We have a central site VM only deployment for 20K users and have 5 x Unity 5 VM failover pairs in the central location.
Is RTP and signalling encryption supported with Unity - we believe it is but just want to confirm(any caveats, gotchya's, experiences would be appreciated)
Assuming you're using Call Manager, Unity can take advanatage of security features such as signaling/device authentication and signaling/medial encryption. One point to consider is that if you have devices between the phone and Unity such as gateways or transcoders that are not performing encryption, the stream will not be encrypted. Take a look at the following link.
Hope this helps. If so, please rate the post.