From time to time I have callers who say they cannot get the IVR destination that they want. They will tell me that if they press 3, which is a proper destination, the system says that is not a valid destination or invalid destination or somthing along those lines.
So I have been doing a bunch of reading and get conflicting or confusing information. I think this is the way it should be set.
If it is a zap channel then the dtmfmode should = inband. Most others should be rfc2833.
So in zapata.conf an entery of dtmfmode=inband should be added. Then on IP phones and sip or iax trunks it should be rfc2833. If an anolgue phone is connected to a FXS port then it should in the extensions have dtmfmode set to inband as well.
Is this correct?
It is becoming annoying when my shop forman comes in and says there is a call in park because the user just started pressing buttons till someone would answer.