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LG Electronics, Inc.Sharp Corp.Huawei Technologies Co., Ltd.Ericsson, Inc.Nippon Telegraph & Telephone Corp.Kyocera Corp.Guangdong OPPO Mobile Telecommunications Corp., Ltd.Guangdong OPPO Mobile Telecommunications Corp., Ltd.Electronics & Telecommunications Research InstituteAlcatel-Lucent S ANTT DOCOMO, Inc.Showa Denko Materials Co. Ltd.Resonac Corp.Western Electric Co., Inc.Fujikura Ltd.Hitachi Metals, Ltd.Proterial Ltd.vivo Mobile Communication Co., Ltd.Nokia Siemens Networks OyLucent Technologies, Inc.BT Group PlcChina Mobile Communications Group Co., Ltd.China Mobile Communications Group Co., Ltd.Mannesmann AGJapan Aviation Electronics Industry Ltd.SK Telecom Co., Ltd.BlackBerry Ltd.Nubia Technology Co., Ltd.Nanjing University of Posts & TelecommunicationsKDDI Corp.
Deutsche Telekom AGDeutsche Telekom AGAvaya, Inc.LG Uplus Corp.Earth Technology Co. Ltd.Level 3 Communications LLCNeusoft Corp.Unify GmbH & Co. KGPlantronics, Inc.Genesys Cloud Services, Inc.Polycom, Inc.SMART Technologies ULCNokia of America Corp.Panasonic Corporation of North AmericaT-Mobile International AG & Co. KGAfiniti Ltd.Ribbon Communications Operating Co., Inc.GENBAND US LLCKoss Corp.Enterasys Networks, Inc.Vidyo, Inc.silex technology, Inc.Twilio, Inc.Vonage Business, Inc.Mavenir Systems, Inc.Reliance Jio Infocomm Ltd.ShoreTel, Inc.Synchronoss Technologies, Inc.damaka, Inc.LogMeIn, Inc.
RingCentral, Inc.Gigaset Communications GmbHAlpha Networks, Inc.8x8, Inc.silex technology, Inc.Twilio, Inc.TranSwitch Corp.Calix, Inc.Audiocodes, Inc.Grandstream Networks, Inc.Mobileum, Inc.BroadSoft, Inc.Ooma, Inc.Net2Phone, Inc.Bandwidth, Inc.Acme Packet, Inc.Phoenix Technologies International LLCCalabrio, Inc.JAJAH, Inc.Nextiva, Inc.World Wide Packets, Inc.Nurivoice Co., Ltd.ViaCLIX, Inc.NextNet Wireless, Inc.PowerDsine Ltd.BridgePort Networks, Inc.IntelePeer, Inc.PurpleComm, Inc.Talari Networks, Inc.D2 Technologies, Inc.