Company lists · Data refreshed September 2026
Top 25 Phone system providers based in the United States
RevenueBase identified 567 company matches for phone system providers associated with the United States as of September 2026 and tracks 4,612 professional contacts across them, including 1,140 with verified work emails. New York is the largest hub.
This list covers company matches for phone system providers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest phone system providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 151 contacts → | ||||
Exact match “In-Telecom offers a full spectrum of solutions such as VoIP phones, access control, unparalleled customer service, IT consulting, and quality workmanship from our experienced…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 127 contacts → | ||||
Exact match “Transcom Telecommunications (formerly called "Transcom Services") is a Veteran Owned Business founded in 1986 on 3 core ideas.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 121 contacts → | ||||
Exact match “Founded in 1987, Estech Systems (ESI), a Crexendo® company, delivers high-performance phone systems designed for growing businesses.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 112 contacts → | ||||
Exact match “KOL Telecom is the leading innovator of small business Voice over IP (VoIP) Phone services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 77 contacts → | ||||
Exact match “Full Service Telecommunications Provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 75 contacts → | ||||
Exact match “At ATSI, we believe technology should empower people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 68 contacts → | ||||
Exact match “Business Class Phone Systems & Service with support & functionality to exceed your communication needs.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 61 contacts → | ||||
Exact match “Founded in 1973, Pittsburgh-based Dagostino Electronic Services, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 53 contacts → | ||||
Exact match “Established in 1995 as a premier Internet Service Provider in New Jersey, Monmouth Telecom has evolved into a comprehensive provider offering cutting-edge and cost-effective…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 52 contacts → | ||||
Exact match “Full Service Network is a privately held Telecommunications Services Carrier based in Pittsburgh, Pennsylvania.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 50 contacts → | ||||
Exact match “Innovative Communication Systems is a full service, family owned, business IT services provider in Austin, Houston, and San Antonio that has been leading the way since 1981.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 48 contacts → | ||||
Exact match “Telecommunication Solutions (business telephone systems, data & internet services, long distance & local services, voice and data cabling)” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 42 contacts → | ||||
Exact match “POPP provides VoIP Phone Systems and VoIP Business Phone Lines for small and medium-sized businesses in the Minneapolis / St.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 41 contacts → | ||||
Exact match “TelQuest International is dedicated to bringing the most competitive prices and the best customer service to all of our clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 35 contacts → | ||||
Exact match “Full sales and service of voice over IP systems.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 30 contacts → | ||||
Exact match “Phone Service Provider Internet Service Provider Collocation Services Managed IT Service - Help Desk Cybersecurity Provider Data Storage Design Implementation Virtualization…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 30 contacts → | ||||
Exact match “Axxess Networks founders have been in the Telecom and IT field for over 40 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 30 contacts → | ||||
Exact match “Metrotel Networks specializes in business phone system,business communications solutions, mobile worker communications, managed IT services, VOIP, cloud voice, business…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 29 contacts → | ||||
Exact match “We are a communications company that exists to serve and equip our partners to communicate effectively.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 28 contacts → | ||||
Exact match “TOTLCOM has been a dynamic telecommunications company for over 35 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 28 contacts → | ||||
Exact match “Our Mission “We are passionate about providing quality communication services that empower businesses and are paired with integrity and transparency at all stages.” The Vested…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 27 contacts → | ||||
Exact match “Telecommunications Company located in the Lehigh Valley, PA, founded in 1909.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 27 contacts → | ||||
Exact match “Aspen Communication's roots go back 25 years to Lucent Technologies AT & T and Avaya.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 22 contacts → | ||||
Exact match “Connecticut Communications is a voice & data company located in Durham, CT.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 22 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “phone system providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 567 phone system providers based in the United States
See the full list, filter by size, metro and specialty, and access 1,140 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Phone system providers based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 567 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “phone system providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,140 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “phone system providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many phone system providers are there based in the United States?
