You didn't say what kind of voicemail system(s) is involved so I'll assume Cisco Unity. If so, you could launch Data Link Explorer from ToolsDepot and try this query in the Query Builder:
WHERE MwiExtension = '1234'
replacing the 1234 with the phone DN. If the issue is caused by a Subscriber with misconfigured MWI, this might give you the alias of that Subscriber.
However, the default for everyone should be MwiExtension = 'X' which ensures uniqueness. So unless you've had an admin in there tweaking folks MWI settings, then I wouldn't expect this to be the source of your issue. If you need to dig deeper, the Unity Troubleshooting Guides have fairly good chapters on MWI...
If the phone has a second extension on it enabled for voicemail, plus the CallManager set lamp policy is configured for "Light and Prompt" on the second line, this could also cause the behavior you are seeing. The default is only to light and prompt for the primary extension.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.