Norm
[AKTUELL]
OENORM EN 300918 V 7.1.2
OENORM EN 300918 V 7.1.2
Digital cellular telecommunications system (Phase 2+) - General on supplementary services (GSM 02.04 version 7.1.2 Release 1998)
Titel (englisch)
Digital cellular telecommunications system (Phase 2+) - General on supplementary services (GSM 02.04 version 7.1.2 Release 1998)