Standards
[CURRENT]
NF Z82-057
; NF ETS 300057:1994-12-01
NF Z82-057
; NF ETS 300057:1994-12-01
Integrated Services Digital Network (ISDN). Call waiting (cw) supplementary service. Functional capabilities and information flows
Title (German)
INTEGRATED SERVICES DIGITAL NETWORK (ISDN). DIENSTMERKMAL ANKLOPFEN. FUNKTIONELLE FAEHIGKEITEN UND INFORMATIONSFLUESSE