With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCallActiveDestResPort
Cisco Sip Call Active Dest Res Port
1.3.6.1.4.1.9.9.995.1.1.3.1.14
This object reflects the signaling destination response port number.
Back to CISCO-SIP-CALLS-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCallActiveDestResPort 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.