Hello again,
I am trying to to send and receive DTMF from modem and phone (or embeded modem)using HyperTerminal on the PC. I can send DTMF of 0-9, #, *, A, B, C and D from HyperTerminal(internal modem) to a remote device. But, I don't know how to set-up the HyperTerminal to receive DTMF from...