What are the server requirements in terms of vCPU and vDISK instead of physical servers?

Fusion Web Gateway is used for WebRTC signaling providing conversion between HTTP & SIP. The Web Gateway is deployed and configured in a high-availability (HA) configuration. 

Fusion Media Brokers provide port muxing, encrypted media handling (sRTP/DTLS), media proxying (ex. for H.264 only calls) and transcoding of audio and video. Media Brokers with transcoding will concurrently transcode video (VP8/browser → H.264) and proxy video/audio calls.  

 For these two components deployed on VMware vSphere:

* Transcoding between VP8 and H.264 performance varies depending on video resolution, frame rate, bitrate as well as server type, virtualization or bare metal OS installs, processors and audio codecs.  A typical server will handle approximately 2-3 concurrent sessions per vCPU and proxy 10-20 media sessions per vCPU bandwidth permitting.