Transmission and Multiplexing (TM) - Synchronous Digital Hierarchy (SDH) - Radio specific functional blocks for transmission of Mx STM-N; English version ETS 300635:19966
Edition 1997-09

Integrated Services Digital Network (ISDN); circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for speech information transfer; service description; english version ETS 300109:1992
Edition 1993-04

Electromagnetic compatibility and Radio spectrum Matters (ERM) - Enhanced Radio MEssage System (ERMES) - Part 1: General aspects; English version ETS 300133-1:1997
Edition 1998-12

Electromagnetic compatibility and Radio spectrum Matters (ERM) - Enhanced Radio MEssage System (ERMES) - Part 4: Air interface specification; English version ETS 300133-4:1997
Edition 1998-12

Methods of measurement for radio transmitters; part 3: wanted and unwanted modulation
Edition 1982-11