MGW error logs for Cpu utlization

Question

Dear All
We are using Cisco AS5400 as mgw, we often found during call peak hrs thsi mgw's showing error logs for cpu utlization. I have following questions in regards to thsi error.
1. why this error logs comes?
2. where & what we need to chcek? any hardware or IOS issue?
3. main and important thing whether during such error logs there is load on MGW and due to over cpu utlization call which attempt on MGW may failed? if yesy its failed with MGW end or failed from source end as abondan? or else if MGW disconnect then what is ISDN casue code.
we are using PGW in signalling or nailed mode.
Please help me with this
Regards
Amit--

Answer 1

Hi
Thanks to both of you
Here is log for Cpu utilization status during peak time as we see this error logs during peak time only
show proc cpu sorted | excl 0.00
CPU utilization for five seconds: 78%/36%; one minute: 73%; five minutes: 70
P
ID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
216   646931668 841788064        768 10.40%  9.81%  9.32%   0 CCH323_CT
211   723978128-1124958350          0  5.48%  5.51%  5.36%   0 VOIP_RTCP
  77   437021944-2113488726          0  4.91%  4.60%  4.53%   0 IP Input
  63   368724284 712553243        517  3.93%  3.96%  3.69%   0 ISDN
207   226701532 790289944        286  3.52%  2.89%  2.68%   0 VTSP
  61      262232    529665        495  2.03%  2.16%  1.04%   0 AFW_application_
206   319808168-1186847347          0  2.62%  2.27%  2.16%   0 DSMP
233       37460     57790        648  1.63%  1.10%  0.02%   0 AFW_application_
   3      293876    595003        493  1.63%  2.38%  2.06%   0 AFW_application_
205    70108356 455758882        153  1.06%  0.72%  0.74%   0 Resource Monitor
245   129219428 972383769        132  0.90%  0.93%  0.01%   0 ISDN L2 Process
208    43246508 321780241        134  0.57%  0.38%  0.37%   0 TSP
   4    35595820 258014603        137  0.57%  0.32%  0.32%   0 EDDRI_MAIN
  37   162961592  35154923       4635  0.40%  0.53%  0.56%   0 Per-Second Jobs
200    33113344 140290609        236  0.32%  0.56%  0.53%   0 CC-API_VCM
198    35068732   7031070       4987  0.16%  0.13%  0.13%   0 Compute load avg
175    15677516 144379255        108  0.16%  0.08%  0.08%   0 AAA SEND STOP EV
  33    16841100  32895103        511  0.16%  0.07%  0.06%   0 Net Background
  92     6052176 398473472         15  0.08%  0.04%  0.02%   0 RUDP Main Proces
On this MGW we have full E1 means 16 E1s & total calls we observed during this is around 458 to 482 active callslls.
our MGW IOS is 12.4(22) & we are not using Radius AAA.
Mpneers,
Can you tell me i can see few logs like callid rejected. means at that time that call rejected within MGW. so such failed call failed as what Abondon or what is ISDN cause code?
Please help me with this
Amit--