Guys,
Does anyone have a good way to track down and resolve issues with DTMF over SIP Trunks on a MiVoice Business Express?
The system doesn't have this issue with all Auto Attendants and it isn't always the same button press. The MiVB-X is using its internal MBG to talk to an SBC on the same VLAN and for the most part I have not been able to replicate the issue myself, but it is happening enough with the customer that they want us to look into it as they see it as a problem.
I had them try to call our test number it works fine every time from their phone as well as any phone on the system. I know that the DTMF Payload is 101, but I can't tell whether or not it is set for RFC-2833 or whether it is in-band or out-of-band. I am at a total loss as to how to proceed on a 3300 with this issue.
Thanks,
TE