With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipCallActiveDestReqPort
Cisco Sip Call Active Dest Req Port
1.3.6.1.4.1.9.9.995.1.1.3.1.11
This object reflects the signaling destination request port number.
Back to CISCO-SIP-CALLS-MIB MIB page.
IPHost Network monitor allows you to monitor cSipCallActiveDestReqPort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.