Company lists · Data refreshed September 2026
Top 25 Phone system providers worldwide
RevenueBase identified 1,868 company matches for phone system providers worldwide as of September 2026 and tracks 12,779 professional contacts across them, including 2,953 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers company matches for phone system providers worldwide, 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. Country and city lists for phone system providers follow the table.
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 worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 319 contacts → | ||||
Exact match “Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 298 contacts → | ||||
Exact match “Syntel is the Telecom Division of Arvind Limited, a flagship company of the INR 50 billion Lalbhai Group.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 273 contacts → | ||||
Exact match “A Handphone Telecomunicações é uma indústria, fabricante de equipamentos para Telecomunicações, tais como sistemas PABX de pequeno, médio e grande porte, sistemas Call Center's…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 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 | |||||
| 5 | 131 contacts → | ||||
Exact match “Unifiedvoice is a globally recognized VoIP service and solutions provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 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 | |||||
| 7 | 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 | |||||
| 8 | 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 | |||||
| 9 | 96 contacts → | ||||
Exact match “innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 94 contacts → | ||||
Exact match “Inextrix Technologies Pvt.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 93 contacts → | ||||
Exact match “mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 88 contacts → | ||||
Exact match “Coyser S.A.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 77 contacts → | ||||
Exact match “Full Service Telecommunications Provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 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 | |||||
| 15 | 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 | |||||
| 16 | 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 | |||||
| 17 | 61 contacts → | ||||
Exact match “Na Agil Telecom, trabalhamos para simplificar a comunicação das empresas.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 55 contacts → | ||||
Exact match “SODITEL NUEVO PARTNER TECNOLÓGICO DE AASTRA EN ESPAÑA El gran nivel profesional y su avalada y reconocida garantía en la prestación de servicios profesionales, han convertido a…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 54 contacts → | ||||
Exact match “Founded in 2005, Comtel is a South African Internet Service Provider focused on one thing: connectivity.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 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 | |||||
| 21 | 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 | |||||
| 22 | 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 | |||||
| 23 | 50 contacts → | ||||
Exact match “General Teleinformatica Srl è un’azienda che opera sul territorio nazionale da 20 anni con un parco installato di oltre 2400 clienti.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 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 | |||||
| 25 | 43 contacts → | ||||
Exact match “Nirwana est présente sur 2 marchés différents et technologiquement complémentaires - PME Standard Téléphonique complet et hautement paramétrables Informatique globale (serveur…” 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 1,868 phone system providers worldwide
See the full list, filter by size, metro and specialty, and access 2,953 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Phone system providers worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for phone system providers are linked below.
- What qualifies
- Company records worldwide 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. 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 2,953 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.
Phone system providers by location
10 lists · largest firstEvery Phone system providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Phone system providers based in the United States567
- Phone system providers based in the United Kingdom159
- Phone system providers based in Brazil124
- Phone system providers based in Canada84
- Phone system providers based in France79
- Phone system providers based in Italy69
- Phone system providers based in Germany60
- Phone system providers based in Spain52
- Phone system providers based in Australia49
- Phone system providers based in the Netherlands29
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 worldwide?
RevenueBase identified 1,868 company matches for phone system providers worldwide 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?
KEYYO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most phone system providers?
The United States leads with 567 companies, followed by the United Kingdom (159) and Brazil (124). Every phone system providers list by country and city is linked on this page.
Which city has the most phone system providers?
Sao Paulo leads with 29 company records, followed by London (20) and New York (12).
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 2,953 professional contacts with verified work emails tracked across these 1,868 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 1,868 phone system providers worldwide. Start with a free account, no credit card.
