Can you try resetting the MGCP gateway with a no mgcp, mgcp, if thats not helping please provide the following debugs and show commands along with CCM traces from CMO2 and CM01for a failed call.
show voice port summary
show voice call summary
debug vpm signal
debug voip ccapi inout
debug mgcp packet
Please rate if you find this helpful.
Regards,
Aeby
Please rate if you find this helpful.
Regards,
Aeby