Company lists · Data refreshed November 2026
Top 25 Telephony software vendors based in the United States
RevenueBase identified 239 company matches for telephony software vendors associated with the United States as of November 2026 and tracks 5,216 professional contacts across them, including 1,198 with verified work emails. Atlanta is the largest hub.
This list covers company matches for telephony software vendors associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest telephony software vendors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 315 contacts → | ||||
Exact match “About Aastra Technologies Limited Aastra Technologies Limited (TSX: “AAH”), is a leading company at the forefront of the enterprise communication market.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 258 contacts → | ||||
Exact match “Since 2002, CallTower has been at the forefront of transforming global communication, emerging as a leader in enterprise-class cloud communication, collaboration, and CX solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 253 contacts → | ||||
Exact match “BroadSoft, now part of Cisco, is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 218 contacts → | ||||
Exact match “For over thirty years, Fortune 500 companies in financial services, retail and hospitality, software, and wireless communications industries have relied on Vail Systems’…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 199 contacts → | ||||
Exact match “VoIP Office, founded in 2004, provides cloud-based communications and hosted PBX solutions that combine traditional PBX features with VoIP functionality.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 185 contacts → | ||||
Exact match “Vertical Communications is a leading provider of communications platforms and applications that enable critical business workflows for enterprises across a variety of industries…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 170 contacts → | ||||
Exact match “At AVOXI, we believe that voice conversations are essential for businesses to connect with customers across the globe.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 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 5, 2026 · View company records in RevenueBase | |||||
| 9 | 121 contacts → | ||||
Exact match “Amtelco has been a family-owned communication software company since 1976 and devoted to providing secure, stable, and critical communication solutions for healthcare, contact…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 103 contacts → | ||||
Exact match “Founded in 2006 in Sarasota, Florida, Star2Star Communications delivers the World's Leading Hybrid Cloud Communications Solution.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 91 contacts → | ||||
Exact match “Alliance Global is a cloud-based business phone system provider exclusively for organizations that require professional communication features.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 63 contacts → | ||||
Exact match “Digium®, Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 59 contacts → | ||||
Exact match “VOXO offers phone systems and call center software for businesses with a focus on simplicity and customer satisfaction.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 58 contacts → | ||||
Exact match “West IP Communications, a wholly owned subsidiary of West Corporation, is a leading provider of cloud-based communications for the enterprise - including MPLS-based application…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 46 contacts → | ||||
Exact match “Optivor is a global leader in enterprise communications solutions and IT Services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 43 contacts → | ||||
Exact match “In an industry of tech giants and convoluted jargon, it’s easy to get overwhelmed.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 41 contacts → | ||||
Exact match “Gold Systems helps improve your profitability and increase customer satisfaction by developing and implementing unified communications and self-service solutions powered by voice.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 37 contacts → | ||||
Exact match “American Telephone is an employee owned telecommunications company that has been proudly serving customers since 1982.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 36 contacts → | ||||
Exact match “United World Telecom is a global cloud telephony provider delivering enterprise-grade voice solutions in over 160 countries.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 35 contacts → | ||||
Exact match “Since 1993, Intelemedia has developed sophisticated telephony and database solutions that transform how organizations more effectively manage call handling and caller experiences…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 34 contacts → | ||||
Exact match “Unified Office is a leading communications technology company, constantly innovating to help its business customers and channel partners stay ahead in a rapidly changing world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 30 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 28 contacts → | ||||
Exact match “TeleComp (formerly Co-nexus) provides hosted or managed IP Telephone Systems, Unified Communications, Call Center Solutions including Call Recording and Quality Monitoring.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 24 contacts → | ||||
Exact match “Medtel Communications provides reliable and easy-to-use cloud-based business phone and IVR systems to businesses nationwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 24 contacts → | ||||
Exact match “Their Upgrade is Our Standard At Simplii we believe in giving you more for your money.” Recorded in the RevenueBase company graph · Nov 5, 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 “telephony software vendors”. 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 239 telephony software vendors based in the United States
See the full list, filter by size, metro and specialty, and access 1,198 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Telephony software vendors based in the United States at a glance
As of Nov 5, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 239 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “telephony software vendors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,198 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 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “telephony software vendors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many telephony software vendors are there based in the United States?
