CSN ETS 300 096-1994 Integrated Services Digital Network (ISDN). Connected Line Identification Presentaion (COLP) and Connected Line Identification Restriction (COLR) supplementary services. Functional Capabilities and information flows
1994CSN ETS 300 096-1994 Integrated Services Digital Network (ISDN). Connected Line Identification Presentaion (COLP) and Connected Line Identification Restriction (COLR) supplementary services. Functional Capabilities and information flows