With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmInActiveGateways
Cisco Call Manager In Active Gateways
1.3.6.1.4.1.9.9.156.1.5.4
The number of gateways that are registered with the Call Manager but have lost contact with the CallManager. The gateways are said to have lost contact with the CallManager if the CallManager does not receive any keepalives.
Back to CISCO-CCM-MIB MIB page.
IPHost Network monitor allows you to monitor ccmInActiveGateways 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.
