With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vmVoiceVlanCdpVerifyEnable
vm Voice Vlan Cdp Verify Enable
1.3.6.1.4.1.9.9.68.1.5.1.1.2
Enable or Disable the feature of CDP message verification of voice VLANs. true - The voice VLAN vmVoiceVlan is enabled only after CDP messages are received from the IP phone. false - The voice VLAN vmVoiceVlan is enabled as soon as the IP phone interface is up. There is no verification needed from CDP messages from the IP phone.
Back to CISCO-VLAN-MEMBERSHIP-MIB MIB page.
IPHost Network monitor allows you to monitor vmVoiceVlanCdpVerifyEnable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.