? Cisco Systems, Inc.
- Hewlett-Packard Enterprise Company
- Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
- Juniper Networks, Inc.
- Broadcom, Inc. (Brocade Communications Systems, Inc.)
- Alcatel-Lucent Enterprise (China Huaxin Post and Telecom Technologies Co., Limited)
- Nokia Corporation
- Avaya, Inc. (Avaya Holdings Corp.)
- ZTE Corporation