Company lists · Data refreshed November 2026
Top 25 Phone system implementation companies worldwide
RevenueBase identified 3,296 company matches for phone system implementation companies worldwide as of November 2026 and tracks 27,615 professional contacts across them, including 6,787 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for phone system implementation companies 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 November 6, 2026. Country and city lists for phone system implementation companies 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 implementation companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 688 contacts → | ||||
Exact match “We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 418 contacts → | ||||
Exact match “IT & UC.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 392 contacts → | ||||
Exact match “With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 373 contacts → | ||||
Exact match “One of the leading systems integrators in the European market today.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 373 contacts → | ||||
Exact match “ACS has over three decades of experience and unparalleled expertise in the assessment and implementation of voice and data platforms and can provide solutions for telephone…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 327 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 286 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 261 contacts → | ||||
Exact match “As the leading global integrator of business communication solutions and services since 1993, NACR has been a trusted advisor to more than 40% of the Fortune 100 companies…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 170 contacts → | ||||
Exact match “Zultys is a premier provider of omnichannel, Unified Communications, hosted business phone services and premise-based communications systems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 159 contacts → | ||||
Exact match “At Newtech, we guide our customers throughout their digital transformation and technological adoption journey.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 144 contacts → | ||||
Exact match “Unifiedvoice is a globally recognized VoIP service and solutions provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 143 contacts → | ||||
Exact match “Unimax believes that administering PBX and voice messaging systems can be far less complex and costly, while delivering better service levels.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 143 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 133 contacts → | ||||
Exact match “Ámbar Telecomunicaciones es una empresa de ingeniería especializada en la integración global de sistemas de comunicación, que centra su actividad en el diseño, instalación y…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 125 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 125 contacts → | ||||
Exact match “WHY TELECO At TELECO, we believe that business owners deserve access to the same advantage-creating technologies mega corporations depend on for their success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 104 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 104 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 90 contacts → | ||||
Exact match “The Baker Mission At Baker Installations, we strive to build consumer confidence every day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 90 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 86 contacts → | ||||
Exact match “We make workplace technology work for you.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 84 contacts → | ||||
Exact match “UniTalk - єдине рішення для керування спілкуванням з клієнтами.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 83 contacts → | ||||
Exact match “CSDNET, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 81 contacts → | ||||
Exact match “For over 30 years, CRI has installed, maintained and serviced business communications systems throughout the Southeastern U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 81 contacts → | ||||
Exact match “Contact an expert now: 0800 9 77 88 99 Specialists in providing businesses with telecoms, data and energy since 1989.” Recorded in the RevenueBase company graph · Nov 6, 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 implementation companies”. 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 3,296 phone system implementation companies worldwide
See the full list, filter by size, metro and specialty, and access 6,787 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Phone system implementation companies worldwide at a glance
As of Nov 6, 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 implementation companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “phone system implementation companies” 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 6,787 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 November 6, 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 implementation companies by location
13 lists · largest firstEvery Phone system implementation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Phone system implementation companies based in the United States1,260
- Phone system implementation companies based in the United Kingdom265
- Phone system implementation companies based in Brazil150
- Phone system implementation companies based in Canada134
- Phone system implementation companies based in Germany105
- Phone system implementation companies based in France100
- Phone system implementation companies based in Italy100
- Phone system implementation companies based in Australia88
- Phone system implementation companies based in Spain82
- Phone system implementation companies based in the Netherlands43
Cities
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 implementation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many phone system implementation companies are there worldwide?
RevenueBase identified 3,296 company matches for phone system implementation companies worldwide as of November 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?
VIS Networks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most phone system implementation companies?
The United States leads with 1,260 companies, followed by the United Kingdom (265) and Brazil (150). Every phone system implementation companies list by country and city is linked on this page.
Which city has the most phone system implementation companies?
London leads with 34 company records, followed by Sao Paulo (29) and Houston (27).
