How Do I Emulate Picking Up the Phone and Dialing 9 With a Stand Alone Modem (no PC intervention after programming)
Posted on 2004-10-19
How do I to Setup a Modem to Auto answer without the modem tone, pause, then dial/send a long DTMF 9 and store these commands in one or more S-registers? S-registers may not be the what I want, I'm just fishing here.
What I want to accomplish is to program a modem's NVM, so that no PC is involved afterward, to answer an analog line without the customary modem tone, pause, then send a long 9. In effect, I want to emulate picking up the phone and pressing 9 with a modem instead of a handset.
I tried this with an answering machine, by recording and playing back "9" in my outgoing message. But the DTMF tone didn't register with the device listening at the other end for the tone. So I'm curious about this too. Is there a meaningful, distingishable difference between a recorded tone and one that is inline with the connection?