"O'Sullivan led the business through the glory years of Unified Communications at Cisco, when millions of IP telephones shipped year after year, with Cisco moving from number 6 in IP Telephony global market to top of the heap. Along the way, he brought WebEx and Tandberg to Cisco as well as many smaller acquisitions."
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- In The Media, Video | 09/03/18
Palo Alto Technology Partners Managing Director, Barry O’Sullivan interviewed on Irish TV