set Inband DTMF mode as default

 

 

 Hello everybody ,

 

Hope you're doing fine, We're working on an scenario where there are several SIP-PBX clients that have been configured to send DTMF mode = AUTO; some of them are having problems to send dtmf unles they force it to send in inband mode.

 

What we are trying to acomplish here is that from the SBC make the PBX (having DTMF=Auto parameter configured) to prefer to send DTMF in INBAND mode.

 

Regarding the AUTO option configured, I understand that this mode uses rfc2833 by default, but will switch to inband DTMF tones if the remote side does not indicate support of rfc2833.