With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwspOutCallEstabs
cwsp Out Call Estabs
1.3.6.1.4.1.351.140.1.2.5.1.1.11
This object shows the number of outgoing Signaling messages (Connect and Add Party Ack) which mark the call being established on this interface
Back to CISCO-WAN-SVC-MIB MIB page.
IPHost Network monitor allows you to monitor cwspOutCallEstabs 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.