Telecommunications companies in Connecticut are pivotal in connecting people and businesses through communication technology. These firms range from large-scale internet providers to specialized service retailers, focusing on services like broadband internet, mobile communications, and cloud solutions. The industry is trending towards more comprehensive connectivity options, embracing advancements such as 5G technology and fiber optics to improve user experiences. As digital transformation accelerates, the demand for reliable telecommunications will continue to rise, requiring companies to innovate and adapt to meet the growing needs for speed, security, and accessibility in communication.

The telecommunications companies in this list vary considerably in size and specialization. With operations ranging from small local firms to major corporations, they are headquartered across Connecticut. Established from the 1940s to the 2000s, these companies provide a wide range of services including mobile devices, fiber optics, and managed IT solutions. They aim to address evolving connectivity demands, catering to both individual consumers and businesses, while showcasing their prominence within the state's technology landscape.

Continue reading to explore the top telecommunications companies in Connecticut.

Top 23 Telecommunications Companies in Connecticut

1. Spectrum Business

• Website: spectrum.com
• Ownership type: Corporate
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $11.4M, September 2023
• Founded year: 1989
• Headcount: 10001+
• LinkedIn: spectrum-business

Spectrum Business, a division of Charter Communications, is a telecommunications provider based in Stamford, Connecticut. Founded in 1989, the company has grown to serve a wide range of customers across the United States, offering services such as high-speed internet, cable television, mobile phone services, and home phone solutions. Spectrum Business focuses on delivering connectivity solutions that are essential for both entertainment and communication. Their internet services boast speeds up to 1 Gbps, catering to the demands of modern households and businesses alike. Additionally, Spectrum Business provides tailored solutions for small to medium-sized enterprises, ensuring they have the necessary tools to stay connected and competitive. The company has recently secured funding, indicating ongoing investment in their infrastructure and service capabilities, which further solidifies their position in the telecommunications industry.

2. Wireless Zone LLC

• Website: wirelesszone.com
• Ownership type: Corporate
• Headquarters: Rocky Hill, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: November 2016
• Founded year: 1988
• Headcount: 1001-5000
• LinkedIn: wireless-zone-llc

Wireless Zone LLC, founded in 1988 and based in Rocky Hill, Connecticut, is a telecommunications retailer that specializes in wireless services and products. As a Verizon Authorized Retailer, Wireless Zone offers a variety of mobile devices, home internet solutions, and service plans tailored for both individual consumers and small businesses. Their offerings include 5G home internet, LTE home internet, and Fios home internet, alongside various Verizon mobile plans. The company operates numerous physical stores across the United States, complemented by an online platform that enhances customer engagement and service delivery. With a workforce of approximately 878 employees, Wireless Zone is positioned to meet the connectivity needs of its customers effectively. Their commitment to customer service and community involvement is evident through initiatives like Wireless Zone Gives and franchise opportunities, further solidifying their role in the telecommunications sector.

3. AT&T - Get Wireless Now

• Website: getwirelessnow.com
• Ownership type: Private
• Headquarters: Guilford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1986
• Headcount: 51-200
• LinkedIn: attgetwirelessnow

AT&T - Get Wireless Now is a telecommunications company based in Guilford, Connecticut, founded in 1986. The company specializes in wireless products and services, including mobile phones, tablets, and cybersecurity solutions. They serve a variety of clients, notably first responders and businesses, ensuring effective communication and technology support tailored to their needs. Operating through retail locations, Get Wireless Now emphasizes customer satisfaction and offers dedicated service teams to assist clients. Their business services extend to fleet and asset tracking, Internet of Things (IoT) solutions, and customized office phone services, reflecting their commitment to meeting the evolving demands of the telecommunications market. The company is privately owned and employs around 99 individuals, focusing on providing reliable and innovative solutions to enhance connectivity for their customers.

4. CORE Communications, LLC

• Website: corecommllc.com
• Ownership type: Private
• Headquarters: Suffield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 87%, Canada 13%
• Founded year: 1996
• Headcount: 11-50
• LinkedIn: core-communications-llc

CORE Communications, LLC, based in Suffield, Connecticut, has been operational since 1996. This private company specializes in telecommunications consulting, focusing on managing voice and data services for various organizations. With a team of around 31 employees, CORE Communications provides tailored solutions that help clients significantly reduce their telecom costs—often by 25-35% within the first year of engagement. Their services include comprehensive inventories of voice and data systems, procurement of carrier services, and ongoing support for telecom infrastructure. CORE has developed expertise in specific industries such as real estate, healthcare, and non-profit organizations, allowing them to offer insights that are both practical and informed by industry-specific knowledge. Their approach emphasizes strategic management and cost containment, making them a valuable partner for organizations looking to optimize their communication systems without the need for large-scale telecom infrastructure investments.

