With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipStatsConnTCPInactiveTimeouts
Cisco Sip Stats Connection TCP Inactive Timeouts
1.3.6.1.4.1.9.9.152.1.2.10.7
This object reflects the total number of TCP connections that timed out due to inactivity since system startup.
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipStatsConnTCPInactiveTimeouts on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.