Welcome to Denver Telephone Company

What we do

Business Telephone Systems


 Avaya Esi NEC

            Norstar Vodavi           

New / Refurbished / Pre owned

We guarantee everything we sell. (Contact us for details)

New equipment is also backed by the manufactures warranty.  

Business Telephone Systems, VOIP  Networks, Voice Mail, Security Cameras, Automated Systems, Intercoms, Paging.


Connecting Denver Since 1982

Repairs are completed onsite, same day. Emergency service in one hour.

We provide Equipment and Programming for the systems listed and most major brands.

Cabling- Voice and Data.Buildings, Residential, Aerial, Underground, 

 One outlet or complete networks.

Installations, Moves, Upgrades,

 Testing and Repair. System and Network Design

Free estimates

What are people saying?

Most of our jobs come from repeat clients and referrals

“Denver Telephone Company has been fantastic to work with and have quickly been able to resolve any issues that we have experienced with our system. Our business is dependent on having a reliable phone service, and it is very reassuring to know that they will be there to support us if anything goes wrong.”

Contact Us

Denver Telephone Company

P.O. Box 101551

Denver, Colorado. 80250

 Emergency 24/7

 Phone 303-238-4747 



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