RevenueBase identified 567 company matches for phone system providers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
In-Telecom tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most phone system providers?
New York leads with 12 company records, followed by Austin (9) and Houston (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,140 professional contacts with verified work emails tracked across these 567 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 567 phone system providers based in the United States. Start with a free account, no credit card.
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Phone system providers by geography
- Phone system providers based in Australia
- Phone system providers based in Brazil
- Phone system providers based in Canada
- Phone system providers based in France
- Phone system providers based in Germany
- Phone system providers based in Italy
- Phone system providers based in the Netherlands
- Phone system providers based in Spain
- Phone system providers based in the United Kingdom
Browse the directory
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 phone system providers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 567 matching company records for phone system providers based in the United States, with 4,612 tracked contacts and 1,140 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 phone system providers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  In-Telecomin-telecom.comHQ: Slidell, LA, United StatesReported employees: 51-200 | Slidell, LA, United States | 51-200 | Exact match | 151 contacts → |
“In-Telecom offers a full spectrum of solutions such as VoIP phones, access control, unparalleled customer service, IT consulting, and quality workmanship from our experienced…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Transcom Telecommunicationstranscomla.comHQ: Signal Hill, CA, United StatesReported employees: 11-50 | Signal Hill, CA, United States | 11-50 | Exact match | 127 contacts → |
“Transcom Telecommunications (formerly called "Transcom Services") is a Veteran Owned Business founded in 1986 on 3 core ideas.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Estech Systems, Inc. ESIesi-estech.comHQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 121 contacts → |
“Founded in 1987, Estech Systems (ESI), a Crexendo® company, delivers high-performance phone systems designed for growing businesses.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | KOL Telecom Services LLCkoltelecom.com HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 112 contacts → |
“KOL Telecom is the leading innovator of small business Voice over IP (VoIP) Phone services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | PC Telcompctelcom.coop HQ: Holyoke, CO, United StatesReported employees: 11-50 | Holyoke, CO, United States | 11-50 | Exact match | 77 contacts → |
“Full Service Telecommunications Provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Atsi Business Communications Systemsatsihou.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 75 contacts → |
“At ATSI, we believe technology should empower people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Unified Global Solutions LLCunifiedglobalsolutions.netHQ: Dallas, TX, United StatesReported employees: 11-50 | Dallas, TX, United States | 11-50 | Exact match | 68 contacts → |
“Business Class Phone Systems & Service with support & functionality to exceed your communication needs.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Dagostino Electronic Services, INCdescomm.com HQ: Pittsburgh, PA, United StatesReported employees: 51-200 | Pittsburgh, PA, United States | 51-200 | Exact match | 61 contacts → |
“Founded in 1973, Pittsburgh-based Dagostino Electronic Services, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Monmouth Telecommonmouth.comHQ: Eatontown, NJ, United StatesReported employees: 51-200 | Eatontown, NJ, United States | 51-200 | Exact match | 53 contacts → |
“Established in 1995 as a premier Internet Service Provider in New Jersey, Monmouth Telecom has evolved into a comprehensive provider offering cutting-edge and cost-effective…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Full Service Networkfullservicenetwork.com HQ: Pittsburgh, PA, United StatesReported employees: 51-200 | Pittsburgh, PA, United States | 51-200 | Exact match | 52 contacts → |
“Full Service Network is a privately held Telecommunications Services Carrier based in Pittsburgh, Pennsylvania.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ics- It, Voice & Videoics-com.net HQ: San Antonio, TX, United StatesReported employees: 51-200 | San Antonio, TX, United States | 51-200 | Exact match | 50 contacts → |
