I want to do the SIP phone conference in asterisk .
Caller A is speaking with B . “B” choosing the second line and calling to IVR then making the Caller A in the conference.The problem is whatever the input is given by the “B” , the IVR is able to read the DTMF. But the IVR is not able to read the DTMF which is given by the Caller A . I suspect that asterisk is not broadcasting the DTMF to all the channels which are there in the conference.
Is there any way to achieve this