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Established Calls to Meeting places through CUCM SIP Trunk drop after few minutes in peak hours only

Hi All,

This is the my first discussion for help in Cisco support.   One of my client facing Meeting place call drop issue during peak hours only. We recently Migrated from MGCP to SIP, and after that only this issue start happening.

Call flow:

Calling User Site - SIP Proxy Server -  Called Site  VG ---- Called Site  B2B VG ---- SIP Trunk ---- Call Manager ---- H.323 Gateway (to the IP address of the SG Meeting Place)

I have checked all the setting, bud didn't find about issue.  only suspecting issue in the following trace

04/18/2012 16:31:02.219 CCM|//SIP/SIPUdp/wait_UdpDataInd: Incoming SIP UDP message size 573 from 9.187.12.13:[51378]:

BYE sip:69194044@9.187.57.72:5060 SIP/2.0

Via: SIP/2.0/UDP 9.187.12.13:5060;x-route-tag="tgrp:tg_voice_pri";branch=z9hG4bK123BEA0

From: <sip:2521@9.187.12.13>;tag=51AFA80-14C

To: <sip:69194044@9.187.57.72>;tag=d4ce8840-41ab-487d-9111-1e005a785228-49945777

Date: Wed, 18 Apr 2012 08:30:15 GMT

Call-ID: 5D656455-886311E1-B7C0DAE7-DD439BAF@9.187.12.13

User-Agent: Cisco-SIPGateway/IOS-12.x

Max-Forwards: 70

Timestamp: 1334737862

CSeq: 102 BYE

Reason: Q.850;cause=102 what this code ?

P-RTP-Stat: PS=22379,OS=3569564,PR=65891,OR=10477529,PL=0,JI=0,LA=0,DU=1846

Content-Length: 0

If you require further information please let me know.

Thank you.

Regards,

Rakesh Sabherwal

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