Membership

Becoming a TTC member gives a number of advantages. Among them are the chance to participate in the development of TTC standards, see your own ideas reflected in ITU-T standards, join various technical seminars and access TTC documents such as TTC standards, TTC survey reports, and the latest technical information. TTC membership is also useful for those seeking to build their human networks.

If you would like to join the TTC, please contact us.

E-mail：ttcsoumu[atmark]lt.ttc.or.jp

Regular Member

• Advanced Telecommunications Research Institute
• ALAXALA Networks Corp.
• ANRITSU CORPORATION
• Communication Line Products Association of Japan
• Communications and Information network Association of Japan (CIAJ)
• Cyber Creative Institute Co., Ltd.
• DAIKIN INDUSTRIES,LTD.
• DENSO CORPORATION
• Ericsson Japan K.K.
• EXEO Group, Inc.
• Foundation for Multimedia Communications (FMMC)
• FUJI ELECTRIC CO., LTD.
• FUJIFILM Business Innovation Corp.
• Fujikura Ltd.
• FUJITSU GENERAL LIMITED
• FUJITSU LIMITED
• Hitachi,Ltd.
• HUAWEI TECHNOLOGIES JAPAN K.K.
• IBM Japan,Ltd.
• Information Processing Society of Japan
• Internet Initiative Japan Inc.
• ITOCHU Techno-Solutions Corporation
• IWATSU ELECTRIC CO.,LTD.
• Japan Approvals Institute for Telecommunications Equipment(JATE)
• JAPAN BROADCASTING CORPORATION
• Japan Cable Laboratories
• Japan Communications Inc.
• JAPAN DATA COMMUNICATIONS ASSOCIATION
• Japan Industrial Imaging Association
• Japan Radio Co.,Ltd.
• Japan Registry Services Co., Ltd.
• JCOM Co., Ltd.
• KDDI CORPORATION
• KONICA MINOLTA, INC.
• Kyocera Corporation
• Little eArth Corporation Co.,Ltd
• MIRAIT ONE Corporation
• Mitsubishi Electric Corporation
• NAKAYO, INC.
• NEC Corporation
• NEC Magnus Communications., Ltd.
• Nippon COMSYS Corporation
• NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION
• NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION
• Nippon Telegraphe and Telephone Corp. (NTT)
• Nokia Solutions and Networks Japan G.K.
• NS Solutions Corporation
• NTT Advanced Technology Corporation
• NTT Broadband Platform,Inc.
• NTT Communications Corporation
• NTT COMWARE CORPORATION
• NTT DATA Group Corporation
• NTT DATA INSTITUTE OF MANAGEMENT CONSULTING, Inc
• NTT DOCOMO, INC.
• Oi Electric Co.,Ltd.
• Oki Electric Industry Co.,Ltd.
• Panasonic Holdings Corporation
• PwC Consulting LLC
• QUALCOMM Japan Inc.
• Rakuten Mobile, Inc. 
• Ribbon Communications K.K.
• SAXA,Inc
• Sharp Corporation
• SKY Perfect JSAT Corporation
• SoftBank Corp.
• Sony Corporation
• Sony Group Corporation
• SUMITOMO DENSETSU CO.,LTD.
• Sumitomo Electric Industries, Ltd.
• TAKAOKA TOKO CO., LTD.
• Telecommunications Carriers Association (TCA)
• THE ITU ASSOCIATION OF JAPAN,INC.
• TOSHIBA CORPORATION
• TOYOTA MOTOR CORPORATION
• Web Consortium Asia Pacific
• YRP R&D Promotion Committee
• ZTE JAPAN K.K.

Supporting Member

• 5core Inc.
• BESTSELECTION INC.
• BUFFALO INC.
• Central Japan Industries Association
• Clover Network Com Co.,LTD
• iD Corporation
• Murata Manufacturing Co.,Ltd.
• NGK INSULATORS, LTD.
• OPTAGE Inc.
• SANWADENSHI CO.LTD

Cooperating Member

• ASTEM Co.,Ltd
• Deloitte Tohmatsu Cyber LLC
• Hiroshima City University
• Kanazawa Institute of Technology
• Keio University
• Medical Innovation Consortium
• PLUSVoice Co.,LTD
• Space-Time Engineering
• The University of Tokyo
• WASEDA University

（as of​  November 2024）