Principles, Systems and Applications of IP Telecommunications
Services and Security for Next Generation Networks
July
7,8 2009
Georgia Tech, Atlanta, Georgia, USA
Historical Talk
We're pleased to annouce that
Danny Cohen (Sun Microsystems) and Stephen Casner (Packet
Design) will present a historical talk.
Title: A Brief Prehistory of VoIP
Abstract
- The 1971 realtime application (RFC0089)
- Start NSC (Network speech/secure communication)
- Understanding RT vs nRT communication
- Digital speech and the need to compress it (PCM, DPCM, CVSD, LPC/LPC10)
- NVP over the ARPAnet, type0/type3 packets
- Introducing and showing the movie
- The birth of the Internet with TCP
- Separating IP from TCP
- UDP, NVP-II
- PVP, Video compression (DCT based)
- Progress stalled, waiting to low-cost vocoding
- MultiMedia p2p, MBONE, and teleconf
- RTP
- VoIP, SIP, ...
- Streaming
- Conclusion
Short Bio for Danny Cohen
Danny received his PhD from Ivan Sutherland at Harvard.
Danny implemented an interactive visual flight simulation over the ARPAnet, in 1971. This was the first realtime application over a packet switching network. In 1973 he moved to USC/ISI where he, with Steve Casner, applied the lessons learnt to interactive packet voice communication (aka telephony). The lessons learnt were then applied to video communication and to multi-media conferencing. Because of his work with realtime communication, Danny drove the separation of IP from TCP. Danny is probably best known for coining the terms "Big Endians" and "Little Endians"). Later, Danny created the MOSIS system. Since then Danny is working on very fast networks for short distances, first at USC/ISI, then at Myricom, and now at Sun Microsystems. Danny is a member of the National Academy of Engineering and of the Flat Earth Society. He is also an adjunct professor of CS at USC.
Short Bio for Stephen L. Casner
Stephen L. Casner received his M.S. in Computer Science from the University of Southern California in 1976. At USC's Information Sciences Institute with Danny Cohen, he designed and implemented protocols and software for some of the earliest experiments with packet voice using the ARPAnet. Later, he was the primary organizer for the establishment of the worldwide Internet Multicast Backbone (MBONE) in its initial experimental phase. In 1995, he took this work to the commercial arena with further development of packet-based audio and video technology for both conferencing and streaming applications at Precept Software, which was acquired by Cisco Systems. He served as chairman of the Audio/Video Transport working group of the Internet Engineering Task Force from its inception in 1992 until 2003. This group has developed the Real-time Transport Protocol (RTP) for packet audio and video as well as other real-time multicast and unicast applications. Currently at Packet Design he is applying some of the same techniques in network performance measurement and routing analysis.