Skype for Business – Three-way calling

Based on the questions I’ve received, it seems like Skype for Business is a pretty big deal.  So, let’s take a look at another question I recently received with regard to the Citrix RealTime Optimization Pack for Skype for Business:

How does this work with 3-way calling?

With Skype for Business, in order to do a 3-way (or more) conference call, you need to have the Skype for Business Audio-Video Conferencing Server implemented within your Skype deployment. After initiating a call by communicating over SIP to the Skype Server, all parties within the call have their voice/video (SRTP) pass through the Conferencing Server.

In a Native RDS/VDI deployment that does NOT include the Citrix RealTime Optimization Pack for Skype for Business, the media must traverse additional network hops (For simplicity, I removed the Skype for Business server that is still required for initializing the session.)


As you can see, for those users accessing the environment with a virtual desktop, the Skype for Business client gets installed within the virtual desktop (VDA).  Although this deployment model works, it does put more strain on your RDS/VDI infrastructure as we explained in the previous blog.

Now, compare the SRTP path when we implement the Citrix RealTime Optimization Pack for Skype for Business.


From the user perspective, the voice and video data follows a much more direct route, mimicking that of the traditional PC experience. And the impact to the RDS/VDI infrastructure is significantly reduced as the media is processed on the end points.

Skype for Business Blogs

Daniel (Follow on Twitter @djfeller)
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