Hi,<br><br>my channel to our card uses R2D/MFC (built in, not unicall) and I have the followinf scenario (Asterisk 1.2.13) :<br><br>E1-A -> connected to PSTN<br>E1-B -> connected to PBX<br><br>My user starts a call from PBX -> E1-B, then the channel allocates one port of E1-A to dial to PSTN. When the E1-A receives answer, Asterisk bridges both channel and audio can be listen normally.
<br><br>This works well, but I'm having some requirements to allow the user to listen the PSTN tones (ringback, busy, unavailable messages, etc). <br><br>My initial idea is to send to Asterisk a AST_CONTROL_ANSWER just after "dial", then Asterisk will bridge both channels and the user will be listen PSTN's tones.
<br><br>Any sugestion?<br><br>Best Regards<br><br><br>Paulo Garcia<br><br> <br><br><br>