With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmGatekeeperIndex
Cisco Call Manager Gatekeeper Index
1.3.6.1.4.1.9.9.156.1.7.1.1.1
An arbitrary integer, selected by the local CUCM, which identifies a Gatekeeper entry in the table.
Back to CISCO-CCM-MIB MIB page.
IPHost Network monitor allows you to monitor ccmGatekeeperIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.