Denver Business Phone Service That Delivers
July 1, 2026
What Denver businesses should expect from a phone provider: reliable calling, mobile access, hands-on setup and local support.
Las Vegas 702-505-4280 · Denver 720-826-5700
Denver, Colorado
Business VoIP phone service in Denver
Phone Service USA gives Denver businesses a complete cloud phone system with free phones, programmed and ready to go. Our office is on 17th Street in downtown Denver, so you work with a local team.
What Denver businesses get
- Free Yealink phones, programmed before they arrive
- Auto attendant with a professional greeting
- Call groups so calls ring the right people
- Mobile app for staff in the field
- Unlimited long distance
- No long-term contract
- Same-day emergency setup, phones included
Keep your 303 or 720 number
Your customers already know your number. We move your existing Denver numbers to our service, including 303 and 720 numbers, and handle the paperwork. Need a new local number? We can set that up too.
Serving the whole Denver metro
We set up businesses across the Front Range, including:
Denver
Aurora
Lakewood
Littleton
Englewood
Centennial
Arvada
Westminster
Thornton
Broomfield
Boulder
Golden
Highlands Ranch
Parker
Castle Rock
Need a technician on-site? We visit businesses throughout the Denver metro.
Switching is simple
01
Tell us about your team
How many lines, who answers what, and when. We design your call flow.
02
We program your phones
Your free phones arrive set up and ready to plug in. No box of hardware to figure out.
03
Keep your number and go live
We move your existing numbers over and switch you with no downtime.
Who we work with in Denver
We work with businesses in every industry across the Denver metro, including medical and dental offices, law firms, construction companies, and auto dealers and repair shops. Whether you have two phones or fifty, we set up a system that fits how your team works.
Visit or call our Denver office
Phone Service USA – Denver
600 17th Street, Suite 2800 South, Denver, CO 80202
720-826-5700 · Main line 844-426-3322
Monday–Friday, 9 a.m. to 5 p.m. Mountain Time
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Get a Denver quote today
Free phones, free setup, local support.