Jonathan Rosenberg Bio

Jonathan is the co-inventor of SIP and related technologies (ICE, STUN, SIMPLE, SDP), many of which are now the foundation of all modern telecommunications. He shipped many of the industry’s first products – first SIP stack, first SIP proxy, first Session Border Controller (SBC), first SIP application server, first Internet Multimedia Subsystem (IMS) network. He is currently CTO and Head of AI for Five9, previously CTO of Cisco’s multi-billion dollar Collaboration business, and was the principle behind Webex Teams (formerly Cisco Spark). Prior to that, Chief Technology Strategist for Skype, Cisco Fellow.

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