5. Sertex Broadband

• Website: sertexbroadband.com
• Ownership type: Private
• Headquarters: Plainfield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1998
• Headcount: 51-200
• LinkedIn: sertex-utilty-services

Sertex Broadband Solutions, based in Plainfield, Connecticut, is a private telecommunications company founded in 1998. The firm specializes in fiber optic infrastructure services, providing essential solutions such as fiber-to-the-home networks and network construction services. Sertex is dedicated to bridging the digital divide, particularly in underserved communities, by delivering high-speed internet access. Over the years, they have constructed thousands of miles of fiber networks, demonstrating their expertise in the field. Their services range from planning and design to construction and ongoing maintenance, ensuring that clients receive comprehensive support throughout the project lifecycle. Sertex has established itself as a trusted partner for municipalities and businesses, helping them to develop robust broadband networks that meet the demands of the digital age.

6. JKS Systems, LLC

• Website: jks-systems.com
• Ownership type: Private
• Headquarters: Marlborough, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2005
• Headcount: 51-200
• LinkedIn: jks-systems-llc

JKS Systems, LLC is an IT solutions provider based in Marlborough, Connecticut, established in 2005. The company specializes in infrastructure, collaboration, and security services tailored primarily for businesses and organizations. Their product offerings include audio and video systems, internet services, and battery backup solutions. JKS Systems plays a significant role in the telecommunications industry by providing essential services such as voice over IP (VoIP) and carrier services, which facilitate effective communication and connectivity for their clients. The company is committed to ensuring that its clients have reliable IT support and communication systems, making it a valuable partner for organizations looking to enhance their operational efficiency.

7. Phonetel, Inc

• Website: phonetelinc.com
• Ownership type: Private
• Headquarters: Wallingford, Connecticut, United States (USA)
• Founded year: 1998
• Headcount: 11-50
• LinkedIn: phonetel-inc

Phonetel, Inc., now known as Link Solutions, is a telecommunications and security service provider based in Wallingford, Connecticut. Founded in 1998, the company has built a reputation for delivering a wide array of services tailored to meet the needs of both businesses and consumers. Their offerings include traditional PBX systems, cloud-hosted solutions, structured cabling, and advanced security systems such as surveillance cameras and burglar alarms. Phonetel has evolved over the years, launching specialized divisions like oneTEL for hosted PBX services and oneSECURE for security solutions. This evolution reflects their responsiveness to market demands and technological advancements. With a dedicated team of professionals, Phonetel ensures that all installations and services are performed to high standards, reinforcing their commitment to customer satisfaction and operational excellence.

8. Connecticut Communications

• Website: ctcom.com
• Ownership type: Private
• Headquarters: Durham, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1974
• Headcount: 11-50
• LinkedIn: connecticut-communications

Connecticut Communications, based in Durham, Connecticut, is a private telecommunications and IT service provider that has been in operation since 1974. With a workforce of approximately 27 employees, the company focuses on delivering voice and data solutions, managed IT services, and security to businesses across various sectors. Their extensive experience of over 50 years allows them to offer customized solutions that cater to the unique needs of their clients. Connecticut Communications provides a range of services, including the installation and maintenance of business telephone systems from brands like Mitel, NEC, and RingCentral. They also design and manage LAN/WAN networks, ensuring robust communication systems for their customers. Their commitment to service excellence is evident in their proactive approach to customer support, which includes remote capabilities and on-site assistance when necessary. This dedication to client satisfaction and their comprehensive service offerings solidify their role in the telecommunications industry.

9. Siemon

• Website: siemon.com
• Ownership type: Private
• Headquarters: Watertown, Connecticut, United States (USA)
• Employee distribution: United States (USA) 41%, India 14%, Mexico 9%, Other 37%
• Founded year: 1903
• Headcount: 501-1000
• LinkedIn: the-siemon-company

The Siemon Company, founded in 1903 and based in Watertown, Connecticut, is a telecommunications firm that specializes in high-performance IT infrastructure solutions. With a workforce of approximately 484 employees, Siemon focuses on providing a range of products and services, including advanced cabling systems and data center solutions. Their offerings cater primarily to businesses and organizations in the telecommunications and IT sectors, addressing the increasing demand for reliable and scalable connectivity. Siemon's solutions are integral to data centers, smart buildings, and cellular networks, ensuring that organizations can meet their evolving connectivity needs. The company also emphasizes innovation, regularly developing new solutions to enhance system performance and support emerging technologies, such as generative AI and next-generation Wi-Fi. Their commitment to quality and customer service has earned them a solid reputation among global clients, making them a notable player in the telecommunications industry.

