Hi there,
I had a look at the show tech and all seems ok, but the processor on that sort of load should be no where near what it is!!
I had a look on your software revision and it's a bug I'm afraid. Have a look at this link for more details:-
CSCse63494
Headline: RTP: invalid RTCP packet may cause CPUHOG in VOIP_RTCP
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCse63494
There seem to be one or two issues with the VOIP_RTCP in that revision of code.
However, it's affecting quite a lot of versions of the 12.4 code (if not all of them) and is currently at a Severity 1 in the bug tool - which is as bad as it gets, but they'll be working hard to get a fix.
I'd suggest raising this with TAC so that they can advise you on the best steps to take or the version of code that would fix the issues - it might even be worth dropping down to 12.3(14). Raise it with TAC - they'll give you the best advice here.
Hope this helps,
LH
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