RevenueBase identified 239 company matches for telephony software vendors associated with the United States 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?
Aastra tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most telephony software vendors?
Atlanta leads with 7 company records, followed by Miami (6) and New York (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,198 professional contacts with verified work emails tracked across these 239 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 239 telephony software vendors based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Telephony software vendors by geography
- Telephony software vendors based in Australia
- Telephony software vendors based in Brazil
- Telephony software vendors based in Canada
- Telephony software vendors based in France
- Telephony software vendors based in Germany
- Telephony software vendors based in India
- Telephony software vendors based in Türkiye
- Telephony software vendors based in the United Kingdom
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Telephony software vendors based in Australia
- Telephony software vendors based in Brazil
- Telephony software vendors based in Canada
- Telephony software vendors based in France
- Telephony software vendors based in Germany
- Telephony software vendors based in India
Company intelligence · public preview
Top 25 telephony software vendors based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 239 matching company records for telephony software vendors based in the United States, with 5,216 tracked contacts and 1,198 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 5, 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 telephony software vendors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Aastraaastra.comHQ: Concord, TX, United StatesReported employees: 1,001-5,000 | Concord, TX, United States | 1,001-5,000 | Exact match | 315 contacts → |
“About Aastra Technologies Limited Aastra Technologies Limited (TSX: “AAH”), is a leading company at the forefront of the enterprise communication market.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Calltowercalltower.comHQ: South Jordan, UT, United StatesReported employees: 201-500 | South Jordan, UT, United States | 201-500 | Exact match | 258 contacts → |
“Since 2002, CallTower has been at the forefront of transforming global communication, emerging as a leader in enterprise-class cloud communication, collaboration, and CX solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Broadsoftbroadsoft.comHQ: Gaithersburg, MD, United StatesReported employees: 1,001-5,000 | Gaithersburg, MD, United States | 1,001-5,000 | Exact match | 253 contacts → |
“BroadSoft, now part of Cisco, is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Vail Systemsvailsys.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 218 contacts → |
“For over thirty years, Fortune 500 companies in financial services, retail and hospitality, software, and wireless communications industries have relied on Vail Systems’…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Voip Officevoipoffice.comHQ: Troy, MI, United StatesReported employees: 201-500 | Troy, MI, United States | 201-500 | Exact match | 199 contacts → |
“VoIP Office, founded in 2004, provides cloud-based communications and hosted PBX solutions that combine traditional PBX features with VoIP functionality.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Vertical Communicationsvertical.comHQ: Tempe, AZ, United StatesReported employees: 201-500 | Tempe, AZ, United States | 201-500 | Exact match | 185 contacts → |
“Vertical Communications is a leading provider of communications platforms and applications that enable critical business workflows for enterprises across a variety of industries…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  AVOXIavoxi.comHQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 170 contacts → |
“At AVOXI, we believe that voice conversations are essential for businesses to connect with customers across the globe.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Amtelcoamtelco.comHQ: Mcfarland, WI, United StatesReported employees: 51-200 | Mcfarland, WI, United States | 51-200 | Exact match | 121 contacts → |
“Amtelco has been a family-owned communication software company since 1976 and devoted to providing secure, stable, and critical communication solutions for healthcare, contact…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Star2starstar2star.comHQ: Sarasota, FL, United StatesReported employees: 201-500 | Sarasota, FL, United States | 201-500 | Exact match | 103 contacts → |
“Founded in 2006 in Sarasota, Florida, Star2Star Communications delivers the World's Leading Hybrid Cloud Communications Solution.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Alliance Global Communications LLCalliancecomms.comHQ: Plainsboro, NJ, United StatesReported employees: 51-200 | Plainsboro, NJ, United States | 51-200 | Exact match | 91 contacts → |
