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Assembly: Microsoft.Office.Interop.UccApi (in microsoft.office.interop.uccapi.dll)
Allows the user to create a signaling channel to send arbitrary SIP messages. In the current implementation the resultant IUccSignalingChannel object supports sending SERVICE request only. This interface can be obtained by calling QueryInterface on an IUccEndpoint instance.
Win32 COM/C++ Syntax
interface IUccSignalingChannelManager : IUnknown