Michael Luo is a senior technical assistance center engineer at Cisco Systems, Inc. He works in the unified communication team which covers CUCM(CallManager), CUPS (Unified Presence), CER(Emergency REsponder/e911), etc. Before that, he worked in UCCX (IPCC Express) team. Michael has more than 15 years of experience in IT industry. Michael worked in China, Hong Kong and US for many IT vendors such as Novell, Sun, Avaya, Cisco. He holds many IT certifications such as CCIE (#6183, Routing & Switching), MCSE, MCNE, OCP, JNCIE. Michael is also a Cisco certified specialist on UCCX and CUPS and is the author of the book, "Deploying Cisco Unified Presence."