Computer Science Engineer

JONATHAN LENNOX

*** ****** **. #*

Jersey City, NJ 07302

Tel: 201-***-**** Email: ******@**.********.***

EDUCATION

Columbia University, New York, NY

Ph.D. Computer Science, February 2004

Advisor: Henning Schulzrinne

Dissertation: Services for Internet Telephony

M.Phil. Computer Science, May 2000

M.S. Computer Science, February 1996 GPA 4.083/4.333

B.A. Mathematics, May 1994 GPA 3.937/4.333, Major GPA 4.126/4.333

(Summa Cum Laude, Phi Beta Kappa)

PROFESSIONAL EXPERIENCE

Bell Laboratories Research Intern Holmdel, NJ Summer 1998 Summer 2001

Developed a SIP and RTP-based end point for an experimental advanced mobile switching center

(MSC) architecture. Architected and implemented an embedded RTP stack and a C++/CORBA-

based SIP endpoint.

Designed, developed, and analyzed procedures to e ciently integrate a SIP and RTP-based mobile

switching center with existing mobile networks.

Designed and developed a SIP registration presence integrating a SIP proxy server with a Home

Location Register.

ACADEMIC AND PROJECT EXPERIENCE

Columbia University Post-Doctoral Researcher 2004 present

Columbia University Graduate Research Assistant 1994 2004

Design and implementation lead of CINEMA, an Internet Telephony server for SIP. 1998 present

Created, designed, and implemented the SIP Common Gateway Interface and the

Call Processing Language.

Designed and implemented the proxying, policy, build system, and event-state ar-

chitecture.

Measured performance and evaluated throughput.

Designed and developed a system for sharing applications among computers. 2004 present

Created RTPLib++, a C++-based library for the Real-time Transport Protocol. 2002 2003

Analyzed and categorized feature interactions in Internet telephony. 1998 2000

Analyzed the implementation of Intelligent Network services in Internet telephony. 1997 1999

TEACHING EXPERIENCE

Columbia University Department of Computer Science

Taught:

Programming Languages: Java Spring 1998

Teaching Assistant:

Topics in Computer Science: Cryptography Fall 1995

Arti cial Intelligence Spring 1995

Analysis of Algorithms Fall 1993 & Fall 1994

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OTHER EXPERIENCE

Columbia University Engineering Development and Alumni Relations Web Designer

1996 1997

Designed and adapted alumni magazine for web presentation.

SKILLS

Programming Languages

C, C++, Java, Perl, SQL, PHP, Tcl/Tk, Unix shell, Common Lisp, Scheme, Pascal

Internet Protocol Knowledge

VoIP/IP Telephony: RTP/RTCP, SIP, H.323, SDP, SAP, RTSP, SIP-CGI (Author ), CPL (Author )

General: TCP/IP, UDP, SNMP, RPC, CORBA, HTTP, CGI, SMTP, TFTP, NFS, XML

System Knowledge

Pthread, Unix system and shell programming, Unix system administration

Tools

Perl, Tcl/Tk, TEX, L TEX, Lex, Yacc, CVS, RCS, Make, Sed, Awk, gdb, M4, Autoconf, Automake

A

SELECTED PUBLICATIONS

J. Lennox. Services for Internet Telephony. Doctoral Dissertation. Janurary 2004.

J. Lennox and H. Schulzrinne. A Protocol For Reliable Decentralized Conferencing. ACM International

Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV),

Monterrey, California, June 2003.

J. Lennox and H. Schulzrinne. CPL: A Language for User Control of Internet Telephony Services. Inter-

net Engineering Task Force, to appear as Request For Comments (Proposed Standard); blocked on

un nished normative reference. January 2002.

J. Lennox, K. Murakami, M. Karaul, and T. F. La Porta. Interworking Internet Telephony and Wireless

Telecommunications Networks. Computer Communications Review, October 2001, Vol 31, No. 5, pp.

25-36.

J. Lennox, J. Rosenberg, and H. Schulzrinne. Common Gateway Interface for SIP. Internet Engineering

Task Force, Request for Comments 3050 (Informational), January 2001.

J. Lennox and H. Schulzrinne. Call Processing Language Framework and Reqirements. Internet Engineer-

ing Task Force, Request for Comments 2824 (Informational), May 2000.

J. Lennox and H. Schulzrinne. Feature Interaction in Internet Telephony. Sixth Feature Interaction Work-

shop, Edinburgh, Scotland, May 2000.

J. Lennox, H. Schulzrinne, and T. F. La Porta. Implementing Intelligent Network Services with the Session

Initiation Protocol. Columbia University Computer Science Technical Report CUCS-002-99, January

1999.

CITIZENSHIP

United States of America

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