A multitude of services, from a list of carriers, all on one bill, with one point of contact.


Managed End-to-end connections gives you with quality, scalability, and reliability to keep you connected.

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Voice & Data

Our voice and data services span from traditional voice for single or multi-location businesses to complex enterprise solutions.

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Work where and when you want with the powerful features of a cloud phone system, with enterprise class features.

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Flexible Connectivity Options Simplify Your Network and Reduce Expenses.

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Managed Connectivity

Comtech21’s Managed Connectivity simplifies the complexities of integrating cloud communications solutions into IP networks. You need  voice, video, and data solutions that you can count on, but don’t have the time or resources to manage, monitor, or troubleshoot a complex multi-vendor solution. Comtech21 has the answer to equip your business with fast, secure, and reliable services.

  • SD-WAN
  • MPLS Mesh
  • IPsec VPN Remote Access
  • Business Internet
  • Ethernet Private Networking
  • SIPTrunking
  • MPLSMesh
  • Dedicated Internet Access
  • FlexPRI and Analog Services
  • ConferenceServices
  • LongDistance SIP Termination/Origination

Voice & Data Services

Comtech21 brings together all the advantages of Internet, SIP Trunking, Local, Long Distance, MPLS-VPN, and Conferencing services in one place. We combine the best rates and support, the broadest nationwide service footprint, and a single point of contact and one easy-to-read bill with a broad range of underlying service providers.

Cloud Communications

We offer complete cloud hosting services located in both our Wallingford, Connecticut and our Boston, Massachusetts data centers.  The service is metered and can be configured to meet your needs. Our cloud solutions are highly secure and custom designed specifically for companies looking to host in a very secure cloud environment.

  • Cloud Backup and Disaster Recovery
  • Cloud Computing and Virtual Infrastructure
  • Unified Communications as a Service (UCaaS)
  • Security (SaaS)
  • Dedicated hosting
  • Managed hosting
  • Migration support
  • Local
  • Long Distance
  • TollFree
  • Conferencing
  • VoIP
  • SIP Trunking

Long Distance

Since 2001 Comtech21 has been an established telecommunications carrier. We are certified and tariffed to deliver traffic throughout the U.S. and Canada. With our advanced routing, we are able to offer the most competitive rates available. In addition, we pride ourselves on delivering first class customer service and billing that you won’t get anywhere else. Whether your company has traditional phone equipment or modern IP enabled systems, Comtech21 has you covered.

Quality support and superior service form the foundation of our Agent Program. By providing our agents with a diverse service offering, competitive pricing and access to over 30 network providers, Comtech21 has created the world's premier Certified Agent Program. Come see what Comtech21's Agent Program can do for you.