Standards
[CURRENT]
NF Z82-257
; NF EN 300257:2004-05-01
NF Z82-257
; NF EN 300257:2004-05-01
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call diversion supplementary service (V1.3.1)
Title (German)
Private diensteintegrierended Netze (PISN) - Zeichengabe zwischen telekommunikationsanlagen - Dienstmerkmate (V1.3.1)