DIN ETS 300263:1994-11 Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description; English version ETS 300263:1994

标准编号：DIN ETS 300263:1994-11

英文标题：Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description; English version ETS 300263:1994

德文标题：ISDN - Teledienst "7-kHz-Telefondienst" - Dienstbeschreibung; Englische Fassung ETS 300263:1994

发布日期：1994-11

标准预览图