With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpmCASCfgBChanInUseForVoice
cpm CAS Cfg B Chan In Use For Voice
1.3.6.1.4.1.9.10.19.1.1.12
The number of configured CAS Channels that are currently occupied by Voice calls.
Back to CISCO-POP-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cpmCASCfgBChanInUseForVoice on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.