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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 worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,868 matching company records for phone system providers worldwide, with 12,779 tracked contacts and 2,953 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 worldwide
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 |  KEYYOkeyyo.comHQ: Clichy, FranceReported employees: 201-500 | Clichy, France | 201-500 | Exact match | 319 contacts → |
“Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Syntel By Arvindarvindsyntel.comHQ: Pune, IndiaReported employees: 201-500 | Pune, India | 201-500 | Exact match | 298 contacts → |
“Syntel is the Telecom Division of Arvind Limited, a flagship company of the INR 50 billion Lalbhai Group.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Handphone Telecomunicaçõeshandphone.com.br HQ: Osasco, BrazilReported employees: 201-500 | Osasco, Brazil | 201-500 | Exact match | 273 contacts → |
“A Handphone Telecomunicações é uma indústria, fabricante de equipamentos para Telecomunicações, tais como sistemas PABX de pequeno, médio e grande porte, sistemas Call Center's…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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. | |||||
| 5 |  Unified Voice Communication PVT LTDunifiedvoice.inHQ: Chennai, IndiaReported employees: 51-200 | Chennai, India | 51-200 | Exact match | 131 contacts → |
“Unifiedvoice is a globally recognized VoIP service and solutions provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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. | |||||
| 7 |  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. | |||||
| 8 | 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. | |||||
| 9 |  Innovaphoneinnovaphone.comHQ: Sindelfingen, GermanyReported employees: 51-200 | Sindelfingen, Germany | 51-200 | Exact match | 96 contacts → |
“innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Inextrix Technologies Pvt. LTDinextrix.comHQ: Ahmedabad, IndiaReported employees: 51-200 | Ahmedabad, India | 51-200 | Exact match | 94 contacts → |
“Inextrix Technologies Pvt.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  MDTELmdtel.esHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 93 contacts → |
“mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Coyser SAcoyser.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 88 contacts → |
“Coyser S.A.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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. | |||||
| 14 |  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. | |||||
| 15 |  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. | |||||
| 16 | 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. | |||||
| 17 |  Agil Telecomagiltelecom.com.brHQ: São Paulo, BrazilReported employees: 11-50 | São Paulo, Brazil | 11-50 | Exact match | 61 contacts → |
“Na Agil Telecom, trabalhamos para simplificar a comunicação das empresas.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Soditelsoditel.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 55 contacts → |
“SODITEL NUEVO PARTNER TECNOLÓGICO DE AASTRA EN ESPAÑA El gran nivel profesional y su avalada y reconocida garantía en la prestación de servicios profesionales, han convertido a…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Comtelcomtel.co.zaHQ: Cape Town, South AfricaReported employees: 51-200 | Cape Town, South Africa | 51-200 | Exact match | 54 contacts → |
“Founded in 2005, Comtel is a South African Internet Service Provider focused on one thing: connectivity.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  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. | |||||
| 21 | 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. | |||||
| 22 | 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. | |||||
| 23 |  GTIgti.itHQ: Modena, ItalyReported employees: 11-50 | Modena, Italy | 11-50 | Exact match | 50 contacts → |
“General Teleinformatica Srl è un’azienda che opera sul territorio nazionale da 20 anni con un parco installato di oltre 2400 clienti.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 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. | |||||
| 25 | Nirwananirwana.fr HQ: Villebon-sur-yvette, FranceReported employees: 11-50 | Villebon-sur-yvette, France | 11-50 | Exact match | 43 contacts → |
“Nirwana est présente sur 2 marchés différents et technologiquement complémentaires - PME Standard Téléphonique complet et hautement paramétrables Informatique globale (serveur…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,868 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
1,860 records in the displayed employee bands.
8 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,868 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 ↗
Phone system providers by location
10 lists · largest firstEvery Phone system providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Phone system providers based in the United States567
- Phone system providers based in the United Kingdom159
- Phone system providers based in Brazil124
- Phone system providers based in Canada84
- Phone system providers based in France79
- Phone system providers based in Italy69
- Phone system providers based in Germany60
- Phone system providers based in Spain52
- Phone system providers based in Australia49
- Phone system providers based in the Netherlands29
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 worldwide?
The saved snapshot records 1,868 matching company records, 12,779 tracked contacts and 2,953 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
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Cite this list
RevenueBase Data Team. Top 25 phone system providers worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/phone-system-providers.
