Top Companies in the Telephone Transmission Services & Equipment Industry in 2025

ADTRAN, Inc. ADTRAN, Inc. Altice USA Altice USA Charter Communications, Inc. Charter Communications, Inc. Concentrix Concentrix Dish Network Dish Network IDT Corporation IDT Corporation Comcast Cable West Division Comcast Cable West Division National Grid USA National Grid USA Nokia Corporation Nokia Corporation Premiere Global Services, Inc. Premiere Global Services, Inc. AT&T, Inc. AT&T, Inc. Foundever Foundever Toshiba America Information Systems, Inc. Toshiba America Information Systems, Inc. West Technology Group, LLC West Technology Group, LLC Comcast Cable Eastern Division Comcast Cable Eastern Division Poly Poly WideOpenWest, LLC WideOpenWest, LLC BI Incorporated BI Incorporated TracFone Wireless, Inc. TracFone Wireless, Inc. The Walt Disney Company The Walt Disney Company Vertical Communications Vertical Communications Quanta Services, Inc. Quanta Services, Inc. Westell Technologies, Inc. Westell Technologies, Inc. Charles Industries, Ltd. Charles Industries, Ltd. Cox Communications, Inc. Cox Communications, Inc. Deutsche Telekom, Inc. Deutsche Telekom, Inc. Belden, Inc. Belden, Inc. Harmonic, Inc. Harmonic, Inc. ViaSat, Inc. ViaSat, Inc. CalAmp Corporation CalAmp Corporation MasTec, Inc. MasTec, Inc. Globalive Communications Corp. Globalive Communications Corp. altafiber altafiber VTech Communications, Inc. VTech Communications, Inc. Verizon Enterprise Solutions Verizon Enterprise Solutions Comcast Corporation Comcast Corporation 8x8, Inc. 8x8, Inc. Vonage Holdings Corporation Vonage Holdings Corporation Blackboard, Inc. Blackboard, Inc. AFL Telecommunications AFL Telecommunications Comcast Cable Southern Division Comcast Cable Southern Division Bell Aliant Bell Aliant Bell Canada Bell Canada ConvergeOne ConvergeOne Curacao Curacao Windstream Communications Windstream Communications Guest-Tek Interactive Entertainment Ltd. Guest-Tek Interactive Entertainment Ltd. Ooma, Inc. Ooma, Inc. Consolidated Communications, Inc. Consolidated Communications, Inc. Comwave Telecom, Inc. Comwave Telecom, Inc. Electro-Tel Electro-Tel EastLink Cable Systems EastLink Cable Systems ATN International ATN International Hawaiian Telcom Hawaiian Telcom Aviat Networks Aviat Networks MedTel Services, Inc. MedTel Services, Inc. TDS Telecommunications, LLC TDS Telecommunications, LLC Cass Information Systems, Inc. Cass Information Systems, Inc. GoTo GoTo Genesys Genesys Airbnb, Inc. Airbnb, Inc. RingCentral, Inc. RingCentral, Inc. Numa Numa The Alexander Group The Alexander Group Viaero Wireless Viaero Wireless