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 6,787 professional contacts with verified work emails tracked across these 3,296 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,296 phone system implementation companies 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 implementation companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,296 matching company records for phone system implementation companies worldwide, with 27,615 tracked contacts and 6,787 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: November 6, 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 implementation companies 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 |  VIS Networksvisnet.inHQ: Bangalore, IndiaReported employees: 201-500 | Bangalore, India | 201-500 | Exact match | 688 contacts → |
“We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  BSUbsu.nlHQ: Veghel, NetherlandsReported employees: 51-200 | Veghel, Netherlands | 51-200 | Exact match | 418 contacts → |
“IT & UC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Continuantcontinuant.comHQ: Tacoma, WA, United StatesReported employees: 201-500 | Tacoma, WA, United States | 201-500 | Exact match | 392 contacts → |
“With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Soitronsoitron.comHQ: Bratislava, SlovakiaReported employees: 501-1,000 | Bratislava, Slovakia | 501-1,000 | Exact match | 373 contacts → |
“One of the leading systems integrators in the European market today.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ACS2acs.comHQ: Lake Mary, FL, United StatesReported employees: Not recorded | Lake Mary, FL, United States | Not recorded | Exact match | 373 contacts → |
“ACS has over three decades of experience and unparalleled expertise in the assessment and implementation of voice and data platforms and can provide solutions for telephone…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  KEYYOkeyyo.comHQ: Clichy, FranceReported employees: 201-500 | Clichy, France | 201-500 | Exact match | 327 contacts → |
“Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Handphone Telecomunicaçõeshandphone.com.brHQ: Osasco, BrazilReported employees: 201-500 | Osasco, Brazil | 201-500 | Exact match | 286 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  NACRnacr.comHQ: Eagan, MN, United StatesReported employees: 501-1,000 | Eagan, MN, United States | 501-1,000 | Exact match | 261 contacts → |
“As the leading global integrator of business communication solutions and services since 1993, NACR has been a trusted advisor to more than 40% of the Fortune 100 companies…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Zultyszultys.comHQ: Sunnyvale, CA, United StatesReported employees: 51-200 | Sunnyvale, CA, United States | 51-200 | Exact match | 170 contacts → |
“Zultys is a premier provider of omnichannel, Unified Communications, hosted business phone services and premise-based communications systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Newtechnewtechgroup.comHQ: Miami, United StatesReported employees: 51-200 | Miami, United States | 51-200 | Exact match | 159 contacts → |
“At Newtech, we guide our customers throughout their digital transformation and technological adoption journey.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Unified Voice Communication PVT LTDunifiedvoice.inHQ: Chennai, IndiaReported employees: 51-200 | Chennai, India | 51-200 | Exact match | 144 contacts → |
“Unifiedvoice is a globally recognized VoIP service and solutions provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Unimaxunimax.comHQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 143 contacts → |
“Unimax believes that administering PBX and voice messaging systems can be far less complex and costly, while delivering better service levels.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Transcom Telecommunicationstranscomla.comHQ: Signal Hill, CA, United StatesReported employees: 11-50 | Signal Hill, CA, United States | 11-50 | Exact match | 143 contacts → |
“Transcom Telecommunications (formerly called "Transcom Services") is a Veteran Owned Business founded in 1986 on 3 core ideas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Ambar Telecomunicacionesambar.esHQ: Santander, SpainReported employees: 201-500 | Santander, Spain | 201-500 | Exact match | 133 contacts → |
“Ámbar Telecomunicaciones es una empresa de ingeniería especializada en la integración global de sistemas de comunicación, que centra su actividad en el diseño, instalación y…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Estech Systems, Inc. ESIesi-estech.comHQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 125 contacts → |
“Founded in 1987, Estech Systems (ESI), a Crexendo® company, delivers high-performance phone systems designed for growing businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Teleco, INCteleco.comHQ: Greenville, SC, United StatesReported employees: 51-200 | Greenville, SC, United States | 51-200 | Exact match | 125 contacts → |
“WHY TELECO At TELECO, we believe that business owners deserve access to the same advantage-creating technologies mega corporations depend on for their success.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Innovaphoneinnovaphone.comHQ: Sindelfingen, GermanyReported employees: 51-200 | Sindelfingen, Germany | 51-200 | Exact match | 104 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  MDTELmdtel.esHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 104 contacts → |
“mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Baker Installationsbaker-installations.comHQ: Mcmurray, PA, United StatesReported employees: 201-500 | Mcmurray, PA, United States | 201-500 | Exact match | 90 contacts → |
“The Baker Mission At Baker Installations, we strive to build consumer confidence every day.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | REL Commrcomm.com HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 90 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | HQ: Arvada, CO, United StatesReported employees: 11-50 | Arvada, CO, United States | 11-50 | Exact match | 86 contacts → |
“We make workplace technology work for you.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Unitalkunitalk.cloudHQ: Kyiv, UkraineReported employees: 11-50 | Kyiv, Ukraine | 11-50 | Exact match | 84 contacts → |
“UniTalk - єдине рішення для керування спілкуванням з клієнтами.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Csdnetcsdnet.netHQ: Bayport, NY, United StatesReported employees: 51-200 | Bayport, NY, United States | 51-200 | Exact match | 83 contacts → |
“CSDNET, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  CRIgocri.comHQ: Chattanooga, TN, United StatesReported employees: 11-50 | Chattanooga, TN, United States | 11-50 | Exact match | 81 contacts → |
“For over 30 years, CRI has installed, maintained and serviced business communications systems throughout the Southeastern U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  ICS Communicationsicscomms.co.ukHQ: Camberley, United KingdomReported employees: 11-50 | Camberley, United Kingdom | 11-50 | Exact match | 81 contacts → |
“Contact an expert now: 0800 9 77 88 99 Specialists in providing businesses with telecoms, data and energy since 1989.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,296 company matches
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Phone system implementation companies: dataset insights
November 6, 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
3,258 records in the displayed employee bands.
