1. ALE USA Inc.
2. ANT Telecom. Ltd
3. Apple Inc.
4. AT&T Corporation
5. Cisco Systems Inc.
6. Huawei Technologies Co. Ltd
7. Microsoft Corporation.
8. Mitel Networks Corporation
9. Nextiva Inc.
10. Nokia Corporation
11. Nomios USA Inc
12. One New Zealand Group Limited.
13. Orange S.A.
14. Pulse Telesystems Private Limited
15. Reliance Jio Infocomm Ltd.
16. Ribbon Communications Operating Company Inc.
17. Rogers Commuinication Inc
18. Samsung Electronics Co. Ltd
19. Sony Europe B.V.
20. Teledynamics LLP
21. Telefonaktiebolaget LM Ericsson
22. Televic Group NV
23. Vodafone Group Plc