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Best Business Phone System Providers in Windsor, CA (2026)

32 business phone system providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Windsor: Total Wireless, IFR Score 67/100; 5.0★ from 99 Google reviews; open 7 days a week.

  2. 11

    Most-reviewed: Bay Area Tech Hero, 145 Google reviews at 5.0★, the most of 32 ranked; ranked #11.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

32 Windsor business phone system providers are ranked here by IFR Score, from nine published factors. 20 open Saturdays and 17 open Sundays, based on posted hours. The median Google rating is 4.9★ across 32 rated IT firms.

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.

Top 10 business phone system providers in Windsor at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1Total Wireless675.0★ (99)Sonoma, 25 mi awaySat · Sun · EveningsOverall
2Boost Mobile644.2★ (61)Santa Rosa, 9 mi awaySat · Sun · Evenings—
3Total Wireless634.8★ (24)Santa Rosa, 9 mi awaySat · Sun · Evenings—
4Total Wireless624.7★ (79)Fairfield, 46 mi awaySat · Sun · Evenings—
5Total Wireless624.9★ (66)Fairfield, 47 mi awaySat · Sun · Evenings—
6Total Wireless604.4★ (13)Santa Rosa, 11 mi awaySat · Sun · Evenings—
7Clear Telecommunications585.0★ (35)Santa Rosa, 8 mi awaySat—
8X2nSat564.5★ (6)Petaluma, 21 mi away——
9Total Wireless555.0★ (6)Fairfield, 47 mi awaySat · Sun · Evenings—
10Total Wireless544.9★ (74)San Pablo, 49 mi awaySat · Sun · Evenings—

The 32 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.

  1. Ranked #1 in Windsor

    Based in Sonoma, 25 mi away

    67/100IFR Score

    Ranked #1 because of its Google rating and service focus: 5.0★ from 99 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 99 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    18460 CA-12, Sonoma, CA 95476
  2. Based in Santa Rosa, 9 mi away

    64/100IFR Score

    Ranked #2 because of its Google rating and service focus: 4.2★ from 61 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.2★ from 61 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–5 PM
    Address
    443 Dutton Ave Ste 8, Santa Rosa, CA 95407
  3. Based in Santa Rosa, 9 mi away

    63/100IFR Score

    Ranked #3 because of its Google rating and service focus: 4.8★ from 24 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 24 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–5 PM
    Address
    711 Stony Point Rd #10, Santa Rosa, CA 95407
  4. Based in Fairfield, 46 mi away

    62/100IFR Score

    Ranked #4 because of its Google rating and service focus: 4.7★ from 79 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 79 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10 AM–5 PM
    Address
    1955 W Texas St Unit 3, Fairfield, CA 94533
  5. Based in Fairfield, 47 mi away

    62/100IFR Score

    Ranked #5 because of its Google rating and service focus: 4.9★ from 66 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 66 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–6 PM
    Address
    2151 N Texas St, Fairfield, CA 94533
  6. Based in Santa Rosa, 11 mi away

    60/100IFR Score

    Ranked #6 because of its Google rating and service focus: 4.4★ from 13 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.4★ from 13 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–6 PM
    Address
    2688 Santa Rosa Ave C, Santa Rosa, CA 95407
  7. Based in Santa Rosa, 8 mi away

    58/100IFR Score

    Ranked #7 because of its Google rating and review volume: 5.0★ from 35 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 35 Google reviews
    Hours
    Mon–Tue 7:45 AM–5:30 PM · Wed closed · Thu 7:45 AM–5:30 PM · Fri 7:45 AM–4:30 PM · Sat 10 AM–4 PM · Sun closed
    Address
    2544 Cleveland Ave #206, Santa Rosa, CA 95403
  8. Based in Petaluma, 21 mi away

    56/100IFR Score

    Ranked #8 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.

    • 4.5★ from 6 Google reviews
    Address
    1310 Redwood Way C, Petaluma, CA 94954
  9. Based in Fairfield, 47 mi away

    55/100IFR Score

    Ranked #9 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 6 Google reviews
    Hours
    Mon–Fri 11 AM–8 PM · Sat 10 AM–8 PM · Sun 11 AM–8 PM
    Address
    1950 N Texas St Unit A, Fairfield, CA 94533
  10. Based in San Pablo, 49 mi away

    54/100IFR Score

    Ranked #10 because of its Google rating and review volume: 4.9★ from 74 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 74 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10 AM–5 PM
    Address
    104 San Pablo Towne Center, San Pablo, CA 94806
  11. Based in Santa Rosa, 47 mi away

    54/100IFR Score

    Ranked #11 because of its Google rating and review volume: 5.0★ from 145 Google reviews, the most in Windsor.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 145 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
  12. Based in Napa, 32 mi away

    53/100IFR Score

    Ranked #12 because of its Google rating and review volume: 4.8★ from 37 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 37 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–5 PM
    Address
    2979 Jefferson St, Napa, CA 94558
  13. Based in Benicia, 49 mi away

    53/100IFR Score

    Ranked #13 because of its Google rating and service focus: 4.7★ from 12 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 12 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    325 W Channel Rd, Benicia, CA 94510
  14. Based in San Rafael, 44 mi away

    53/100IFR Score

    Ranked #14 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.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10:30 AM–5:30 PM
    Address
    330 Bellam Blvd, San Rafael, CA 94901
  15. Based in Benicia, 49 mi away

