Mark B. Castleman – CEO

Mark is responsible for building the Company’s business in the hosted voice communications marketplace.  Along with his team, Mark has built a voice platform and delivered unparalleled continuity of service to the Company’s clients, an extremely rare outcome in today’s tech/communications world.  Mark’s focus on the business and understanding of human-to-human interaction in voice services, has led to strength and stability in a quick shifting marketplace where many companies have limited depth and minimal expertise.  Under Mark’s leadership,  and 10 years of progressive growth and maturity of approach and technology, PBX Central is known as a stable and trusted platform in the hosted communications marketplace.

• Co-founder,  Swakker LLC. – mobile application platform technology (www.swakker.com)
• + 1 million users.  Mobile to mobile information sharing platform for iPhone, iPad and mobile devices.
• VP Product Development – Caleo Networks (Unified Office Network) – carrier voice messaging
• Director – Business Development, Dana Commercial Credit Corp (Ironrhino)
• Director – Strategy, USWeb/CKS
• BS Architectural Studies, University of Texas – Austin.  Georgetown University, Language & Linguistics
• Interests:  Rowing, Architecture, Triathlon
• 17 patents issued or pending in voice communications and mobile information sharing

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Charles L. Miller – CTO & Vice President of Software Development

Charlie, co-founder of PBX Central, is responsible for the Company’s software development.  Charlie has developed advanced commerical software for more than 30 years. His product development experience includes IBM Mainframes, proprietary and Unix based mini-computers to Microsoft Windows based systems.  Mr. Miller is a expert C/C++ software engineer with significant experience in communications systems and advanced business systems.  Charlie is a trusted, mature technology executive.  Unswayed by movement or fad, Charlie has proven to be a leader, capable of building high quality, stable, advanced and accessible software solutions.

• Software Engineering and Technical Executive
• 10 years exclusive development of hosted voice messaging, voip and telephony
• 30 years software and systems development
• VP of Engineering – Caleo Networks (Unified Office Network) – Massively scalable voice messaging and call routing for carriers
• Founder – Texian Systems.  Manufacturer Accounting Systems
• Service Management and Accounting Systems
• Sales Analysis Software Engines
• Inventory Control Systems
• Custom C++ Libraries across multiple indsutries
• Interests:  Astronomy, Telescope Construction and Machining, Soaring (Sailplane)

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