1. AT&T Inc.
2. Cisco Systems Inc.
3. Deutsche Telekom AG
4. Huawei Technologies Co. Ltd.
5. IBM Corporation
6. Juniper Networks Inc.
7. Logicalis Group
8. Nokia Corporation
9. NTT Communications Corporation
10. Orange Business Services
11. Singapore Telecommunications Limited
12. Telefonaktiebolaget LM Ericsson
13. Telus Corporation
14. Verizon Communications Inc.
15. VMware Inc.
16. ZTE Corporation