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Keynote at IEEE International Conference on Next Generation Mobile Applications, Services and Technologies (NGMAST), September 13, 2007 (Cardiff) How the killer application is not an application, but the environment to create applications. Describes the web-centric model of telephony application development.

Presented at ACM MNCNA 2007, November 26, 2007 (Port Beach, California) This paper explains why it is unlikely for traditional service providers to create communications applications in the new, converged network. The ability to create applications depends on middleware available to make the task of application development tractable. This paper describes the evolution and future…

Keynote at ACM Workshop on Middleware for next-generation converged networks and applications (MNCNA), November 26, 2007 (Port Beach, California) Challenges and opportunities in Telco 2.0.

Keynote at IMTC Member Meeting, October 8, 2007 There are old models, new models, and blended models. We think about IPTV as “Cable with a fancy remote control.” We think about YouTube as “Home movies on a really small screen.” Just as in the old days, some of the “home movies” have production values equaling…

Northwestern University Colloquium, April 16, 2007 (Chicago) Colloquium describing KPML and research in convergence.

Keynote at China VoIP 2006, June 20, 2006 (Beijing) Discusses changes in the IMS industry structure.

Keynote at China VoIP Conference and Expo 2005, May 19, 2005 (Beijing) VoIP has seen great successes for the access and transport of multimedia streams. However, most of the deployments have been within a given service provider’s administrative domain. We will discuss the progress that has been made in deploying VoIP, the barriers that remain,…

Keynote at China SIP Forum 2004, May 19, 2004 (Beijing) This session will introduce the SIP Forum, the principal worldwide forum for the promotion of SIP. Three years ago, we were trying to get a single call completed. Today the focus is on deploying carrier systems. Some of the promises of SIP are enhanced flexibility,…

Keynote at China VoIP 2004, May 19, 2004 (Beijing) This session will introduce the IPCC, the principal worldwide forum for the promotion of multimedia communications over packet networks. Much work has been done, first with MGCP and H.284 with SoftSwitches and H.323, and now with SIP, to enable the deployment of cost-effective packet-based telephony networks.…

Presented at the IEEE ComSoc/Computer Society Boston Chapter Meeting, May 21, 2001 XML, XSL, and application servers enable application developers to separate user interface code from application code.  For a quality user interaction, the user interface code needs to know at least the broad parameters of the terminal device.  For example, the presentation of a…