About the Authors
William Alexander Hannah, CCIE Collaboration #25853, CCSI #32072, along with numerous other Cisco Unified Communications and data center specializations, and VMware certifications, has been an independent IT and telephony consultant, author, and technical editor for more than 12 years. He has been a technical trainer for more than 8 years and has taught more than 20 different courses for Cisco. Alex is a Senior Courseware Developer and Subject Matter Expert for Global Knowledge, designing all CCNP Collaboration courseware, labs, and infrastructure. He has done a wide array of IT and telephony consulting for many different companies along the eastern portion of the United States. A former Senior Architect and Senior Presales ...
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