There is an option in the SIP account setting called "Voicemail URI".
In all other SIP clients I have used, this field is used to indicate what
extension to dial when the phone wants to access voicemail.
However no matter what I enter in that field, when I click the call
voicemail button under the "Voicemail" section in the interface it instead
calls the user's extension.
My extension: 641
Voicemail URI: 4000
Click the voicemail button it dials 641 rather than 4000.
Does this qualify as a bug?