ETSI PRETS 300 133-2-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 2: Service Aspects Second Edition
1997ETSI ETS 300 133-2-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 2: Service Aspects (Second Edition)
1996ETSI PRETS 300 133-2-1996 Radio Equipment and Systems (RES); European Radio MEssage System (ERMES); Part 2: Service Aspects
1991ETSI PRETS 300 133-2-1991 Paging Systems; European Radio Message System (ERMES) Part 2: Service Aspects
ETSI PRETS 300 133-2-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 2: Service Aspects Second Edition was changed to ETSI ETS 300 133-2-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 2: Service Aspects (Second Edition).