65/100IFR Score
Ranked #1 because of its Google rating and service focus: 5.0★ from 131 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Best Business Phone System Providers in Windsor, CO (2026)
55 business phone system providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Windsor: Total Wireless, IFR Score 65/100; 5.0★ from 131 Google reviews; open 7 days a week.
- 5
Most-reviewed: Total Wireless, 180 Google reviews at 5.0★, the most of 55 ranked; ranked #5.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
55 Windsor business phone system providers are ranked here by IFR Score, from nine published factors. 16 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.7★ across 55 rated IT firms.
Most of this list also appears on the Business phone system providers in Fort Collins ranking. See Business phone system providers in Fort Collins
Top 10 business phone system providers in Windsor at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Total Wireless | 65 | 5.0★ (131) | Brighton, 35 mi away | Sat · Sun · Evenings | Overall |
| 2 | ALLO Fiber | 61 | 4.8★ (50) | Greeley, 6 mi away | — | — |
| 3 | Backbone Cabling LLC | 59 | 5.0★ (32) | Loveland, 10 mi away | — | — |
| 4 | Liberty Communications/FlexFone | 58 | 5.0★ (37) | Westminster, 39 mi away | Sat | — |
| 5 | Total Wireless | 57 | 5.0★ (180) | Commerce City, 46 mi away | Sat · Sun · Evenings | Most reviews |
| 6 | Total Wireless | 56 | 4.8★ (22) | Arvada, 47 mi away | Sat · Sun · Evenings | — |
| 7 | Union Wireless | 56 | 4.4★ (65) | Cheyenne, 46 mi away | — | — |
| 8 | Sage Telecommunications | 56 | 4.1★ (9) | Fort Collins, 11 mi away | — | — |
| 9 | Talk Shop-Wyco Communications | 56 | 4.1★ (9) | Greeley, 11 mi away | — | — |
| 10 | Link Light Network & AV Solutions | 55 | 5.0★ (7) | Loveland, 10 mi away | Sat | — |
The 55 best business phone system providers in Windsor, ranked
Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
#2 ALLO Fiber
Based in Greeley, 6 mi away
61/100IFR ScoreRanked #2 because of its Google rating and service focus: 4.8★ from 50 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Loveland, 10 mi away
59/100IFR ScoreRanked #3 because of its Google rating and service focus: 5.0★ from 32 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Westminster, 39 mi away
58/100IFR ScoreRanked #4 because of its Google rating and service focus: 5.0★ from 37 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Commerce City, 46 mi away
57/100IFR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 180 Google reviews, the most in Windsor.
Based on 8 of 9 factors; recency not yet collected.
Based in Arvada, 47 mi away
56/100IFR ScoreRanked #6 because of its Google rating and service focus: 4.8★ from 22 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Cheyenne, 46 mi away
56/100IFR ScoreRanked #7 because of its Google rating and service focus: 4.4★ from 65 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Fort Collins, 11 mi away
56/100IFR ScoreRanked #8 because of its Google rating and service focus: 4.1★ from 9 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 7 of 9 factors; recency and availability not yet collected.
Based in Greeley, 11 mi away
56/100IFR ScoreRanked #9 because of its Google rating and service focus: 4.1★ from 9 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 7 of 9 factors; recency and availability not yet collected.
Based in Loveland, 10 mi away
55/100IFR ScoreRanked #10 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Westminster, 44 mi away
55/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 30 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
#12 Avaya
Based in Thornton, 39 mi away
55/100IFR ScoreRanked #12 because of its Google rating and service focus: 4.0★ from 23 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 7 of 9 factors; recency and availability not yet collected.
Based in Johnstown, 10 mi away
55/100IFR ScoreRanked #13 because of its Google rating and service focus: 4.5★ from 6 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 7 of 9 factors; recency and availability not yet collected.
#14 Total Wireless
Based in Denver, 44 mi away
55/100IFR ScoreRanked #14 because of its Google rating and service focus: 5.0★ from 12 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
#15 Total Wireless
Based in Greeley, 10 mi away
54/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Denver, 49 mi away
54/100IFR ScoreRanked #16 because of its Google rating and service focus: 4.7★ from 19 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 7 of 9 factors; recency and availability not yet collected.
