With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmConnectionIndex
cm Connection Index
1.3.6.1.4.1.7505.1.1.16.1.2
The index of this connection; each port can have connections to several Cisco CallManagers, with one active connection and the rest operating in standby mode.
Back to CALISTA-DPA-MIB MIB page.
IPHost Network monitor allows you to monitor cmConnectionIndex 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.