With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cueAANumber
cue AA Number
1.3.6.1.4.1.9.9.420.1.1.2.3
Auto Attendant (AA) pilot number. AA is the generic voicemail entrance to the company. (If you know your party's extension...)
Back to CISCO-UNITY-EXPRESS-MIB MIB page.
IPHost Network monitor allows you to monitor cueAANumber 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.