38 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 3,296 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: November 6, 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 implementation companies by location
13 lists · largest firstEvery Phone system implementation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Phone system implementation companies based in the United States1,260
- Phone system implementation companies based in the United Kingdom265
- Phone system implementation companies based in Brazil150
- Phone system implementation companies based in Canada134
- Phone system implementation companies based in Germany105
- Phone system implementation companies based in France100
- Phone system implementation companies based in Italy100
- Phone system implementation companies based in Australia88
- Phone system implementation companies based in Spain82
- Phone system implementation companies based in the Netherlands43
Cities
Questions about this company list
What does Exact match mean for phone system implementation companies?
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 implementation companies did RevenueBase find worldwide?
The saved snapshot records 3,296 matching company records, 27,615 tracked contacts and 6,787 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 phone system implementation companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/phone-system-implementation-companies.
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 implementation companies worldwide
RevenueBase records 3,296 matching company records for phone system implementation companies worldwide, with 27,615 tracked contacts and 6,787 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: November 6, 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 implementation companies 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 | VIS Networksvisnet.in HQ: Bangalore, IndiaReported employees: 201-500 | Bangalore, India | 201-500 | Exact match | 688 contacts → |
“We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | BSUbsu.nl HQ: Veghel, NetherlandsReported employees: 51-200 | Veghel, Netherlands | 51-200 | Exact match | 418 contacts → |
“IT & UC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Continuantcontinuant.com HQ: Tacoma, WA, United StatesReported employees: 201-500 | Tacoma, WA, United States | 201-500 | Exact match | 392 contacts → |
“With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Soitronsoitron.com HQ: Bratislava, SlovakiaReported employees: 501-1,000 | Bratislava, Slovakia | 501-1,000 | Exact match | 373 contacts → |
“One of the leading systems integrators in the European market today.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ACS2acs.com HQ: Lake Mary, FL, United StatesReported employees: Not recorded | Lake Mary, FL, United States | Not recorded | Exact match | 373 contacts → |
“ACS has over three decades of experience and unparalleled expertise in the assessment and implementation of voice and data platforms and can provide solutions for telephone…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | KEYYOkeyyo.com HQ: Clichy, FranceReported employees: 201-500 | Clichy, France | 201-500 | Exact match | 327 contacts → |
“Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Handphone Telecomunicaçõeshandphone.com.br HQ: Osasco, BrazilReported employees: 201-500 | Osasco, Brazil | 201-500 | Exact match | 286 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | NACRnacr.com HQ: Eagan, MN, United StatesReported employees: 501-1,000 | Eagan, MN, United States | 501-1,000 | Exact match | 261 contacts → |
“As the leading global integrator of business communication solutions and services since 1993, NACR has been a trusted advisor to more than 40% of the Fortune 100 companies…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Zultyszultys.com HQ: Sunnyvale, CA, United StatesReported employees: 51-200 | Sunnyvale, CA, United States | 51-200 | Exact match | 170 contacts → |
“Zultys is a premier provider of omnichannel, Unified Communications, hosted business phone services and premise-based communications systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Newtechnewtechgroup.com HQ: Miami, United StatesReported employees: 51-200 | Miami, United States | 51-200 | Exact match | 159 contacts → |
“At Newtech, we guide our customers throughout their digital transformation and technological adoption journey.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Unified Voice Communication PVT LTDunifiedvoice.in HQ: Chennai, IndiaReported employees: 51-200 | Chennai, India | 51-200 | Exact match | 144 contacts → |
“Unifiedvoice is a globally recognized VoIP service and solutions provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Unimaxunimax.com HQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 143 contacts → |
“Unimax believes that administering PBX and voice messaging systems can be far less complex and costly, while delivering better service levels.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Transcom Telecommunicationstranscomla.com HQ: Signal Hill, CA, United StatesReported employees: 11-50 | Signal Hill, CA, United States | 11-50 | Exact match | 143 contacts → |
