With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmgwPhysicalIndex
cmgw Physical Index
1.3.6.1.4.1.9.9.324.1.1.1.1.3
This object represents the entPhysicalIndex of the card in which media gateway is running. It will contain value 0 if the entPhysicalIndex value is not available or not applicable
Back to CISCO-MEDIA-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cmgwPhysicalIndex 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.