With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCfgTimerComet
Cisco Sip Configure Timer Comet
1.3.6.1.4.1.9.9.152.1.1.2.6
This object specifies the time a user agent will wait for a final response before retransmitting the COMET (COndition MET).
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCfgTimerComet 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.