“Innovative Communication Systems is a full service, family owned, business IT services provider in Austin, Houston, and San Antonio that has been leading the way since 1981.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Intouch Communicationsintouchomaha.com HQ: Omaha, NE, United StatesReported employees: 11-50 | Omaha, NE, United States | 11-50 | Exact match | 48 contacts → |
“Telecommunication Solutions (business telephone systems, data & internet services, long distance & local services, voice and data cabling)” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Popp Communicationspopp.com HQ: Golden Valley, MN, United StatesReported employees: 11-50 | Golden Valley, MN, United States | 11-50 | Exact match | 42 contacts → |
“POPP provides VoIP Phone Systems and VoIP Business Phone Lines for small and medium-sized businesses in the Minneapolis / St.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Telquest Internationaltelquestintl.comHQ: Fairfield, NJ, United StatesReported employees: 51-200 | Fairfield, NJ, United States | 51-200 | Exact match | 41 contacts → |
“TelQuest International is dedicated to bringing the most competitive prices and the best customer service to all of our clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Xfer Communicationsxfer.com HQ: Livonia, MI, United StatesReported employees: 11-50 | Livonia, MI, United States | 11-50 | Exact match | 35 contacts → |
“Full sales and service of voice over IP systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Digital Agent, LLCdigitalagent.netHQ: Atlanta, GA, United StatesReported employees: 11-50 | Atlanta, GA, United States | 11-50 | Exact match | 30 contacts → |
“Phone Service Provider Internet Service Provider Collocation Services Managed IT Service - Help Desk Cybersecurity Provider Data Storage Design Implementation Virtualization…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Axxess Networksaxxessnetworks.com HQ: Blue Bell, PA, United StatesReported employees: 11-50 | Blue Bell, PA, United States | 11-50 | Exact match | 30 contacts → |
“Axxess Networks founders have been in the Telecom and IT field for over 40 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Metrotel Networksmetrotelnetworks.com HQ: Garden City, NY, United StatesReported employees: 11-50 | Garden City, NY, United States | 11-50 | Exact match | 30 contacts → |
“Metrotel Networks specializes in business phone system,business communications solutions, mobile worker communications, managed IT services, VOIP, cloud voice, business…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ambit Solutions, LLCambit-llc.comHQ: Birmingham, AL, United StatesReported employees: 11-50 | Birmingham, AL, United States | 11-50 | Exact match | 29 contacts → |
“We are a communications company that exists to serve and equip our partners to communicate effectively.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Totlcom INCtotlcom.com HQ: Watsonville, CA, United StatesReported employees: 11-50 | Watsonville, CA, United States | 11-50 | Exact match | 28 contacts → |
“TOTLCOM has been a dynamic telecommunications company for over 35 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Vested Networksvestednetworks.com HQ: Lewisville, TX, United StatesReported employees: 11-50 | Lewisville, TX, United States | 11-50 | Exact match | 28 contacts → |
“Our Mission “We are passionate about providing quality communication services that empower businesses and are paired with integrity and transparency at all stages.” The Vested…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Ironton Internet & Telephoneironton.com HQ: Coplay, PA, United StatesReported employees: 51-200 | Coplay, PA, United States | 51-200 | Exact match | 27 contacts → |
“Telecommunications Company located in the Lehigh Valley, PA, founded in 1909.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Aspen Communicationsaspenbts.com HQ: Las Vegas, NV, United StatesReported employees: 1-10 | Las Vegas, NV, United States | 1-10 | Exact match | 27 contacts → |
“Aspen Communication's roots go back 25 years to Lucent Technologies AT & T and Avaya.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Connecticut Communicationsctcom.com HQ: Durham, CT, United StatesReported employees: 11-50 | Durham, CT, United States | 11-50 | Exact match | 22 contacts → |
“Connecticut Communications is a voice & data company located in Durham, CT.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Walkercom, INCwalkercom.com HQ: Pearland, TX, United StatesReported employees: 11-50 | Pearland, TX, United States | 11-50 | Exact match | 22 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 567 company matches
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Phone system providers: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
566 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 567 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for phone system providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many phone system providers did RevenueBase find based in the United States?