10. Tmc

• Website: tmcnet.com
• Ownership type: Private
• Headquarters: Shelton, Connecticut, United States (USA)
• Employee distribution: United States (USA) 62%, United Kingdom (UK) 6%, Zambia 6%, Other 25%
• Founded year: 1972
• Headcount: 51-200
• LinkedIn: tmc_60911

Technology Marketing Corporation (TMC), founded in 1972 and based in Shelton, Connecticut, is a private media and technology company. TMC specializes in delivering news, analysis, and research focused on telecommunications and technology. They produce several publications, including Internet Telephony Magazine and Cloud Computing Magazine, which provide insights into industry trends and innovations. TMC also organizes events such as the ITEXPO and the Future of Work Expo, which gather professionals from various sectors to discuss advancements and challenges in telecommunications. Their services extend to webinars and online communities that support businesses in enhancing customer experiences and adopting new technologies. TMC's commitment to fostering communication and collaboration within the industry positions them as a notable entity in the telecommunications space.

11. Spot On Networks

• Website: spotonnetworks.com
• Ownership type: Private
• Headquarters: North Haven, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Crowdfunding, July 2012
• Founded year: 2004
• Headcount: 11-50
• LinkedIn: spot-on-networks

Spot On Networks, founded in 2004 and based in North Haven, Connecticut, is a telecommunications provider that specializes in managed Wi-Fi and cellular solutions for multifamily and commercial properties. The company offers a range of services, including Wi-Fi calling and CellBoost, aimed at ensuring reliable connectivity for residents and guests. Their clientele spans various sectors, such as affordable housing, hospitality, and student housing, highlighting their commitment to bridging the digital divide. Spot On Networks employs patented technologies, such as the Tessellated Grid Design, to enhance connectivity and security for users. With a dedicated 24/7 support system, they focus on delivering seamless wireless experiences tailored to the unique needs of property owners and managers.

12. Data-Link Corp

• Website: datalinkcorp.com
• Ownership type: Private
• Headquarters: Meriden, Connecticut, United States (USA)
• Founded year: 1986
• Headcount: 1-10
• LinkedIn: data-link-corp

Data-Link Corporation, based in Meriden, Connecticut, has been a player in the telecommunications industry since its founding in 1986. The company specializes in structured cabling, voice and data solutions, access control, and audio-visual systems. With a focus on serving businesses and organizations, Data-Link provides essential technology infrastructure and installation services tailored to meet specific communication and security needs. The firm prides itself on its commitment to customer service and quality installations, backed by extended warranties. Data-Link is also recognized as a Service Disabled Veteran Owned Small Business (SDVOSB), participating actively in the Vets First Contracting Program. This certification reflects its dedication to high performance and service, particularly for state and federal clients. The company has built a portfolio that includes a variety of industries, such as education, healthcare, and municipal services, showcasing its ability to adapt to different project requirements. However, it operates with a small team, which may limit its scalability and market presence compared to larger telecommunications firms.

13. P2 Software Sales and Managed Services

• Website: p2telecom.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: p2-business-solutions

P2 Software Sales and Managed Services, known as P2 Telecom, is a private technology solutions provider based in Stamford, Connecticut. Founded in 2007, the company has carved out a niche in the telecommunications and cloud services sector. P2 Telecom specializes in a range of offerings, including Unified Communications as a Service (UCaaS), Contact Center as a Service (CCaaS), security solutions, and mobility management. They primarily serve Managed Service Providers (MSPs) and businesses, acting as a distributor and solutions broker. This role enables them to assist clients in navigating their technology needs and enhancing operational efficiency. P2 Telecom has established strong partnerships with top telecommunications and cloud companies, which bolsters their credibility and service offerings. Their commitment to innovation and support for over 1,000 partners and advisors highlights their active involvement in the industry, making them a relevant player in the telecommunications space.

