With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvCallActiveTable
Cisco Voice Call Active Table
1.3.6.1.4.1.9.9.63.1.3.1
This table is the voice extension to the call active table of IETF Dial Control MIB. It contains voice encapsulation call leg information that is derived from the statistics of lower layer telephony interface.
Back to CISCO-VOICE-DIAL-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor cvCallActiveTable 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.
