With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmVoiceMailDeviceDirNumEntry
Cisco Call Manager Voice Mail Device Directory Number Entry
1.3.6.1.4.1.9.9.156.1.12.2.1
An entry (conceptual row) in the VoiceMailDirNum Table, has the associated directory number for a Voice Messaging Device.
Back to CISCO-CCM-MIB MIB page.
IPHost Network monitor allows you to monitor ccmVoiceMailDeviceDirNumEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.
