The interest in integrating real-time and realtime multimedia communication features into IP networks and its applications, the web including, started a development effort, which brings several new communication technologies. These technologies are influencing many aspects of our lives now, education not excluding. The Session Initiation Protocol (SIP) and the Web Real-Time Communication (WebRTC) belongs among the most important. Both of them allow us, the teachers, communicate with our students through audio and video. In this paper we provide a technological overview describing the aspects of integration of these two important internet technologies, SIP with WebRTC. Both together used to easily extend any web based e-learning or collaboration environment for unlimited communication experiences.