Robin Cai is a senior customer support engineer in the Cisco Technical Assistance Center in Sydney. His current role includes configuring, troubleshooting and designing Cisco Unified Border Element Enterprise and Service Provider, voice gateways, and Cisco Unified Communications Manager. He has in-depth knowledge of Cisco and industry signaling protocols. He has more than 11 years of experience working in the telecommunication industry. Previously at Cisco he was a senior software test engineer at the China Research & Development Centre in Shanghai. Before joining Cisco, he worked for UTStarcom as a field support engineer and for Huawei Technologies as a software development engineer. Cai holds a bachelor's degree in computer science from Nanjing University of Science & Technology. He also holds CCIE certification (#26037) in Voice and Routing & Switching.