Network Aspects (NA) - Metropolitan Area Network (MAN) - Physical Layer Convergence Procedure (PLCP) for 34,368 Mbit/s - Protocol Implementation Conformance Statement (PICS); English version ETS 300270:1994
Edition 1994-10

European digital cellular telecommunications system (Phase 2) - Support of Dual Tone Multi-Frequency signalling (DTMF) via the GSM system; English version ETS 300532:1994
Edition 1995-01

Broadband Integrated Services Digital Network (B-ISDN) - Signalling system No. 7 - Interworking between Broadband ISDN User Part (B-ISUP) and Digital Subscriber Signalling system No. 2 (DSS2) (ITU-T Q.2650:1995, modified); English version ETS 300495:1997
Edition 1998-02

Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary service; functional capabilities and information flows; english version ETS 300057:1992
Edition 1992-11

Integrated Services Digital Network (ISDN); telephony 3,1 kHz teleservice; service description; english version ETS 300111:1992
Edition 1993-04

European digital cellular telecommunications system (Phase 2) - Location registration procedures; English version ETS 300530:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Mobile Station - Base Station System (MS-BSS) interface - General aspects and principles; English version ETS 300550:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - GSM Public Land Mobile Network (PLMN) access reference configuration; English version ETS 300551:1994
Edition 1995-01

European digital cellular telecommunications system (phase 2) - Line identification supplementary services, stage 3; English version ETS 300565:1995
Edition 1995-08

European digital cellular telecommunications system (phase 2) - Unstructured Supplementary Service Data (USSD), stage 3; English version ETS 300572:1995
Edition 1995-08