With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoUnityPortsInboundActive
cisco Unity Ports Inbound Active
1.3.6.1.4.1.9.9.385.1.2.5
The number of inbound ports that are currently active with calls.
Back to CISCO-UNITY-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoUnityPortsInboundActive on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.
