China Mobile, Anritsu Corporation, Asia Pacific Telecom, AT&T, British Telecom, CAICT , CATT, China Telecom, China Unicom, Chunghwa Telecom, Deutsche Telekom, DISH Network, Ericsson, Fujitsu Limited, Huawei, Intel Corporation, InterDigital, Keysight Technologies, KDDI Corporation, KT Corp, KYOCERA Corporation, Lenovo, LG Electronics, LG Uplus, MediaTek, Microelectronics Technology Inc., Mitsubishi Electric Corporation, NEC Corporation, Nokia, NTT DOCOMO, INC., OPPO, Orange, Panasonic Corporation, Qualcomm Technologies, Inc., Rohde-Schwarz, Samsung Electronics, Sharp Corporation, SK Telecom, SoftBank Corp., Sony Mobile Communications Inc., Spirent Communications, StarPoint, Sumitomo Electric Industries, Ltd., TIM, Unisoc, Verizon, VIAVI, vivo, Vodafone, Xiaomi, ZTE