1. 2600Hz Inc. by Ooma Company
2. 3CX Group
3. 8x8 Inc.
4. ALE International SAS
5. Amazon Web Services Inc.
6. AT&T Inc.
7. Avaya LLC
8. Broadcom Inc.
9. Cisco Systems Inc.
10. Connect Solutions Inc.
11. Crexendo Inc.
12. Dialpad Inc.
13. Genesys Cloud Services Inc.
14. Google LLC by Alphabet Inc.
15. GoTo Group Inc. by Citrix Systems Inc.
16. Infosys Limited
17. Intermedia.net Inc.
18. International Business Machines Corporation
19. IVA Technologies
20. Microsoft Corporation
21. Mitel Networks Corporation
22. NEC Corporation
23. Nextiva Inc.
24. Nokia Corporation
25. Oracle Corporation
26. Panasonic Holdings Corporation
27. Poly Inc. by HP Inc.
28. Ribbon Communications Inc.
29. RingCentral Inc.
30. Salesforce Inc.
31. Sangoma Technologies Corporation
32. Smart IMS Inc.
33. Tata Communications Limited
34. Twilio Inc.
35. Verizon Communications Inc.
36. Vitel Global Communications LLC
37. Vonage Holdings Corp. by Telefonaktiebolaget LM Ericsson
38. Xiamen Yeastar Information Technology Co. Ltd.
39. Yamaha Corporation
40. Zayo Group
LLC
41. Zoho Corporation Pvt. Ltd.
42. Zoom Video Communications Inc.