Access and Terminals (AT) - 34 MBit/s and 140 Mbit/s digital leased lines (D34U, D34S, D140U and D140S) - Network interface presentation (Endorsement of the English version EN 300686 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 34 MBit/s digital leased lines (D34U and D34S) - Connection characteristics (Endorsement of the English version EN 300687 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 34 Mbit/s digital leased lines (D34U and D34S) - Terminal equipment interface (Endorsement of the English version EN 300689 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 140 Mbit/s digital leased lines (D140U and D140S) - Terminal equipment interface; (Endorsement of the English version EN 300690 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - Multiple 64 kbit/s digital unrestricted leased lines with octet integrity presented at a structured 2048 kbit/s interface at either or both ends (D64M) - Connection characteristics and network interface presentation (Endorsement of the English version EN 300766 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 140 MBit/s digital leased lines (D140U and D140S) - Connection characteristics (Endorsement of the English version EN 300688 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Digital Enhanced Cordless Telecommunications (DECT) - Global System for Mobile Communications (GSM); DECT/GSM interworking profile (IWP) - General description of service requirements; Functional capabilities and information flows (Endorsement of the English version EN 300466 V 1.2.1 (2001-01) as German Standard)
Edition 2002-05

Digital Enhanced Cordless Telecommunications (DECT) - Global System for Mobile communications (GSM); DECT/GSM interworking profile (IWP) - Access and mapping (Protocol/procedure description for 3,1 kHz speech service) (Endorsement of the English version EN 300370 V 1.3.1 (2001-01) as German standard)
Edition 2002-05

Integrated Services Digital Network (ISDN) - Outgoing Call Barring-Fixed (OCB-F) supplementary service - Service description (Endorsement of the English version EN 301082 V 2.1.1 (2000-07) as German standard)
Edition 2002-07

Integrated Services Digital Network (ISDN) - Completion of Calls to Busy Subscriber (CCBS) supplementary service - Service description (Endorsement of the English version EN 300357 V 1.2.1 (2001-05) as German standard)
Edition 2002-07