Skype for Business Clients, Skype for Business Web App, Skype for Business Phone, Front End Server (App Sharing MCU, RGS, Call Park A/V Conf etc), mediation Server, SBA, Exch UM. ICE endpoints – An ICE endpoint is anything that is involved in audio or video e.g.Relay/Traversal Using Relays around NAT (TURN) – TURN allows the audio or video traffic to be relayed/proxied by the Edge server to the client by providing the client relay addresses to send audio or video.a home based user sends a packet to edge server, which discovers the public IP address (a candidate), and returns it to the client. Reflective/Session Traversal Utilities for NAT (STUN) – STUN ‘reflects’ or returns the public NAT address to the Skype for Business client e.g.
Candidates – A list of possible IP addresses that could be used to establish an audio or video path.