A DID on our fusionpbx system is forwarded to an external voicemail system. When we enter digits they are malformed at the endpoint and the caller cannot navigate the IVR.
It seems the carrier is sending a mix of rfc2833 info and/or inband and the voicemail IVR system appears to be listening to both inband and RFC2833 tones which is causing the issue. I currently use "action block_dtmf peer" in the dialplan to make it work but I am wondering if there is a better way to ignore the double tones or filter out the second signal in the outbound dialplan? Liberal_DTMF is already off in internal sip settings and deduplicate_dtmf did not work.
It seems the carrier is sending a mix of rfc2833 info and/or inband and the voicemail IVR system appears to be listening to both inband and RFC2833 tones which is causing the issue. I currently use "action block_dtmf peer" in the dialplan to make it work but I am wondering if there is a better way to ignore the double tones or filter out the second signal in the outbound dialplan? Liberal_DTMF is already off in internal sip settings and deduplicate_dtmf did not work.
