DIN ETS 300111:1993-04 Integrated Services Digital Network (ISDN); telephony 3,1 kHz teleservice; service description; english version ETS 300111:1992

标准编号：DIN ETS 300111:1993-04

英文标题：Integrated Services Digital Network (ISDN); telephony 3,1 kHz teleservice; service description; english version ETS 300111:1992

德文标题：ISDN; 3,1-kHz-Telefondienst; Dienstbeschreibung; Englische Fassung ETS 300111:1992

发布日期：1993-04

标准预览图