Integrated Services Digital Network (ISDN); Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300267-5 V 1.2.6 (1999-09) as German standard)
Edition 2001-02

Integrated Services Digital Network (ISDN); Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS 1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300267-1 V 1.3.2 (2000-05) as German standard)
Edition 2001-02

Integrated Services Digital Network (ISDN); Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300267-2 V 1.3.2 (2000-05) as German standard)
Edition 2001-02

Integrated Services Digital Network (ISDN); Telephony 7 kHz, videotelephony, audiographic conference and videotelephony teleservices - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version EN 300267-6 V 1.2.6 (2000-06) as German standard)
Edition 2001-02

Integrated Services Digital Network (ISDN) - Remote Control (RC) service - Service description (Endorsement of the English version EN 301691 V 1.1.1 (2001-02) as German Standard)
Edition 2001-10

Digital Enhanced Cordless Telecommunications (DECT) - Low Rate Messaging Service (LRMS) including Short Messaging Service (SMS) (Endorsement of the English version EN 300757 V1.5.1 (2004-09) as German standard)
Edition 2005-04

Internet Content and communications filtering software and services; German version CEN/TS 16080:2013
Edition 2014-03

Integrated Services Digital Network (ISDN); Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300267-4 V 1.2.4 (2000-06) as German standard)
Edition 2001-02

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Short message service supplementary service [ISO/IEC 21989 (2002) modified] (Endorsement of the English version EN 301990 V1.1.1 (2003-06) as German standard)
Edition 2004-03

Integrated Services Digital Network (ISDN); Telephony 7 kHz videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user (Endorsement of the English version EN 300267-3 V 1.2.6 (1999-08) as German standard)
Edition 2001-02