ETSI PRETS 300 133-7-1997 Electromagnetic Compatiblity and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 7: Operation and Maintenance Aspects Second Edition
1997ETSI ETS 300 133-7-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 7: Operation and Maintenance Aspects (Second Edition)
1996ETSI PRETS 300 133-7-1996 Radio Equipment and Systems (RES); European Radio MEssage System (ERMES); Part 7: Operation and Maintenance Aspects Second Edition
1992ETSI PRETS 300 133-7-1992 Paging Systems (PS); European Radio Message System (ERMES) Part 7: Operations and Maintenance Aspects
1991ETSI PRETS 300 133-7-1991 Paging Systems; European Radio Message System (ERMES) Part 7: Operations and Maintenance Aspects (DE/PS-3001-7)
ETSI PRETS 300 133-7-1997 Electromagnetic Compatiblity and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 7: Operation and Maintenance Aspects Second Edition was changed to ETSI ETS 300 133-7-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 7: Operation and Maintenance Aspects (Second Edition).