Nippon Telegraph and Telephone Corporation (NTT)
 Japan Post Co., Ltd.
 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

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