1. Accenture PLC
2. Amdocs Group
3. Broadcom Inc.
4. Ciena Corporation
5. Cisco Systems Inc.
6. Dell Inc.
7. Fortinet Inc.
8. Fujitsu Limited
9. Hewlett Packard Enterprise Development LP
10. Huawei Technologies Co. Ltd.
11. Intel Corporation
12. International Business Machines Corporation
13. Mavenir Systems Inc.
14. Microsoft Corporation
15. NEC Corporation
16. Netscout Systems Inc.
17. Nokia Corporation
18. Oracle Corporation
19. Palo Alto Networks
20. Radisys Corporation
21. Ribbon Communications Inc.
22. Telefonaktiebolaget LM Ericsson
23. Wind River Systems Inc.
24. ZTE Corporation