#17 Total Wireless
Based in Boulder, 37 mi away
54/100IFR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 78 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#18 Pro-IS
Based in Fort Collins, 8 mi away
54/100IFR ScoreRanked #18 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
#19 Total Wireless
Based in Thornton, 43 mi away
54/100IFR ScoreRanked #19 because of its Google rating and service focus: 5.0★ from 9 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Johnstown, 11 mi away
54/100IFR ScoreRanked #20 because of its Google rating and service focus: 4.5★ from 8 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Fort Collins, 10 mi away
53/100IFR ScoreRanked #21 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Thornton, 43 mi away
53/100IFR ScoreRanked #22 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Denver, 48 mi away
52/100IFR ScoreRanked #23 because of its Google rating and service focus: 3.2★ from 6 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Longmont, 23 mi away
52/100IFR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 69 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#25 Greeley DSL
Based in Greeley, 12 mi away
52/100IFR ScoreRanked #25 because of its Google rating and service focus: 1.0★ from 5 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
How we ranked Windsor business phone system providers
We scored 55 Windsor business phone system providers on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Windsor data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a business phone system provider
- Ask whether the system is cloud-hosted or installed on site, and who maintains it.
- Check internet capacity and backup: a cloud phone system stops when your connection does.
- Ask how 911 locations are registered for each phone and for remote staff.
- Compare per-user prices on the same features (call recording, queues, integrations).
- Ask for two or three references from clients of your size and industry, and call them.
- Get the scope, response times and price in writing before you sign, including how you leave and get your data back.
Questions to ask a business phone system provider
- Is the price per user, and which features are extra?
- Will you port our existing numbers, and how long does it take?
- What happens to calls if our internet connection goes down?
- How are 911 locations set up for office and remote staff?
- Who do we call for support, and during which hours?
- What is the contract length, and are phones bought or leased?
Terms explained
- MSP (managed service provider)
- A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
- Co-managed IT
- An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
- Break-fix
- IT support paid per incident or per hour, with no monthly agreement.
- SLA (service-level agreement)
- The contract terms for response and resolution times, uptime and support hours.
- Help desk
- The support line staff call or email for IT problems.
- RMM
- Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
- vCIO
- A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
- MSSP
- A managed security service provider: a firm that monitors and manages security tools around the clock.
- EDR / MDR
- Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
- MFA
- Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
- Penetration test
- An authorised, simulated attack on your systems to find weaknesses before criminals do.
- SOC 2
- An independent auditor’s report (AICPA standard) on a service provider’s security controls.
Business phone system providers in Windsor: frequently asked questions
Who is the best business phone system provider in Windsor?
By IFR Score, the highest-ranked business phone system provider in Windsor, CO is Total Wireless with an IFR Score of 65/100. It has 5.0★ from 131 Google reviews. It is open 7 days a week. ALLO Fiber (#2) and Backbone Cabling LLC (#3) follow. We ranked 55 business phone system providers on nine factors, last updated November 9, 2026.
How many business phone system providers are there in Windsor?
ITFirmsRanked ranks 55 business phone system providers serving Windsor, CO. Counts are as of November 2026.
Which business phone system providers in Windsor work on weekends?
16 of 55 ranked business phone system providers post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Total Wireless (#1), Liberty Communications/FlexFone (#4) and Total Wireless (#5). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Windsor business phone system providers have?
The median Google rating among 55 rated business phone system providers in Windsor is 4.7★, with a median of 9 reviews. Total Wireless has the most, 180 reviews, and ranks #5. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank business phone system providers?
Each business phone system provider gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.
Do business phone system providers outside Windsor count in this ranking?
Yes, if they are within 50 mi of the Windsor city center, our service radius for business phone system providers. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.
Can business phone system providers pay to rank higher on ITFirmsRanked?
No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.
What does a business phone system provider do?
Business phone system providers set up and support office phone systems, mostly cloud VoIP today: numbers, desk phones, call routing, voicemail and contact-centre features.
How are business phone system providers in Windsor ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does business phone systems and VoIP, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
Can we keep our phone numbers if we switch providers?
In most cases yes: numbers can be ported to a new provider in the US and Canada. Keep your current service active until the port is complete, and ask the new provider to manage the port request.
What about 911 calls on a VoIP system?
Each phone needs a registered location so 911 calls go to the right place. In the US, multi-line systems must support direct 911 dialling and send dispatchable location information under federal rules (Kari’s Law and RAY BAUM’S Act). Ask the provider how they set this up.
Update log for Windsor
- November 2026: IFR Scores recalculated for 55 business phone system providers serving Windsor.
More business phone system providers and Windsor pages
Business phone system providers near Windsor
- Business phone system providers in Johnstown, CO87 ranked
- Business phone system providers in Loveland, CO77 ranked
- Business phone system providers in Greeley, CO69 ranked
- Business phone system providers in Fort Collins, CO33 ranked
- Business phone system providers in Evans, CO80 ranked
- Business phone system providers in Longmont, CO104 ranked
- Business phone system providers in Firestone, CO104 ranked
- Business phone system providers in Frederick, CO106 ranked
- Business phone system providers in Erie, CO109 ranked
- Business phone system providers in Brighton, CO109 ranked