Digital cellular telecommunications system (Phase 2+); Mobile Station - Base Station System (MS - BSS) interface; Data Link (DL) layer specification (GSM 04.06 version 6.2.1 Release 1997)
gültig ab
2024-10-01
internat. Übereinstimmung
ETS 300 938 Ed.5 (2000) , ident ETSI EN 300 938 V6.2.1 (2000 09) , ident