Introduction

An Adaptation Layer Translator (ALX) serves to bring high quality video conference to today's broadband WANs such as the Internet2. Our major contributions in the ALX project are

1. Design and development of a hardware device, ALX, to transmit high quality video and audio traffic among participants seperated by substantial distances.
2. Employ a conference control protocol beased on a channel rotation scheme which avoids race conditions, scales well, and fits naturally in an interactive collaboration environment.

ALX Hardware

ALX Conference Control Protocol

Experiment setup

Demo instructions

Measurement of ALX Conferences

Software Downloads

Related Publications

A Conference Control Protocol for Highly Interactive Video-conferencing, by Ruibiao Qiu, Jerome R. Cox, and Fred Kuhns. Proceedings of IEEE Globecom 2002, Taipei, Taiwan, November 2002.
• Bringing Studio Quality Video-conferencing to Wide Area IP Networks with an Adaptation Layer Translator (ALX), by Ruibiao Qiu, Fred Kuhns, Jerome R. Cox, Jr. and Craig Horn. Proceedings of IEEE International Conference on Multimedia and Expo (ICME 2002), Lausanne, Switzerland, August 2002.
• High Quality Videoconferencing System for Wide Area IP Networks, by Ruibiao Qiu, Fred Kuhns, Jerome Cox, Craig Horn. Proceedings of SPIE ITCom 2002, Boston, MA, July 2002.
• Adaptation Layer Translator (ALX) Design and Application, by Ruibiao Qiu, Fred Kuhns, Jerome R. Cox Jr., and Craig Horn. Washington University, Department of Computer Science Technical Report, WUCS-02-11, March 2002.
• Floor Control Protocol in ALX Video-conference Application, by Ruibiao Qiu. Washington University, Department of Computer Science, Technical Report, WUCS-99-41, November 1999.

People

• Ruibiao Qiu
• Dr. Jerome R. Cox
• Fred Kuhns
• Craig Horn (Erlang Technology Inc.)
• Bob Whitman
• Chris E. Neely
• Thanks to Dr. Gordon Springer and Arturo Guillen at University of Missouri - Columbia for making the ALX experiments successful.