    52/100IFR Score

    Ranked #15 because of its Google rating and service focus: 5.0★ from 8 Google reviews, listed on Google as “Telecommunications contractor”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 8 Google reviews
    Hours
    Mon–Fri 6 AM–5 PM · Sat–Sun closed
    Address
    4702 E 2nd St Ste 1, Benicia, CA 94510
  16. Based in El Cerrito, 47 mi away

    52/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Sat 8 AM–6 PM · Sun closed
  17. Based in Sonoma, 25 mi away

    52/100IFR Score

    Ranked #17 because of its Google rating and service focus: 4.3★ from 3 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.3★ from 3 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    18423 3rd Ave, Sonoma, CA 95476
  18. Based in Richmond, 49 mi away

    51/100IFR Score

    Ranked #18 because of its Google rating and review volume: 4.9★ from 32 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 32 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–6 PM
    Address
    930 23rd St B, Richmond, CA 94804
  19. Based in Napa, 32 mi away

    51/100IFR Score

    Ranked #19 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.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1370 Trancas St, Napa, CA 94558
  20. Based in Vallejo, 42 mi away

    51/100IFR Score

    Ranked #20 because of its Google rating and review volume: 4.8★ from 26 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 26 Google reviews
    Hours
    Mon–Sun 9 AM–8 PM
    Address
    3355 Sonoma Blvd #30, Vallejo, CA 94590
  21. Based in Benicia, 50 mi away

    51/100IFR Score

    Ranked #21 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Telecommunications service provider”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 6 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    536 Stone Rd Ste I & J, Benicia, CA 94510
  22. Based in Fairfield, 47 mi away

    51/100IFR Score

    Ranked #22 because of its Google rating and review volume: 4.6★ from 30 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 30 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–6 PM
    Address
    340 Travis Blvd #5, Fairfield, CA 94533
  23. Based in San Rafael, 44 mi away

    48/100IFR Score

    Ranked #24 because of its Google rating and review volume: 4.8★ from 12 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 12 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    25 Bellam Blvd A, San Rafael, CA 94901
  24. Based in Vacaville, 47 mi away

    48/100IFR Score

    Ranked #25 because of its Google rating and review volume: 5.0★ from 12 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 12 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    751 E Monte Vista Ave Ste B, Vacaville, CA 95688

All 32 business phone system providers

#1 to #25 are shown in full above. Here are #26 to #32, in IFR Score order; each links to its profile.

business phone system providers in Windsor, ranks 26 to 32
RankBusinessIFR ScoreGoogle ratingDistance
26Total Wireless485.0★ (11)49 mi
27Digital Living Inc.485.0★ (13)26 mi
28Total Wireless474.1★ (9)48 mi
29Napa Valley Security Consulting455.0★ (4)29 mi
30W. Bradley Electric, LLC.454.0★ (8)34 mi
31ForceX Tech LLC445.0★ (8)49 mi
32A TS Tax and Financial Solution Inc425.0★ (5)45 mi

Also serving Windsor

20 more business phone system providers within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.

Unranked business phone system providers serving Windsor
BusinessGoogle ratingDistance
415 IT5.0★ (2)43 mi
Bennett Valley Telecom10 mi
Coda Technologies5.0★ (2)20 mi
Com Express9 mi
DAIS Technology Partners36 mi
Empire Communications5.0★ (1)In Windsor
IDT, Inc.1.0★ (1)44 mi
Inside Line Communications41 mi
Intelletrace5.0★ (2)33 mi
Isetta Data & Communications5.0★ (1)24 mi
Network Connex3 mi
Rebich TechnologiesIn Windsor
Smart Fiber Networks3.0★ (2)43 mi
Tel-Con Communications3.0★ (2)7 mi
Telecom Service Co5.0★ (1)46 mi
Telecommunications Designs5.0★ (1)10 mi
Top Hat Communications12 mi
TPx Communications5.0★ (2)37 mi
Windsor Telcom4.5★ (2)In Windsor
Wolfe Communication5.0★ (2)9 mi

How we ranked Windsor business phone system providers

We scored 32 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.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn Windsor data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a business phone system provider

  1. Ask whether the system is cloud-hosted or installed on site, and who maintains it.
  2. Check internet capacity and backup: a cloud phone system stops when your connection does.
  3. Ask how 911 locations are registered for each phone and for remote staff.
  4. Compare per-user prices on the same features (call recording, queues, integrations).
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. 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, CA is Total Wireless with an IFR Score of 67/100. It has 5.0★ from 99 Google reviews. It is open 7 days a week. Boost Mobile (#2) and Total Wireless (#3) follow. We ranked 32 business phone system providers on nine factors, last updated November 9, 2026.

How many business phone system providers are there in Windsor?

ITFirmsRanked ranks 32 business phone system providers serving Windsor, CA. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.

Which business phone system providers in Windsor work on weekends?

20 of 32 ranked business phone system providers post Saturday hours and 17 post Sunday hours. The highest-ranked open Saturdays are Total Wireless (#1), Boost Mobile (#2) and Total Wireless (#3). 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 32 rated business phone system providers in Windsor is 4.9★, with a median of 12 reviews. Bay Area Tech Hero has the most, 145 reviews, and ranks #11. 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

  1. November 2026: IFR Scores recalculated for 32 business phone system providers serving Windsor.