Nippon Telegraph and Telephone Corporation (NTT) 　Japan Post Co., Ltd. 　NTT DOCOMO, INC. 　NTT East Corporation 　NTT West Corporation 　NTT Communications Corporation 　NTT Comware Corporation 　NTT Internet Inc. 　CONEXIO Corporation 　Panasonic Co., Ltd. 　Panasonic Industrial Devices Systems and Technology Co.,Ltd. 　Socionext Inc. 　Fuji Xerox Co., Ltd. 　Fuji Xerox Information Systems Co., Ltd. 　Tokyo Electron Ltd. 　Tokyo Electron Device Ltd. 　Continental Automotive Japan K.K. 　Zuken, Inc. 　Axis Communications AB 　Napson Corporation 　Shin-Etsu Denso Co., Ltd. 　Nihon Ultmarc INC. 　Nihon University 　The University of Tokyo 　Tohoku University 　Hitotsubashi University 　Ministry of Internal Affairs and Communications (MIC) 　The Telecommunications Association of Japan 　NHK International, Inc. 　KDDI Foundation 　Japan Telecommunications Engineering and Consulting Service 　Tsushinbunka Association 　Japan Air Mail Co., Ltd. 　The Tsushin-Bunka Shinpou 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 and more