1. Created by : Dani Shaket, Ran Zeller Supervisor : Alexander Shraer

2. Online applications today, often suffer from low stability and performances. These problems can be moderate using smart resource sharing. Our solution, is a system where each service provider (server) “knows” all the other servers and together they can provide a better solution for online applications.

3. Using Ensemble group communication, each server can join the SiBS group and exchange sessions information in order to participate the overall burden. Users can watch media streaming, participate text chat or a drawing pad. The Users doesn’t really need to know where the session is hosted.

4. The Session creator can control the session by Lock/Unlock applications, respond to other users request, appoint replacement etc… We can use the SiBS system to create a virtual classroom: Watch a video and discuss it later pause for questions explain via drawing pad or text chat

5. System Server Session 1 Server Session 2 Session 4 Client Servers Group Client Manager Client Manager Client Session 3 Client Manager Client Manager

6. User View

8. Design and implementation - Server

9. Server System Server Login Manager Session Manager QoS Manager Recovery Manager Sip Multiplexer Ensemble Clients * * Servers * The Server Each Square represents a Subsystem The application will be build over an infrastructure that provides Messaging between subsystems and Multithreading support.

10. Client System Client Sip Layer Server GUI Media Player JMF Data Source The Client Each Square represents a Subsystem The application will be build over an infrastructure that provides Messaging between subsystems and Multithreading support.