1. Accelink Technology Co. Ltd.
2. ADTRAN Holdings Inc.
3. Alfocom Technology Co. Ltd.
4. Allied Telesis Holdings K.K.
5. Altice International S.? r.l.
6. AM?RICA M?VIL
S.A.B. DE C.V.
7. AT&T Inc.
8. Bharat Sanchar Nigam Limited
9. Bharati Airtel Ltd.
10. Broadcom Inc.
11. Calix Inc.
12. Cisco Systems Inc.
13. CommScope Holding Company Inc.
14. Corning Incorporated
15. Dialogic Corporation
16. Fiber Optic Telecom Co. Ltd.
17. FiberHome Telecommunication Technologies Co. Ltd.
18. Fibernet Ltd.
19. Fujikura Ltd.
20. Fujitsu Limited
21. Furukawa Electric Co. Ltd.
22. HFCL Ltd.
23. Huawei Technologies Co. Ltd.
24. Infinera Corporation
25. MTN Group Management Services (Pty) Ltd.
26. NEC Corporation
27. Nippon Telegraph and Telephone Corporation
28. Nokia Corporation
29. Pactech Inc.
30. Prysmian S.p.A
31. Shanghai Sun Telecommunication Co. Ltd.
32. Sopto Technologies Co. Ltd.
33. Sterlite Technologies Ltd.
34. Sumitomo Electric Industries
Ltd.
35. Telefonaktiebolaget LM Ericsson
36. Telkom SA SOC Limited
37. Tellabs Access
LLC
38. Verizon Communications Inc.
39. VIAVI Solutions Inc.
40. Vodafone Group PLC
41. Wuhan Yilutong Technology Co. Ltd.
42. ZTE Corporation
43. ZTT International Limited