Since April 2007, Mr. Ho has served as the Chairman of the Greater China Region for Nokia Siemens Network, a joint venture between Finland-based Nokia Corporation, a multinational telecommunications company, and Germany-based Siemens AG. Between April 2004 and March 2007, Mr. Ho served as the President of Nokia China Investment Limited, the Chinese operating subsidiary of Nokia Corporation. Between April 2004 and March 2007, Mr. Ho served as the President of Nokia China Investment Limited, the Chinese operating subsidiary of Finland-based Nokia Corporation, a multinational telecommunications company. Since January 2002, Mr. Ho has also served as Nokia China Investment Limited's Senior Vice President, Networks -- Greater China. Between 2000 and August 2001, Mr. Ho was the Senior Vice President and Chief Operating Officer of Nortel Networks China Limited, the Chinese operating subsidiary of Canada-based Nortel Networks Corporation, a multinational telecommunications company. Between 1998 and 1999, Mr. Ho was the Vice President and General Manager of Nortel Networks China Limited's Greater China Wireless Solutions division. Prior to joining Nortel Networks China Limited, Mr. Ho spent 15 years working in the Chinese operating subsidiaries of multinational telecommunications companies in roles of increasing responsibility.