With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCfgRetryResponse
Cisco Sip Configure Retry Response
1.3.6.1.4.1.9.9.152.1.1.3.5
This object specifies the number of times a user agent will retry sending a Response and expecting a ACK.
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCfgRetryResponse 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.