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Lena W. Chung serves as CEO of Environmental Technologies Foundation Limited, a charitable foundation focusing on environmental issues in Hong Kong.  An experienced global executive, Lena has over 30 years experience in the telecommunications industry.  She was Managing Director of AT&T's wholesale VOIP service, which provides voice over Internet capabilities for carriers, ITSPs and next generation telcos. She managed the overcall business operations of the AT&T Global Clearinghouse and the Enterprise Nodes in Europe and South America. Lena is a pioneer in applications over IP, leading AT&T's foray into this space with the launch of innovative IP and VOIP services including the AT&T Global Clearinghouse in 1998. She has extensive experience in sales, marketing, business development and operations and held key positions in sales, product management and marketing divisions before her retirement from AT&T. Lena holds a BS and MBA from Columbia University and currently resides and works in Hong Kong.