UNE-TBR 9 Ed1:2022 European digital cellular telecommunications system;Attachment requirements for Global System for Mobile communications (GSM) mobile stations;Telephony (Endorsed by Asociación Española de Normalización in February of 2022.)
2022UNE-TBR 9 Ed1:2022 European digital cellular telecommunications system;Attachment requirements for Global System for Mobile communications (GSM) mobile stations;Telephony (Endorsed by Asociación Española de Normalización in February of 2022.)
1999UNE-TBR 9:1999 EUROPEAN DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM. ATTACHMENT REQUIREMENTS FOR GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS (GSM) MOBILE STATIONS. TELEPHONY.