Barry O'Sullivan
Senior Vice President, Voice Technology Group
Cisco Systems, Inc.
As senior vice president of Cisco’s Voice Technology Group (VTG), Barry O’Sullivan leads a team of voice
industry executives who are responsible for Cisco’s Voice and Unified Communications Business Units. VTG is
responsible for developing the company’s IP telephony systems, IP phones, customer contact solutions, and
unified communications applications including messaging, video and audio conferencing, and enterprise
collaboration.
About Barry O'Sullivan (PDF)
