This telecommunications expert witness specializes in Voice-over-IP (VoIP) and Session Initiation Protocol (SIP) systems, with more than 30 years of experience in computer telephony, unified communications, and Internet-based voice technologies. He has more than 10 years of expert witness experience providing expert reports, deposition testimony, and trial testimony in federal courts, international trade tribunals, and arbitration proceedings involving patent infringement, trade secret disputes, and telecommunications system functionality. His technical expertise includes SIP and H.323 signaling, IP-PBX and IP-Centrex systems, softswitch and softphone technologies, SS7 signaling, IVR and voicemail systems, unified messaging, PSTN integration, cellular network interaction, and computer networking protocols.

He has served in executive leadership roles, including President and Chief Operating Officer of a SIP-based global VoIP service provider and Chief Executive Officer of a hosted unified messaging company, and previously founded and acted as chief software architect for enterprise voice, fax, and email messaging platforms. He holds Bachelor and Master of Science degrees in Electrical Engineering and is the inventor or co-inventor of numerous U.S. patents in telecommunications and multimedia messaging technologies.

He provides technical analysis regarding VoIP protocol implementation, telecommunications system design, network interoperability, unified communications functionality, and intellectual property issues in telecommunications litigation.