1. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Modular Advanced Collaboration System A Framework for Collaborative Applications Outline Motivation & Aims Structure & Components Status & Contact

2. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Motivation n strong demand on CSCW group work, e.g., software development distance learning, e.g., universities lifelong learning, e.g., in companies n current systems not sufficient control not easy to use not portable Network

3. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Aims n framework for collaborative applications modular / flexible / extensible multiple applications / independent of content n ease of use advanced GUI enhanced floor-passing mechanisms n portable Java based n interworking uses standard protocols MBone –SAP / SDP / SIP ITU –H.323 / T.120 / LDAP

4. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Structure n 4 horizontal layers n variable number of applications LRMP (Reliable Multicast) Video WB Audio TelSEE Control (incl. ViSCO) TelSEE- Window WB- Window Video- Window TelSEE Panel Control-Window Video- Panel Control Panel Display Control ApplicationsSessions Tools Network Audio Panel Network Glue ViSCO TCP UDPCORBA Floor-Strategies Floor-Mechanisms Control-Interface

5. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Control n control levels system(access to microphone, speakers, camera,...) session(user invite, session moderation,...) users(access to slides in whiteboard,...) n different session types open (without access control) moderated (with access control)... n different access strategies open (anyone can speak at any time) agenda (predetermined order) round robin (by demand in dynamic order)...

6. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Applications n audio & video n whiteboard motivated by experience from lectures in 97 & 98 n chat n development tool TelSEE page controltele-markerps import toolsoptions n whiteboard full featured drawing –e.g., object selection tele-pointer / tele-marker graphics and postscript object (access) control

7. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig TelSEE n CASE tool for distributed software development support for users distributed in time and/or space synchronous and asynchronous work modes n features real distributed/concurrent work on objects high interactivity private views platform independent multicast communication architecture extensible

8. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig TelSEE

9. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Session List n MACS session list MACS sessions MBone sessions session list tab basic operationssession description MACS sessions MBone session

10. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Users List n MACS user list MACS user NetMeeting users (via LDAP from a ILS) user list tab basic operationsuser description MACS users NetMeeting users

11. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Seminar n seminar scenario few participants (ca. 10) equal rights, moderator optional session tab basic operations chat visual control available applications equipment

12. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Classroom n possible implementation l class represented as one entity student “steps” in front of class advantages +high scalability +easy to realize disadvantages –little feedback for teacher n further visualizations being investigated teacher with class student talking to class

13. D. Sturzebecher, Institute of Operating Systems and Computer Networks, TU-Braunschweig Status & Contact n status demo release V0.3 – classroom scenario under construction –TelSEE included n next steps further integration of floor control a release with classroom scenario test in seminar between Braunschweig and Hannover n further info flyer MACShttp://macs.ibr.cs.tu-bs.de To/oLhttp://www.tu-bs.de/afh/albrecht/tool/