Gert Doering <gert@greenie.muc.de> wrote: > As far as I know, the current voice modem AT command sets do not allow > simultaneous send and receive (DTMF works, but that's all). > Marc? Why do you ask me ? :) To my knowledge, most modems do not support bidirectionnal voice operation. Even if they would, mgetty doesn't support it. PS: I am no expert, alas.