Autor/-in: William Y. Chang

William Y. Chang, co-author of "Service Assurance for Voice over WiFi and 3G Networks," is a founder of AcuMaestro, Inc., and has over twenty years of consulting, engineering, and development experience in telecommunications, financial, and defense industries.

Mr. Chang¿s credentials reflect a career of blending leading-edge solution quality with system engineering, deep-information management, telecommunications technologies, mobile-service creation and operation, and commercial software-product development. Currently, he serves as a Lead System Integrator and Technical Consultant in the Future Combat System (FCS) Division at Boeing. His affiliations include: Science Applications International Corporation (SAIC), where he was Principal Systems Engineer with the Tactical Systems and Solutions business unit; AcuMaestro, as their Chief Technology Officer; Bell Communications Research (now Telcordia), where he was the Principal Systems Engineer of the Next Generation Network OSS Engineering Group; Bell Laboratories, as a software-architecture consultant for the AT&T Customer Network Management solution and federal government network management system (FTS2000); Tandem Computer Corporation, where he provided engineering consultation for a distributed-banking solution; and Unisys Corporation, where he was a firmware engineer in the intelligent-terminal development group. He holds a Master of Arts in Computer Science from the New Jersey Institute of Technology and is pursuing a Doctorate in Electrical Engineering.