I am troubleshooting an issue with failed faxes to a RightFax server in my environment. This is for occasional failures from some outside analog fax machines from 1FB connections at their location. Call flow is as follows:
Inbound PRI --> AS5850 H323 Gateway --> VoIP to RightFax server. (session target on VOIP peer is the RightFax server IP)
The RightFax vendor is requesting a "debug fax relay t30 all-level-1" for a failed call. I have tested repeatedly but I am not getting any output from the debug. My only thought is that this debug is related to Cisco Fax Relay specifically which the 5850 does not support. Or is this debug not producing output because the leg to the RightFax server is VoIP only. Are either of these correct assumptions?
What other debugs would provide the T30 packet information for the vendor to review?
Thank you for your time.