The saved snapshot records 567 matching company records, 4,612 tracked contacts and 1,140 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Phone system providers by geography
- Phone system providers based in Australia
- Phone system providers based in Brazil
- Phone system providers based in Canada
- Phone system providers based in France
- Phone system providers based in Germany
- Phone system providers based in Italy
- Phone system providers based in the Netherlands
- Phone system providers based in Spain
- Phone system providers based in the United Kingdom
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 phone system providers based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/phone-system-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 phone system providers based in the United States
RevenueBase records 567 matching company records for phone system providers based in the United States, with 4,612 tracked contacts and 1,140 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 phone system providers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | In-Telecomin-telecom.com HQ: Slidell, LA, United StatesReported employees: 51-200 | Slidell, LA, United States | 51-200 | Exact match | 151 contacts → |
“In-Telecom offers a full spectrum of solutions such as VoIP phones, access control, unparalleled customer service, IT consulting, and quality workmanship from our experienced…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Transcom Telecommunicationstranscomla.com HQ: Signal Hill, CA, United StatesReported employees: 11-50 | Signal Hill, CA, United States | 11-50 | Exact match | 127 contacts → |
“Transcom Telecommunications (formerly called "Transcom Services") is a Veteran Owned Business founded in 1986 on 3 core ideas.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Estech Systems, Inc. ESIesi-estech.com HQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 121 contacts → |
“Founded in 1987, Estech Systems (ESI), a Crexendo® company, delivers high-performance phone systems designed for growing businesses.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | KOL Telecom Services LLCkoltelecom.com HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 112 contacts → |
“KOL Telecom is the leading innovator of small business Voice over IP (VoIP) Phone services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | PC Telcompctelcom.coop HQ: Holyoke, CO, United StatesReported employees: 11-50 | Holyoke, CO, United States | 11-50 | Exact match | 77 contacts → |
“Full Service Telecommunications Provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Atsi Business Communications Systemsatsihou.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 75 contacts → |
“At ATSI, we believe technology should empower people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Unified Global Solutions LLCunifiedglobalsolutions.net HQ: Dallas, TX, United StatesReported employees: 11-50 | Dallas, TX, United States | 11-50 | Exact match | 68 contacts → |
“Business Class Phone Systems & Service with support & functionality to exceed your communication needs.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Dagostino Electronic Services, INCdescomm.com HQ: Pittsburgh, PA, United StatesReported employees: 51-200 | Pittsburgh, PA, United States | 51-200 | Exact match | 61 contacts → |
“Founded in 1973, Pittsburgh-based Dagostino Electronic Services, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Monmouth Telecommonmouth.com HQ: Eatontown, NJ, United StatesReported employees: 51-200 | Eatontown, NJ, United States | 51-200 | Exact match | 53 contacts → |
“Established in 1995 as a premier Internet Service Provider in New Jersey, Monmouth Telecom has evolved into a comprehensive provider offering cutting-edge and cost-effective…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Full Service Networkfullservicenetwork.com HQ: Pittsburgh, PA, United StatesReported employees: 51-200 | Pittsburgh, PA, United States | 51-200 | Exact match | 52 contacts → |
“Full Service Network is a privately held Telecommunications Services Carrier based in Pittsburgh, Pennsylvania.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ics- It, Voice & Videoics-com.net HQ: San Antonio, TX, United StatesReported employees: 51-200 | San Antonio, TX, United States | 51-200 | Exact match | 50 contacts → |
“Innovative Communication Systems is a full service, family owned, business IT services provider in Austin, Houston, and San Antonio that has been leading the way since 1981.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Intouch Communicationsintouchomaha.com HQ: Omaha, NE, United StatesReported employees: 11-50 | Omaha, NE, United States | 11-50 | Exact match | 48 contacts → |
“Telecommunication Solutions (business telephone systems, data & internet services, long distance & local services, voice and data cabling)” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Popp Communicationspopp.com HQ: Golden Valley, MN, United StatesReported employees: 11-50 | Golden Valley, MN, United States | 11-50 | Exact match | 42 contacts → |