14. ComNet Communications, LLC

• Website: comnetcomm.com
• Ownership type: Corporate
• Headquarters: Bethel, Connecticut, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: December 2016
• Founded year: 1984
• Headcount: 201-500
• LinkedIn: comnetcommunications

ComNet Communications, LLC, based in Bethel, Connecticut, has been a player in the technology services sector since its founding in 1984. The company specializes in network infrastructure solutions, offering a range of services that include structured cabling, audio-visual systems, wireless solutions, and security services. With a workforce of approximately 325 employees, ComNet operates through regional offices across the United States, ensuring they can provide nationwide support to their enterprise clients. Their projects span various industries, including healthcare, finance, education, and entertainment, showcasing their ability to adapt to different market needs. ComNet has built a reputation for reliability and expertise, which is critical in the fast-evolving telecommunications landscape. They have not reported any recent funding, indicating a stable operational model that relies on their established client base and service offerings.

15. Hilltop Technologies

• Website: hilltoptech.com
• Ownership type: Private
• Headquarters: Suffield, Connecticut, United States (USA)
• Founded year: 1999
• Headcount: 11-50
• LinkedIn: hilltop-technologies-llc

Hilltop Technologies, also known as intlx Solutions, is a technology solutions provider based in Suffield, Connecticut. Founded in 1999, the company specializes in delivering business technology solutions and consulting services tailored to the needs of various organizations. Their service portfolio includes managed services, carrier services, and professional services, which are designed to enhance operational efficiency and improve customer interactions. intlx Solutions focuses on critical areas such as contact center solutions, infrastructure management, security, unified communications, and workforce management. The company has experienced steady growth, expanding its service offerings and customer base over the years. As a subsidiary of Quantech Services, Inc., intlx Solutions benefits from a robust leadership team with extensive experience in the industry. Their commitment to sustainability and innovative technology solutions further underscores their relevance in the telecommunications sector.

16. Brookfield Technology Center

• Website: btcamerica.com
• Ownership type: Private
• Headquarters: New Milford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2005
• Headcount: 11-50
• LinkedIn: brookfield-technology-center

Brookfield Technology Center, established in 2005 and located in New Milford, Connecticut, is a private managed services provider. The company specializes in IT support, telecommunications, and security systems, offering a comprehensive suite of services that includes infrastructure management, VoIP systems, and surveillance solutions. With a team of 11 to 50 employees, Brookfield Technology Center partners with businesses across various sectors to enhance their technology resources and ensure robust cybersecurity measures. Their telecommunications services include the installation and maintenance of VoIP systems, traditional telephone systems, and network infrastructure, making them a valuable resource for organizations seeking to improve their communication capabilities. As a Native American and Woman Owned Business, they also emphasize their commitment to community and diversity in their operations.

17. Nutmeg Technologies

• Website: nutmegtech.com
• Ownership type: Private
• Headquarters: Enfield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1999
• Headcount: 11-50
• LinkedIn: nutmeg-technologies

Nutmeg Technologies, founded in 1999 and based in Enfield, Connecticut, is a private IT service provider that specializes in managed IT services, cloud solutions, and unified communications. With a team of approximately 21 employees, the company focuses on delivering tailored technology solutions to small and medium-sized businesses across various sectors, including healthcare, legal, financial, and education. Nutmeg Technologies emphasizes proactive support and infrastructure management, helping clients navigate their IT challenges effectively. Their services include managed IT support, network management, and voice solutions, which are crucial for enhancing communication and operational efficiency. The company has established partnerships with notable technology providers, allowing them to implement effective infrastructure and telephony solutions. Nutmeg Technologies is a 100% woman-owned business, reflecting a commitment to diversity in the tech industry.

18. Marcus Communications

• Website: marcuscommunications.com
• Ownership type: Private
• Headquarters: Manchester, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1969
• Headcount: 11-50
• LinkedIn: marcus-communcations

Marcus Communications, founded in 1969 and based in Manchester, Connecticut, is a communication solutions provider that specializes in delivering reliable technology and services tailored to various sectors, including public safety, education, and transportation. The company offers a range of products such as two-way radios, CCTV systems, and other communication infrastructure. Their business model emphasizes partnership and customer support, ensuring that clients receive effective communication solutions, especially in critical situations. Marcus Communications also provides services like project management, custom installations, and emergency support, which are crucial for their clientele. The company has built a reputation for technical excellence and responsiveness, serving a variety of clients from local police departments to educational institutions and transportation services. Their commitment to service is evident in their 24/7 emergency support, which prioritizes public safety needs.

19. NetSource, Inc.

• Website: netsource-inc.com
• Ownership type: Private
• Headquarters: Manchester, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1993
• Headcount: 51-200
• LinkedIn: netsource-inc.

