Knowledge BaseAudian Phone ArticlesTroubleshootingPhone TroubleshootingvoiceUpdated 2/4/2026Troubleshoot - Voicemail Button not workingDescription: This article will show you how to do the following.Troubleshoot non-functioning voicemail buttonTroubleshoot dead air when accessing VM BoxMethods:Main # Not SetSIP phones require a Main Number to be set in the SBPX application before the Voicemail button will function properly.Login to the Audian Portal.Click the 9 square button at the top right of the screen.Click on the Smart PBX app.Click on Main Number on the left.Click on Main Company Numbers.Click on Add from Spare Numbers.Check the box next to the desired numbers, and then click Add selected numbers.VM Box Dead AirLogin to the Audian Portal.Click the 9 square button at the top right of the screen.Click on the Smart PBX app.Click Voicemail Boxes on the left.Click the Edit icon for the VM box having problems.Click Advanced and then Options.Ensure that the Announce Only Mode is NOT checked.Click Save Changes. Migrated from Confluence on 2026-02-03 Original Confluence Article