This talk explores the development of interactive packet voice beginning in 1974 with experiments over the ARPAnet in the NSC (Network Speech/Secure Communication) program sponsored by ARPA, initiated by Bob Kahn. One highlight will be the showing of a movie made in 1978 to demonstrate a multi-party teleconference over the packet network, including one participant interfaced from a telephone. The talk will be presented in two sessions (two days), with the movie shown at the start of the second session.

After teaching at Harvard he joined USC/ISI where he started many network related projects, including Packet-Voice (aka Voice over IP), Packet-Video, Internet Concepts, MOSIS, Digital Library, e-commerce, and ATOMIC which was the forerunner of Myrinet.

Later, Danny co-founded Myricom (with Bob Felderman, Chuck Seitz, and others) which commercialized Myrinet, a high-performance system area network. In 2001 he joined Sun and was working there on very fast communication over very short distances, using optical and electrical signaling. He is perhaps best known for coining the terms "Big Endians" and "Little Endians".

Danny is a member of the National Academy of Engineering (NAE), a fellow of the IEEE, and was a Sun Microsystems Distinguished Engineer until he was sold to Oracle. He was also a bona fide member of the International Flat Earth Society, and an instruments rated commercial pilot for single- and multi-engine planes, land and Sea.

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.