Jonathan Rosenberg (SIP author)
|Born||1972/1973 (age 44–46)|
|Alma mater||MIT, Columbia University|
|Notable work||RFC 2543, RFC 3261|
Jonathan Rosenberg (born 1972/1973) is a technologist noted for his work in IP communications. Network World has referred to him as "a pioneer [in] the development of the SIP protocol", and he was included in the 2002 TR35 list of the world's top under-35 innovators, as published by MIT Technology Review.
Rosenberg is a longtime member of the I.E.T.F, where he has served in several leadership positions over his career. As of August 2017, he remains the 8th most prolific author of internet standards. 
Rosenberg has worked in the VOIP field for over 20 years to date. He began working at Lucent Technologies in March of 1993 as a Member of the Technical Staff. There, he led a small SIP research lab, acted as a team lead for DSP work, and conducted research in areas of wide area service discovery. It was during his time at Lucent that he received his PhD from Columbia University. In October of 1999, Rosenberg left Lucent to serve as the chief technology officer of dynamicsoft. At dynamicsoft, Rosenberg conceived of, drove requirements for, designed, and lead software development for industry’s first SIP application server. He also acted as architect and first product manager for dynamicsoft presence engine, conceived of, helped developed requirements for, and designed SIP firewall control proxy and co-developed the architecture for the dynamicsoft network application engine. When dynamicsoft was acquired by Cisco, Rosenberg followed the company. At Cisco, Rosenberg earned the rank of Cisco Fellow, the company's most senior technical position. He drove Cisco’s Intercompany Media Engine (IME) product from concept through ship and set technology strategy for Cisco’s service provider voice business. In September of 2018, Rosenberg reported that he is leaving Cisco. 
- "Innovators Under 35". MIT Technology Review. 2002. Retrieved April 1, 2015.
- Duffy, Jim (March 12, 2013). "SIP pioneer Rosenberg returns to Cisco". Network World. Retrieved April 2, 2015.
- Lunden, Ingrid (March 4, 2013). "Brain Drain At Skype? Tech Leader Jonathan Rosenberg Latest To Leave, Now At Cisco As CTO, Cloud Collaboration". TechCrunch. AOL. Retrieved April 1, 2015.
- Rosenberg, Jonathan (February 3, 2014). "About Me". jdrosen.net. Retrieved April 1, 2015.
- "Jonathan Rosenberg". Cisco Blogs. Cisco. Retrieved April 2, 2015.
- "Distribution of Authors According to How Many Documents They Have". www.arkko.com. Retrieved 2017-08-24.
- "'Yes, I'm Leaving': Cisco Systems Collaboration CTO To Depart". www.crn.com. Retrieved 2018-09-21.
- Dix, John (June 28, 2010). "Q&A: SIP pioneer/Cisco Fellow jumps ship to Skype". Network World. Includes an interview and a short profile of Rosenberg.
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