Core Issue
This problem may arise if the Unity server has two network interface cards (NICs) and both of them are enabled.
Resolution
Complete these steps to resolve the issue:
- Verify the IP address of Cisco Unity on the Cisco CallManager voice mail ports.
- Disable one of the network interface cards (NICs) on Cisco Unity.
- Check the IP address on the Cisco CallManager voice mail ports again.
- If the IP address does not change, re-assign the IP address to the right NIC card on Cisco Unity.
For more information and some troubleshooting issues related to voice mail, refer to these documents: