Standards
[CURRENT]
NF Z82-136
; NF ETS 300136:1995-04-01
NF Z82-136
; NF ETS 300136:1995-04-01
Integrated Services Digital Network (ISDN). Closed user group (cug) supplementary service. Service description
Title (German)
INTEGRATED SERVICES DIGITAL NETWORK (ISDN). DIENSTMERKMAL GESCHLOSSENE BENUTZERGRUPPE. DIENSTBESCHREIBUNG