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 worldwide
RevenueBase records 1,868 matching company records for phone system providers worldwide, with 12,779 tracked contacts and 2,953 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 worldwide
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 | KEYYOkeyyo.com HQ: Clichy, FranceReported employees: 201-500 | Clichy, France | 201-500 | Exact match | 319 contacts → |
“Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Syntel By Arvindarvindsyntel.com HQ: Pune, IndiaReported employees: 201-500 | Pune, India | 201-500 | Exact match | 298 contacts → |
“Syntel is the Telecom Division of Arvind Limited, a flagship company of the INR 50 billion Lalbhai Group.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Handphone Telecomunicaçõeshandphone.com.br HQ: Osasco, BrazilReported employees: 201-500 | Osasco, Brazil | 201-500 | Exact match | 273 contacts → |
“A Handphone Telecomunicações é uma indústria, fabricante de equipamentos para Telecomunicações, tais como sistemas PABX de pequeno, médio e grande porte, sistemas Call Center's…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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. | |||||
| 5 | Unified Voice Communication PVT LTDunifiedvoice.in HQ: Chennai, IndiaReported employees: 51-200 | Chennai, India | 51-200 | Exact match | 131 contacts → |
“Unifiedvoice is a globally recognized VoIP service and solutions provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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. | |||||
| 7 | 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. | |||||
| 8 | 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. | |||||
| 9 | Innovaphoneinnovaphone.com HQ: Sindelfingen, GermanyReported employees: 51-200 | Sindelfingen, Germany | 51-200 | Exact match | 96 contacts → |
“innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Inextrix Technologies Pvt. LTDinextrix.com HQ: Ahmedabad, IndiaReported employees: 51-200 | Ahmedabad, India | 51-200 | Exact match | 94 contacts → |
“Inextrix Technologies Pvt.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | MDTELmdtel.es HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 93 contacts → |
“mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Coyser SAcoyser.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 88 contacts → |
“Coyser S.A.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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. | |||||
| 14 | 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. | |||||
| 15 | 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. | |||||
| 16 | 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. | |||||
| 17 | Agil Telecomagiltelecom.com.br HQ: São Paulo, BrazilReported employees: 11-50 | São Paulo, Brazil | 11-50 | Exact match | 61 contacts → |
“Na Agil Telecom, trabalhamos para simplificar a comunicação das empresas.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Soditelsoditel.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 55 contacts → |
“SODITEL NUEVO PARTNER TECNOLÓGICO DE AASTRA EN ESPAÑA El gran nivel profesional y su avalada y reconocida garantía en la prestación de servicios profesionales, han convertido a…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Comtelcomtel.co.za HQ: Cape Town, South AfricaReported employees: 51-200 | Cape Town, South Africa | 51-200 | Exact match | 54 contacts → |
“Founded in 2005, Comtel is a South African Internet Service Provider focused on one thing: connectivity.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | 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. | |||||
| 21 | 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. | |||||
| 22 | 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. | |||||
| 23 | GTIgti.it HQ: Modena, ItalyReported employees: 11-50 | Modena, Italy | 11-50 | Exact match | 50 contacts → |
“General Teleinformatica Srl è un’azienda che opera sul territorio nazionale da 20 anni con un parco installato di oltre 2400 clienti.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 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. | |||||
| 25 | Nirwananirwana.fr HQ: Villebon-sur-yvette, FranceReported employees: 11-50 | Villebon-sur-yvette, France | 11-50 | Exact match | 43 contacts → |
“Nirwana est présente sur 2 marchés différents et technologiquement complémentaires - PME Standard Téléphonique complet et hautement paramétrables Informatique globale (serveur…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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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
1,860 records in the displayed employee bands.
8 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,868 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 ↗
Phone system providers by location
10 lists · largest firstEvery Phone system providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Phone system providers based in the United States567
- Phone system providers based in the United Kingdom159
- Phone system providers based in Brazil124
- Phone system providers based in Canada84
- Phone system providers based in France79
- Phone system providers based in Italy69
- Phone system providers based in Germany60
- Phone system providers based in Spain52
- Phone system providers based in Australia49
- Phone system providers based in the Netherlands29
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 worldwide?
The saved snapshot records 1,868 matching company records, 12,779 tracked contacts and 2,953 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
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Cite this list
RevenueBase Data Team. Top 25 phone system providers worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/phone-system-providers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