The Real-Time Communications (RTC) Client API is a set of COM interfaces that enables you to build applications for making PC-PC, PC-phone, or phone-phone calls or creating instant messaging (IM) sessions over the Internet. Both voice and video calls can be established on PC-PC calls.

There are three simple steps in creating an Interop Assembly for the RTC Client SDK binaries. The Interop assembly can be used by C# or VB.NET managed code. I have assumed that you have installed the RTC Client API SDK 1.3

(1) Download and install the Microsoft Platform SDK

http://www.microsoft.com/msdownload/platformsdk/sdkupdate/default.htm

(2) Generate the type library

"midl /I "C:\Program Files\Microsoft Platform SDK\Include" rtccore.idl"

(3) Generate the interop assembly for any version of the .NET framework

"tlbimp rtccore.tlb /out:Interop.RTCCore.dll /namespace:RTCCore /sysarray"

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