Calix, Inc.
America Movil SAB de CV
Zayo Group Holdings, Inc.
VEON Ltd.
Liberty Broadband Corp.
Applied Optoelectronics, Inc.
American Electric Technologies, Inc.
BT Group Plc
GTT Communications, Inc.
Vislink Technologies, Inc.
Qwest Corp.
TURKCELL Iletisim Hizmetleri AS
TESSCO Technologies, Inc.
Asia Pacific Wire & Cable Corp.
pdvWireless, Inc.
CenturyLink, Inc.
Telecom Italia SpA
Qwest Corp.
Frontier Communications Corp.
Internet Gold-Golden Lines Ltd.
Lumentum Holdings, Inc.
Telefonica Brasil SA
Ribbon Communications, Inc.
Telecom Argentina SA
Qwest Corp.
Vonage Holdings Corp.
Mobile TeleSystems PJSC
Alaska Communications Systems Group, Inc.
Qwest Corp.
TELUS Corp.
Telephone & Data Systems, Inc.
ARRIS International Plc
T-Mobile US, Inc.
Sierra Wireless, Inc.
Intelsat SA
Infinera Corp.
CounterPath Corp.
Apple, Inc.
United States Cellular Corp.
Casa Systems, Inc.
