Connect to the unit with programming tool:
Viking IP Programming -- “Phone Settings” tab
OR
Viking Device Manager -- "Speaker Settings" section
ENABLE “In-Band Audio Call Progress”
Make a test call once the unit reboots.
The Viking IP phone is trying to dial a phone number outside the phone system and hangs up after one ring Print
Modified on: Thu, 7 May, 2026 at 11:00 AM
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