SIP is the largest standard in the IETF’s history, and solutions continue to be suggested. Some concerns in the SIP community suggest limitations in the current implementations. Other issues represent advances that will impact future network design. This panel of IETF participants looks at the current status of progress in these areas and whether the ongoing standards work is impacting deployments.

Alan Duric is co-founder and Chief Technology Officer at Telio AS, the fastest growing Nordic Broadband Telephony/Multi-Modal service provider.

Duric is an early pioneer of VoIP and brings almost a decade of experience in VoIP and active contribution through his development and standardization work (as a co-author and/or contributor to number of IETF, ETSI and ITU standards). Beside his standardization work, as a developer and senior systems architect at Ericsson, Alan was involved in the early deployment and development of some of the worlds largest VoIP networks such as deltathree.

At Global IP Sound (suppliers of voice components for Skype), Duric worked as Senior Systems Architect, where he steered standardization efforts and was responsible for iLBC (internet Low Bitrate Codec), an IETF and CableLabs standard codec for VoIP.

Jiri Kuthan is co-founder and CTO of iptelorg. Jiri has been responsible for defining iptelorg's SIP product architecture and deployment of his company's products with major worldwide service providers. Jiri's focus today is building highly secured SIP-based networks.

Prior to founding iptelorg, Jiri was working with Fraunhofer and MCI Worldcom. Jiri has been actively participating in IETF standardization, serves on TPC of several related conferences and is a frequent industry speaker.

Dave Phelps has worked at MCI for the past 11 years in the area of Enterprise Contact Center Solutions. Dave is currently a Principal Engineer working on IP enabling MCI’s enhanced services infrastructure. Dave has been issued 4 patents in the past for his work in these areas. Prior to his work at MCI, Dave performed system engineering work for Lockheed Martin on Command and Control Systems. Prior to that Dave worked in the Defense industry designing maintenance and operations trainers for the B2 bomber program and DSP software for various missile systems. Dave has a BS in Electrical Engineering from Cornell University and a Masters in Control and Communications from Cal Poly.

Dr. Sinnreich is at present CTO at Pulver.com and is working on new Internet communication services. Henry Sinnreich has held various engineering and executive positions at MCI and has been involved in Internet and multimedia services for over 10 years, including the development of the MCI flagship MCI Advantage service based on SIP. Previous work at MCI includes microwave radio, lightwave engineering, digital cross-connects, laboratory testing, long distance telephony switching, frame relay, SMDS, and web based IT systems.

Dr. Sinnreich was also a contributor to early Internet work, such as the upgrade by MCI of the NSF IP network, the first IP Gigabit trial network in the N.E. USA Corridor, RSVP validation on the IP wide area network and support for the global internetMCI IP service.

Henry Sinnreich is also a contributor to the SIP and multimedia related working groups in the IETF. Henry Sinnreich has been awarded the title of Pioneer for VoIP in 2000 at the VON conference in Stockholm, Sweden and is a co-founder and former member of the board of the International SIP Forum. Henry Sinnreich is a member of the IEEE and ACM and is also a frequent speaker and lecturer on Internet communications; he has a number of publications on this topic and has co-authored the books "Internet Communications Using SIP" and "SIP Beyond VoIP".