With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCfgRetryReliableRsp
Cisco Sip Configure Retry Reliable Rsp
1.3.6.1.4.1.9.9.152.1.1.3.8
This object specifies the number of times a user agent will retry sending a reliable response.
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCfgRetryReliableRsp 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.