DTMF Issue in Chan_sip

Hi Everyone,

I have an asterisk server installed with Verison 17. And am facing the DTMF issue where I am able to see the dtmf event is received on the server but an asterisk has not identified that event.

below are the some of the observation . When am enabled the dtmfmethod=rfc2833 and dtmfmethod=auto DTMF is not working . But DTMF is recibibg in the server which is able to see in the pcapdump. bit dtmfmethod=inband is working which is reaching in asterisk.

What could be the issue here /.