Jonathan Rosenberg
SIP also ushers in interoperability between VoIP hardware. ’SIP will be critical,’ said Bart Winegar, vice president of Sota Technologies, an integrator in Coshocton, Ohio. ’Customers will be less tied to one hardware vendor. It gives them more choices.’
When he was about 6 years old, Jonathan Rosenberg’s mother asked him what he wanted to do when he grew up. A home video captured his answer: ’I want to fix computers.’ That passion eventually led the self-described ’classic geek’ to a career in communications technology where, as one of the co-authors of the Session Initiation Protocol (SIP), his contributions are changing the telephony landscape.
Rosenberg, 33, came to the SIP project while working on his doctorate at Columbia University under Prof. Henning Schulzrinne and became one of four original co-authors of SIP when it was first unveiled in 1999. Now the protocol, an emerging call control standard, is quickly becoming a mainstay technology for VoIP deployments, enabling advances that are turning IP telephony into a major productivity tool for businesses around the world.
’It’s able to bring presence, instant messaging, conferencing, collaboration, voice and video together so these things all work together smoothly and interact together in lots of great ways,’ said Rosenberg, director of VoIP service provider architecture at Cisco Systems, San Jose, Calif., and a member of the Internet Architecture Board.
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