LST EN 300 938 V6.1.1-2007 Digital cellular telecommunications system (Phase 2+) (GSM);Mobile Station - Base Station System (MS - BSS) interface;Data Link (DL) layer specification (GSM 04.06 version 6.1.1 Release 1997)
2007LST EN 300 938 V6.1.1-2007 Digital cellular telecommunications system (Phase 2+) (GSM);Mobile Station - Base Station System (MS - BSS) interface;Data Link (DL) layer specification (GSM 04.06 version 6.1.1 Release 1997)