“Alliance Global is a cloud-based business phone system provider exclusively for organizations that require professional communication features.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Digiumdigium.comHQ: Huntsville, AL, United StatesReported employees: 51-200 | Huntsville, AL, United States | 51-200 | Exact match | 63 contacts → |
“Digium®, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  VOXOvoxo.coHQ: Hattiesburg, MS, United StatesReported employees: 11-50 | Hattiesburg, MS, United States | 11-50 | Exact match | 59 contacts → |
“VOXO offers phone systems and call center software for businesses with a focus on simplicity and customer satisfaction.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  West IP Communicationswestipc.comHQ: Louisville, KY, United StatesReported employees: Not recorded | Louisville, KY, United States | Not recorded | Exact match | 58 contacts → |
“West IP Communications, a wholly owned subsidiary of West Corporation, is a leading provider of cloud-based communications for the enterprise - including MPLS-based application…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Optivor Technologies, LLCoptivor.comHQ: Annapolis Junction, United StatesReported employees: 51-200 | Annapolis Junction, United States | 51-200 | Exact match | 46 contacts → |
“Optivor is a global leader in enterprise communications solutions and IT Services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Kloud 7kloud7.comHQ: Mobile, AL, United StatesReported employees: 11-50 | Mobile, AL, United States | 11-50 | Exact match | 43 contacts → |
“In an industry of tech giants and convoluted jargon, it’s easy to get overwhelmed.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Gold Systemsgoldsys.comHQ: Boulder, CO, United StatesReported employees: 51-200 | Boulder, CO, United States | 51-200 | Exact match | 41 contacts → |
“Gold Systems helps improve your profitability and increase customer satisfaction by developing and implementing unified communications and self-service solutions powered by voice.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  American Telephoneamericantelephone.comHQ: Scottsdale, NV, United StatesReported employees: 11-50 | Scottsdale, NV, United States | 11-50 | Exact match | 37 contacts → |
“American Telephone is an employee owned telecommunications company that has been proudly serving customers since 1982.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  United World Telecomunitedworldtelecom.comHQ: Delray Beach, FL, United StatesReported employees: 11-50 | Delray Beach, FL, United States | 11-50 | Exact match | 36 contacts → |
“United World Telecom is a global cloud telephony provider delivering enterprise-grade voice solutions in over 160 countries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Intelemedia Communicationsintelemedia.comHQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 35 contacts → |
“Since 1993, Intelemedia has developed sophisticated telephony and database solutions that transform how organizations more effectively manage call handling and caller experiences…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Unified Office, INCunifiedoffice.comHQ: Nashua, NH, United StatesReported employees: 11-50 | Nashua, NH, United States | 11-50 | Exact match | 34 contacts → |
“Unified Office is a leading communications technology company, constantly innovating to help its business customers and channel partners stay ahead in a rapidly changing world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Genusys INCgenusys.usHQ: Lewisville, TX, United StatesReported employees: 11-50 | Lewisville, TX, United States | 11-50 | Exact match | 30 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Co-Nexus NOW Telecompco-nexus.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 28 contacts → |
“TeleComp (formerly Co-nexus) provides hosted or managed IP Telephone Systems, Unified Communications, Call Center Solutions including Call Recording and Quality Monitoring.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Medtel Communicationsmedtelcom.comHQ: Bradenton, GA, United StatesReported employees: 51-200 | Bradenton, GA, United States | 51-200 | Exact match | 24 contacts → |
“Medtel Communications provides reliable and easy-to-use cloud-based business phone and IVR systems to businesses nationwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Simpliisimplii.netHQ: Sandy, UT, United StatesReported employees: 11-50 | Sandy, UT, United States | 11-50 | Exact match | 24 contacts → |
“Their Upgrade is Our Standard At Simplii we believe in giving you more for your money.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 239 company matches
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Telephony software vendors: dataset insights
November 5, 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
239 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 239 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 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for telephony software vendors?
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 telephony software vendors did RevenueBase find based in the United States?
