The WebRTC client with an SIP stack can be registered and can send an invitation or give answers through an SIP server. The SIP server might or might not have the support for WebSocket. This categorization can be understood in two parts:
- This part consists of a WebRTC-compliant SIP server, and the caller and receiver are both on SIP over WebSocket (SIP WS to SIP WS). The WebRTC-compliant SIP server can belong to one of the following two categories:
- Using open public domains (such as SIP2SIP, JSSIP Tryit Server, or sipML5.org). This is demonstrated in the following diagram:
- Using locally hosted WebRTC-compatible SIP server (OfficeSIP). This ...