I have a 2851 GW, integrated with CCM 6.0
we have a few fax machines attached to ATAs and the main fax number attached to an FXS port on the GW. however most of the times when somebody sends a fax, the fax receipt is truncated and it happens randomly.
we had configured MGCP first and we changed yesterday evening to H.323 to have more resources to troubleshoot this issue.
I have a ticket open with the TAC, but it has been useless, we need to resolve this asap, because the business impact is huge
thank you very much for your help
Please send output of "show controllers T1". If you have slips, chances are you are missing the required network-clock-participate and select commands.