DIN ETS 300136:1992-12 Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; service description; english version ETS 300136:1992

标准编号：DIN ETS 300136:1992-12

英文标题：Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; service description; english version ETS 300136:1992

德文标题：ISDN; Dienstmerkmal Geschlossene Benutzergruppe; Dienstbeschreibung; Englische Fassung ETS 300136:1992

发布日期：1992-12

标准预览图