Jeff,
This is actually a pretty common mistake. The Cisco integration document, I believe, states the VM-device-id as CiscoUM-VI# but Unity usually configures as CiscoUM1-VI#. Verify in UTIM (Unity Integration Manager) that the voicemail ids are like your ephone below.
ephone 60
device-security-mode none
vm-device-id CiscoUM-VI1
!This must match Unity prefix exactly.
button 1:60
Please rate any helpful posts
Thanks
Fred