“Transcom Telecommunications (formerly called "Transcom Services") is a Veteran Owned Business founded in 1986 on 3 core ideas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Ambar Telecomunicacionesambar.es HQ: Santander, SpainReported employees: 201-500 | Santander, Spain | 201-500 | Exact match | 133 contacts → |
“Ámbar Telecomunicaciones es una empresa de ingeniería especializada en la integración global de sistemas de comunicación, que centra su actividad en el diseño, instalación y…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Estech Systems, Inc. ESIesi-estech.com HQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 125 contacts → |
“Founded in 1987, Estech Systems (ESI), a Crexendo® company, delivers high-performance phone systems designed for growing businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Teleco, INCteleco.com HQ: Greenville, SC, United StatesReported employees: 51-200 | Greenville, SC, United States | 51-200 | Exact match | 125 contacts → |
“WHY TELECO At TELECO, we believe that business owners deserve access to the same advantage-creating technologies mega corporations depend on for their success.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Innovaphoneinnovaphone.com HQ: Sindelfingen, GermanyReported employees: 51-200 | Sindelfingen, Germany | 51-200 | Exact match | 104 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | MDTELmdtel.es HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 104 contacts → |
“mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Baker Installationsbaker-installations.com HQ: Mcmurray, PA, United StatesReported employees: 201-500 | Mcmurray, PA, United States | 201-500 | Exact match | 90 contacts → |
“The Baker Mission At Baker Installations, we strive to build consumer confidence every day.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | REL Commrcomm.com HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 90 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | HQ: Arvada, CO, United StatesReported employees: 11-50 | Arvada, CO, United States | 11-50 | Exact match | 86 contacts → |
“We make workplace technology work for you.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Unitalkunitalk.cloud HQ: Kyiv, UkraineReported employees: 11-50 | Kyiv, Ukraine | 11-50 | Exact match | 84 contacts → |
“UniTalk - єдине рішення для керування спілкуванням з клієнтами.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Csdnetcsdnet.net HQ: Bayport, NY, United StatesReported employees: 51-200 | Bayport, NY, United States | 51-200 | Exact match | 83 contacts → |
“CSDNET, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | CRIgocri.com HQ: Chattanooga, TN, United StatesReported employees: 11-50 | Chattanooga, TN, United States | 11-50 | Exact match | 81 contacts → |
“For over 30 years, CRI has installed, maintained and serviced business communications systems throughout the Southeastern U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ICS Communicationsicscomms.co.uk HQ: Camberley, United KingdomReported employees: 11-50 | Camberley, United Kingdom | 11-50 | Exact match | 81 contacts → |
“Contact an expert now: 0800 9 77 88 99 Specialists in providing businesses with telecoms, data and energy since 1989.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Phone system implementation companies: dataset insights
November 6, 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
3,258 records in the displayed employee bands.
38 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 3,296 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: November 6, 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 implementation companies by location
13 lists · largest firstEvery Phone system implementation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Phone system implementation companies based in the United States1,260
- Phone system implementation companies based in the United Kingdom265
- Phone system implementation companies based in Brazil150
- Phone system implementation companies based in Canada134
- Phone system implementation companies based in Germany105
- Phone system implementation companies based in France100
- Phone system implementation companies based in Italy100
- Phone system implementation companies based in Australia88
- Phone system implementation companies based in Spain82
- Phone system implementation companies based in the Netherlands43
Cities
Questions about this company list
What does Exact match mean for phone system implementation companies?
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 implementation companies did RevenueBase find worldwide?
The saved snapshot records 3,296 matching company records, 27,615 tracked contacts and 6,787 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: November 6, 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 implementation companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/phone-system-implementation-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