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) (Endorsement of the English version ETS 300 976 V 5.2.2 (1997-05) as a German standard) (Endorsement of the English version ETS 300 976 V 5.3.1 (1997-09) as a German standard) (Endorsement of the English version ETS 300 976 V 5.4.1 (1998-01) as a German standard) (Endorsement of the English version ETS 300 976 V 5.5.1 (1998-03) as a German standard) (Endorsement of the English version ETS 300 976 V 5.6.1 (1998-07) as a German standard) (Endorsement of the English version ETS 300 976 V 5.7.1 (1998-10) as a German standard) (Endorsement of the English version ETS 300 976 V 5.8.1 (1999-03) as a German standard) (Endorsement of the English version ETS 300 976 V 5.9.1 (1999-08) as a German standard) (Endorsement of the English version ETS 300 976 V 5.10.1 (2000-06) as a German standard)

Alarm systems - Part 7-11: Message formats and protocols for serial data interfaces in alarm transmission systems - Serial protocol for use in digital communication systems using ITU-T Recommendation V.23 signalling at interfaces with the PSTN