OnFirstCallStarting Method
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VoipCallInProgressAgent.OnFirstCallStarting Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Called when the app’s first VoIP call becomes active.

Namespace:  Microsoft.Phone.Networking.Voip
Assembly:  Microsoft.Phone (in Microsoft.Phone.dll)

'Declaration
Protected MustOverride Sub OnFirstCallStarting

Windows Phone OS

Supported in: 8.1, 8.0

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