With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCfgTimerExpires
Cisco Sip Configure Timer Expires
1.3.6.1.4.1.9.9.152.1.1.2.2
This object specifies the time a user agent will wait to receive a final response to a INVITE before cancelling the transaction.
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCfgTimerExpires on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.