To delete the voice-mail pilot number, perform these procedures. You cannot delete the default or the No Voice Mail profile numbers.
If you choose the default or the No Voice Mail pilot numbers, the Delete button does not display.
You cannot delete voice-mail pilot numbers that a voice-mail profile uses. To find out which voice-mail profiles are using the voice-mail pilot, in the Voice Mail Pilot Configuration window, choose Dependency Records from the Related Links drop-down list box and click Go. If the dependency records are not enabled for the system, the dependency records summary window displays a message. If you try to delete a voice-mail pilot that is in use,
Cisco Unified Communications Manager displays a message. Before deleting a voice-mail pilot that is currently in use, you must perform either or both of the following tasks:
Assign a different voice-mail pilot to any voice-mail profiles that are using the voice-mail pilot that you want to delete.
Delete the voice-mail profiles that are using the voice-mail pilot that you want to delete.
If a voice-mail profile uses this voice-mail pilot number, a message displays and indicates the number of voice-mail profiles that use this voice-mail pilot number.