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

Universal Personal Telecommunication (UPT) - Specification of the security architecture for UPT phase 1 - Part 2: Implementation Conformance Statement (ICS) proformas; English Version ETS 300391-2:1995
Edition 1996-02

Universal Personal Telecommunication (UPT) - Specification of the security architecture for UPT phase 1 - Part 3: Conformance Test Specification (CTS); English Version ETS 300391-3:1995
Edition 1996-02

Universal Personal Telecommunication (UPT) - UPT Phase 2 - Functional specification of the interface of a UPT Integrated Circuit Card (ICC) and Card Accepting Devices (CAD); UPT card accepting Dual Tone Multiple Frequency (DTMF) device (Endorsement of the English version EN 300477 V 1.2.2 (1999-05) as German version)
Edition 2000-10

Universal Personal Telecommunication (UPT) - UPT phase 2 - Functional specification of the interface of a UPT Integrated Circuit Card (ICC) and Card Accepting Devices (CADs); UPT card accepting Dual Tone Multiple Frequency (DTMF) device; Conformance test specification (Endorsement of the English version EN 301366 V 1.1.2 (1999-05) as German Standard)
Edition 2001-08

Terminal Equipment (TE) - Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE supporting the voice telephony service in wich network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling (Endorsement of the English version EN 301437 V 1.1.1 (1999-06) as German standard)
Edition 2000-10

Specification for dual-tone multi-frequency (DTMF) signalling protocol for social alarm systems
Edition 2009-04-30

Digital cellular telecommunications system (phase 2). Support of dual tone multi-frequency signalling (DTMF) via the GSM system (GSM 03.14)
Edition 1996-09-01

Universal Personal Telecommunication (UPT). Access devices. Dual Tone Multi Frequency (DTMF) sender for acoustical coupling to the microphone of a handset telephone
Edition 1998-04-01

Universal Personal Telecommunication (UPT) - UPT Phase 2 - Fonctional specification of the interface of a UPT Integrated Circuit Card (ICC) and Card Accepting Devices (CAD) - UPT card accepting Dual Tone Multiple Frequency (DTMF) device
Edition 2002-04-01