There is Cisco router 2851 with CME 7.1 on it with PVDM2-48 (the result of show version and show inventory is attached).
There is SIP trunk connected to this router. Also this router serves for 50 SIP phones Linksys SPA922/Cisco SPA504G. The transcoder is configured on the router for detecting dtmf signals from rtp flow (only for inbound calls; provider sends inbound dtmf signals in inband g711). Outbount calls are not processed by transcoder.
Some times (a few times a day) I see the following warning:
*Aug 13 14:56:53.479: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (97/100).
Aug 13 17:59:22 192.168.90.2 4830: Call (callID=26073) is rejected.
Also debugs and partial config are attached.
I don't understand what is a cause of my problem.
P. S. Sorry for my english