Standards
[CURRENT]
NF Z83-503
; NF ETS 300503:1995-12-01
NF Z83-503
; NF ETS 300503:1995-12-01
European digital cellular telecommunications system (phase 2). General on supplementary services (GSM 02.04)
Title (German)
EUROPAEISCHES ZELLULARES DIGITALES FUNKKOMMUNIKATIONSSYSTEM (PHASE 2). ALLGEMEINES UEBER ZUSAETZLICHE DIENSTE. (GSM 02.04)