworking between the Public Land Mobile Network (PLMN) and the Circuit Switched Public Data Network (CSPDN); English version ETS 300601:1994
Edition
1995-01
DIN ETS 300584
European digital cellular telecommunications system (Phase 2) - Terminal Adaptation Functions (TAF) for services using synchronous bearer capabilities; English version ETS 300584:1994
Edition
1995-01