Avaya SBC supports incoming calls from WebRTC-enabled web browsers to an internal Avaya Aura® network with SIP at the core. For example, a consumer can call an Avaya Aura® network by using a WebRTC-enabled browser from an external network. This WebRTC call is possible if the organization discloses the organization website to real-time multimedia calls and enables the browser with APIs for real-time multimedia communication. The signaling and media traverse the border edge of the enterprise network that contains the firewall and Avaya SBC in DMZ. In this scenario, Avaya SBC, Avaya Breeze® platform, and Avaya Aura® Media Server together function as the WebRTC-SIP gateway. The signaling and media must traverse the border edge of the enterprise network. Avaya SBC relays HTTP signaling by using the Reverse Proxy feature and the media relay by using TURN Server relay functionality. Additionally, for a WebRTC call, STUN binding, STUN reflexive address discovery, and ICE connectivity checks are required. All these aspects are implemented within the TURN/STUN server functionality built into Avaya SBC.

A WebRTC-enabled browser supports symmetric NAT and multiple IP addresses.

Avaya SBC supports TURN using SEND or DATA indication and TURN signaling on TCP, TLS and UDP.

For information about WebRTC performance and capacity, see Avaya WebRTC Connect Reference.