DIN ETS 300183:1993-09 Integrated Services Digital Network (ISDN); conference call, add-on (CONF) supplementary service; service description; English version ETS 300183:1992

标准编号：DIN ETS 300183:1993-09

英文标题：Integrated Services Digital Network (ISDN); conference call, add-on (CONF) supplementary service; service description; English version ETS 300183:1992

德文标题：ISDN; Dienstmerkmal "Konferenz"; Dienstbeschreibung; Englische Fassung ETS 300183:1992

发布日期：1993-09

DIN ETS 300183:1993-09 Integrated Services Digital Network (ISDN); conference call, add-on (CONF) supplementary service; service description; English version ETS 300183:1992

标准预览图