NetSource, Inc., founded in 1993 and based in Manchester, Connecticut, is a connectivity solutions provider that specializes in fiber optic and copper products. The company has evolved significantly since its inception, starting with a focus on copper patch cords and expanding into fiber optics in 1998. Over the years, NetSource has broadened its product line to include multistrand fiber trunks, enterprise connectivity components, and Outside Plant (OSP) and FTTx fiber cabling. Their commitment to quality is underscored by their ISO 9001:2015 certification. NetSource serves a variety of sectors, including telecommunications, healthcare, and education, and emphasizes customer service and timely delivery. The company has also invested in expanding its facilities to enhance production capabilities, reflecting its growth and responsiveness to market demands.

20. Ventus

• Website: ventusgns.com
• Ownership type: Corporate
• Headquarters: Norwalk, Connecticut, United States (USA)
• Employee distribution: United States (USA) 97%, Nigeria 3%
• Latest funding: $347.4M, November 2021
• Founded year: 1999
• Headcount: 51-200
• LinkedIn: ventus-wireless

Ventus is a managed network service provider based in Norwalk, Connecticut, established in 1999. The company specializes in Managed Network-as-a-Service (NaaS) solutions, focusing on SD-WAN, Hybrid WAN, and Cellular WAN technologies. Ventus caters to a variety of industries, including financial institutions, healthcare, restaurants, and retail, providing them with reliable network connectivity and support services. With a commitment to customer satisfaction, Ventus ensures high availability and security in its network solutions. The company has a workforce of approximately 88 employees and operates primarily in the United States, with a small presence in Nigeria. In November 2021, Ventus received significant funding, which underscores its growth potential and strategic importance in the telecommunications sector. The acquisition by Digi International further enhances its capabilities and market reach, solidifying its role in the industry.

21. Wise Components, Inc.

• Website: wisecomponents.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1975
• Headcount: 11-50
• LinkedIn: wise-components

Wise Components, Inc., founded in 1975 and based in Stamford, Connecticut, is a private distributor that specializes in OEM and datacom solutions. With a workforce of 27 employees, the company has carved out a niche in providing a wide array of electronic components, cabling systems, and maintenance supplies. Their clientele spans various sectors, including healthcare, education, and government, reflecting their adaptability to different operational needs. Wise Components prides itself on its commitment to quality service and timely delivery, ensuring that clients receive the right products when they need them. The company has developed a strong reputation for supporting the infrastructure of data communication, voice, and security networks, making it a strategic partner for organizations looking to enhance their telecommunications capabilities. Their ISO 9001:2015 certification underscores their dedication to maintaining high standards in quality management, further solidifying their role in the telecommunications supply chain.

22. Amphenol Times Fiber

• Website: timesfiber.com
• Ownership type: Private
• Headquarters: Wallingford, Connecticut, United States (USA)
• Founded year: 1948
• Headcount: 201-500
• LinkedIn: amphenol-times-fiber

Amphenol Times Fiber, operating under the umbrella of Amphenol Broadband Solutions, is a manufacturer based in Wallingford, Connecticut. Founded in 1948, the company specializes in interconnect products tailored for the telecommunications and broadband sectors. Their extensive product range includes coaxial cables, fiber solutions, RF components, and various connectors, all designed to support broadband service providers and telecommunications companies. Amphenol Times Fiber emphasizes innovation and sustainability, ensuring that their products meet the evolving demands of modern communication networks. They also provide training and support to technicians, enhancing the reliability and efficiency of network installations. With a global manufacturing presence, the company is well-positioned to respond to customer needs in a timely manner.

23. Utility Communications Inc

• Website: utilitycommunications.com
• Ownership type: Private
• Headquarters: Hamden, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1970
• Headcount: 11-50
• LinkedIn: utility-communications-inc

Utility Communications Inc, based in Hamden, Connecticut, has been operational since 1970. This private company specializes in communication solutions, particularly in the sales and service of two-way radios and advanced security systems. They cater to a variety of sectors, including public safety and healthcare, providing products such as voice recording solutions, video security systems, and dispatch management software. With a workforce of 34 employees, Utility Communications Inc focuses on integrating voice, video, and data solutions to meet the needs of businesses and organizations. Their commitment to enhancing communication capabilities is evident in their extensive service offerings, which include system design, installation, and maintenance. They also provide rental solutions and wide area radio coverage, further solidifying their position in the telecommunications industry.

Telecommunications Insights: Key Companies in Connecticut

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