NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN ETS 300477 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ETS 300083 | 1993-03 | Integrated Services Digital Network (ISDN); circuit mode structured bearer service category usable for speech information transfer; terminal requirements necessary for end-to-end compatibility More |
| ETS 300391-1 | 1995-08 | Universal Personal Telecommunication (UPT) - Specification of the security architecture for UPT phase 1 - Part 1: Specification More |
| I-ETS 300380 | 1995-03 | Universal Personal Telecommunication (UPT) - Access devices - Dual Tone Multi Frequency (DTMF) sender for acoustical coupling to the microphone of a handset telephone More |
