I have CME 7.1.
I connected one fax to ATA SCCP ( I think the version for ATA is 3.1)
the problem when we need to send fax the other faxes ringing but we were not able to send the fax
CME uses FXO port to send faxes. I did the following configuration:
connection plar opx 1500
dial-peer cor custom
dial-peer cor list Call-FAX
dial-peer voice 116 pots
corlist outgoing Call-FAX
description FAX calls
fax rate disable
corlist incoming Call-FAX
Recommend you use an FXS port for fax.
ATA is source of trouble for faxes.
I know that but unfortuntly I do not have any FXS in this project.
shall I use h323 ATA frameware rather than SCCP.
You can try, then follow the guide "troubleshooting ata for fax" from the search box.
I have also found that the following settings on the Fax helped if connected to an ATA:
send/recieve rate 9600baud