NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Standards
[CURRENT]
DIN ETS 300263/A1
DIN ETS 300263/A1
Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description; English version ETS 300263:1994/A1:1996
Title (German)
ISDN - Teledienst "7-kHz-Telefondienst" - Dienstbeschreibung; Englische Fassung ETS 300263:1994/A1:1996