- Bronze, 100 points or more
Working on a fax over SIP trunk config and was wondering if anybody else has had any success? I am using NexVortex as my SIP Trunk provider, and have voice working in both directions on G.729r8 and G.711ulaw.
I (currently) cannot get incoming or outgoing fax to work on either codec (not really surprising on G.729), and have been doing a bit of searching. I rolled my test UC540 back to a very basic config with SIP trunk using G.711ulaw and was able to see that calls are indeed using this codec. In addition, I issued the following commands in the CLI:
voice service voip
fax protocol pass-through g711ulaw
I also saw that you are supposed to unregister the FXS ports with SCCP which I did by issuing the following commands in CLI:
no sccp ccm group 1
no sccp ccm 10.1.1.1 identifier 1
Am I also supposed to add the following command?
sccp ccm 10.1.1.1 identifier 1 version 4.1
Thanks in advance,