Looking for some help on to determine if changing the fax configuration on our network will help solve some problems we are having at our remote offices with faxing. Whenever a fax comes in or out of our network I see the codec that it uses is g711ulaw from the "sh voice call summary" command.
The remote offices are complaining faxing issues like only half a page going through or the fax not going through at all. So would forcing T38 help this at all?
Here is the current set up. All voice commands are configured on the CUCM server. However I have enabled T38 for faxing on the CUCM server but the fax still comes through as G711ulaw. Do i have to create any dial-peers that specify T38 on all the voice gateways? If I disable T38 from the CUCM gateway config page then I get a line in the 2851 that says mgcp fax t38 inhibit.
2x T1 for voice
Cisco 2851 ISR
Cat 6509 ---------- CUCM 7.0
I've attached a screen shot of the cucm gateway config and the configs fo the 2851 and vg224.