“POPP provides VoIP Phone Systems and VoIP Business Phone Lines for small and medium-sized businesses in the Minneapolis / St.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Telquest Internationaltelquestintl.com HQ: Fairfield, NJ, United StatesReported employees: 51-200 | Fairfield, NJ, United States | 51-200 | Exact match | 41 contacts → |
“TelQuest International is dedicated to bringing the most competitive prices and the best customer service to all of our clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Xfer Communicationsxfer.com HQ: Livonia, MI, United StatesReported employees: 11-50 | Livonia, MI, United States | 11-50 | Exact match | 35 contacts → |
“Full sales and service of voice over IP systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Digital Agent, LLCdigitalagent.net HQ: Atlanta, GA, United StatesReported employees: 11-50 | Atlanta, GA, United States | 11-50 | Exact match | 30 contacts → |
“Phone Service Provider Internet Service Provider Collocation Services Managed IT Service - Help Desk Cybersecurity Provider Data Storage Design Implementation Virtualization…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Axxess Networksaxxessnetworks.com HQ: Blue Bell, PA, United StatesReported employees: 11-50 | Blue Bell, PA, United States | 11-50 | Exact match | 30 contacts → |
“Axxess Networks founders have been in the Telecom and IT field for over 40 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Metrotel Networksmetrotelnetworks.com HQ: Garden City, NY, United StatesReported employees: 11-50 | Garden City, NY, United States | 11-50 | Exact match | 30 contacts → |
“Metrotel Networks specializes in business phone system,business communications solutions, mobile worker communications, managed IT services, VOIP, cloud voice, business…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ambit Solutions, LLCambit-llc.com HQ: Birmingham, AL, United StatesReported employees: 11-50 | Birmingham, AL, United States | 11-50 | Exact match | 29 contacts → |
“We are a communications company that exists to serve and equip our partners to communicate effectively.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Totlcom INCtotlcom.com HQ: Watsonville, CA, United StatesReported employees: 11-50 | Watsonville, CA, United States | 11-50 | Exact match | 28 contacts → |
“TOTLCOM has been a dynamic telecommunications company for over 35 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Vested Networksvestednetworks.com HQ: Lewisville, TX, United StatesReported employees: 11-50 | Lewisville, TX, United States | 11-50 | Exact match | 28 contacts → |
“Our Mission “We are passionate about providing quality communication services that empower businesses and are paired with integrity and transparency at all stages.” The Vested…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Ironton Internet & Telephoneironton.com HQ: Coplay, PA, United StatesReported employees: 51-200 | Coplay, PA, United States | 51-200 | Exact match | 27 contacts → |
“Telecommunications Company located in the Lehigh Valley, PA, founded in 1909.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Aspen Communicationsaspenbts.com HQ: Las Vegas, NV, United StatesReported employees: 1-10 | Las Vegas, NV, United States | 1-10 | Exact match | 27 contacts → |
“Aspen Communication's roots go back 25 years to Lucent Technologies AT & T and Avaya.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Connecticut Communicationsctcom.com HQ: Durham, CT, United StatesReported employees: 11-50 | Durham, CT, United States | 11-50 | Exact match | 22 contacts → |
“Connecticut Communications is a voice & data company located in Durham, CT.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Walkercom, INCwalkercom.com HQ: Pearland, TX, United StatesReported employees: 11-50 | Pearland, TX, United States | 11-50 | Exact match | 22 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 567 company matches
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Phone system providers: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
566 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 567 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for phone system providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many phone system providers did RevenueBase find based in the United States?
The saved snapshot records 567 matching company records, 4,612 tracked contacts and 1,140 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Phone system providers by geography
- Phone system providers based in Australia
- Phone system providers based in Brazil
- Phone system providers based in Canada
- Phone system providers based in France
- Phone system providers based in Germany
- Phone system providers based in Italy
- Phone system providers based in the Netherlands
- Phone system providers based in Spain
- Phone system providers based in the United Kingdom
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 phone system providers based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/phone-system-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