DIN ETS 300056/A1:1997-10 Integrated Services Digital Network (ISDN) - Call Waiting (CW) supplementary service - Service description; English version ETS 300056:1991/A1:1996

标准编号：DIN ETS 300056/A1:1997-10

英文标题：Integrated Services Digital Network (ISDN) - Call Waiting (CW) supplementary service - Service description; English version ETS 300056:1991/A1:1996

德文标题：ISDN - Dienstmerkmal Anklopfen - Dienstbeschreibung; Englische Fassung ETS 300056:1991/A1:1996

发布日期：1997-10

DIN ETS 300056/A1:1997-10 Integrated Services Digital Network (ISDN) - Call Waiting (CW) supplementary service - Service description; English version ETS 300056:1991/A1:1996

标准预览图