I went to the Massachusetts Institute of Technology for my Bachelors and Masters degrees. I did my Masters as an intern in the Signal Processing Research Department of Bell Laboratories. I worked with Dr. John Hartung and Prof. Jae Lim on implementing a very low bitrate video codec on a special purpose DSP. After finishing that work, I received both degrees simultaneously. I then joined the ATM Networks Research Department. I spent my first year as an intern in AT&T Consumer Products, working on the video compression algorithm and implementation for their next videophone product. Then, I came full to the High Speed Networks Research Department.
I first spent some time working on ATM telephony, focusing on PBX interconnection over ATM clouds. Then, I moved over to Internet, and have looked at RTP scalability issues, signaling, services, service creation, and architectures for Internet Telephony
Then, in October of 1999, I moved over to dynamicsoft as Chief Scientist. There, I help guide the technology directions of their product line and also represent their interests in standards, most notably IETF. In June 2000, I was awarded the VoN Pioneer Award by Pulver.com for my contributions to the VoIP industry.
I am very involved in IETF. There, I co-chair the SIP working group and chair the IP Telephony working group. I'm the author of several RFCs related to SIP and RTP.
From 1996 to 2001, I was a part time Ph.D. student at Columbia University. I received my Ph.D. in May of 2001, the title of which is "Distributed Algorithms and Protocols for Scalable Internet Telephony". My thesis advisor was Prof. Henning Schulzrinne.