Voice Over IP libraries

I was curious if anyone could recommend a good way to integrate voip into a UE4 project, and any particular solutions they might have experience with. I’m very interested in first person style oculus rift interface so for interacting with others in a networked game I don’t see many options other than voice but I’d be interested in hearing opinions on that as well.

Most likely it’s not best solution ever, but there is topic about Coherent UI which is based on Chromium browser (Google Chrome) and have support WebRTC. It’s not the only UI solution based on browser so there can be other middleware support such features.

It’s can be good solution if you need implement VOIP rapidly with minimal programming because there is a lot of JavaScript libraries that allow to easier use of WebRTC.