With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoUnityPortsOutbound
cisco Unity Ports Outbound
1.3.6.1.4.1.9.9.385.1.2.6
The total number of ports that are designated for outbound calls (includes message notification, MWI dialout and AMIS delivery).
Back to CISCO-UNITY-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoUnityPortsOutbound 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.