The Telepathy project is building a unified framework for many different kinds of real-time communications. It uses the D-Bus messaging system to provide a simple interface for client applications.
 
Empathy is working on creating a nice user interface based on the Telepathy backend. This project aims to provide to GNOME its own Instant Messenger featuring voice calls and video calls (VoIP).
 
I want to develop around the VoIP protocol used in Telepathy / Empathy. Especially, improving the video conference feature. To achieve that, some improvement must be done in the core of the stream process (using Libstream-engine and Gstreamer) and in the user interface (Empathy). The objective of this project is to have a fonctional interface for audio/video conference, maybe like the Ichat from Mac OSX)