desnoyer@Apple.COM (Peter Desnoyers) (11/03/88)
I am trying to find an answer to the following question - neither AT&T's Q.931 spec nor an ANSI draft I have give any helpful information. How do you do keypad terminal to terminal signalling in ISDN? In other words, what happens when you press a key on a voice-only ISDN phone during an active call? If you have one of the few ISDN lines Illinois Bell has installed, and you dial an 800 number on the public network, what happens when you hear "press 1 if you have a touch-tone phone"? If you can use this service, where is the DTMF tone produced? The terminal? The local switch or the interworking point? If so, what Q.931 message conveys the keypad information? Will this message be carried end-to-end within an ISDN to allow the same signalling without generating DTMF? [if you post, please e-mail to remind me to read it.] enquiring minds want to know... Peter Desnoyers