The saved snapshot records 239 matching company records, 5,216 tracked contacts and 1,198 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 5, 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
Telephony software vendors by geography
- Telephony software vendors based in Australia
- Telephony software vendors based in Brazil
- Telephony software vendors based in Canada
- Telephony software vendors based in France
- Telephony software vendors based in Germany
- Telephony software vendors based in India
- Telephony software vendors based in Türkiye
- Telephony software vendors based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 telephony software vendors based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/telephony-software-vendors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Telephony software vendors based in Australia
- Telephony software vendors based in Brazil
- Telephony software vendors based in Canada
- Telephony software vendors based in France
- Telephony software vendors based in Germany
- Telephony software vendors based in India
Company intelligence · public preview
Top 25 telephony software vendors based in the United States
RevenueBase records 239 matching company records for telephony software vendors based in the United States, with 5,216 tracked contacts and 1,198 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 5, 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 telephony software vendors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Aastraaastra.com HQ: Concord, TX, United StatesReported employees: 1,001-5,000 | Concord, TX, United States | 1,001-5,000 | Exact match | 315 contacts → |
“About Aastra Technologies Limited Aastra Technologies Limited (TSX: “AAH”), is a leading company at the forefront of the enterprise communication market.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Calltowercalltower.com HQ: South Jordan, UT, United StatesReported employees: 201-500 | South Jordan, UT, United States | 201-500 | Exact match | 258 contacts → |
“Since 2002, CallTower has been at the forefront of transforming global communication, emerging as a leader in enterprise-class cloud communication, collaboration, and CX solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Broadsoftbroadsoft.com HQ: Gaithersburg, MD, United StatesReported employees: 1,001-5,000 | Gaithersburg, MD, United States | 1,001-5,000 | Exact match | 253 contacts → |
“BroadSoft, now part of Cisco, is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Vail Systemsvailsys.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 218 contacts → |
“For over thirty years, Fortune 500 companies in financial services, retail and hospitality, software, and wireless communications industries have relied on Vail Systems’…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Voip Officevoipoffice.com HQ: Troy, MI, United StatesReported employees: 201-500 | Troy, MI, United States | 201-500 | Exact match | 199 contacts → |
“VoIP Office, founded in 2004, provides cloud-based communications and hosted PBX solutions that combine traditional PBX features with VoIP functionality.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Vertical Communicationsvertical.com HQ: Tempe, AZ, United StatesReported employees: 201-500 | Tempe, AZ, United States | 201-500 | Exact match | 185 contacts → |
“Vertical Communications is a leading provider of communications platforms and applications that enable critical business workflows for enterprises across a variety of industries…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | AVOXIavoxi.com HQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 170 contacts → |
“At AVOXI, we believe that voice conversations are essential for businesses to connect with customers across the globe.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Amtelcoamtelco.com HQ: Mcfarland, WI, United StatesReported employees: 51-200 | Mcfarland, WI, United States | 51-200 | Exact match | 121 contacts → |
“Amtelco has been a family-owned communication software company since 1976 and devoted to providing secure, stable, and critical communication solutions for healthcare, contact…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Star2starstar2star.com HQ: Sarasota, FL, United StatesReported employees: 201-500 | Sarasota, FL, United States | 201-500 | Exact match | 103 contacts → |
“Founded in 2006 in Sarasota, Florida, Star2Star Communications delivers the World's Leading Hybrid Cloud Communications Solution.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Alliance Global Communications LLCalliancecomms.com HQ: Plainsboro, NJ, United StatesReported employees: 51-200 | Plainsboro, NJ, United States | 51-200 | Exact match | 91 contacts → |
“Alliance Global is a cloud-based business phone system provider exclusively for organizations that require professional communication features.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Digiumdigium.com HQ: Huntsville, AL, United StatesReported employees: 51-200 | Huntsville, AL, United States | 51-200 | Exact match | 63 contacts → |
“Digium®, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | VOXOvoxo.co HQ: Hattiesburg, MS, United StatesReported employees: 11-50 | Hattiesburg, MS, United States | 11-50 | Exact match | 59 contacts → |
“VOXO offers phone systems and call center software for businesses with a focus on simplicity and customer satisfaction.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | West IP Communicationswestipc.com HQ: Louisville, KY, United StatesReported employees: Not recorded | Louisville, KY, United States | Not recorded | Exact match | 58 contacts → |
“West IP Communications, a wholly owned subsidiary of West Corporation, is a leading provider of cloud-based communications for the enterprise - including MPLS-based application…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Optivor Technologies, LLCoptivor.com HQ: Annapolis Junction, United StatesReported employees: 51-200 | Annapolis Junction, United States | 51-200 | Exact match | 46 contacts → |
“Optivor is a global leader in enterprise communications solutions and IT Services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Kloud 7kloud7.com HQ: Mobile, AL, United StatesReported employees: 11-50 | Mobile, AL, United States | 11-50 | Exact match | 43 contacts → |
“In an industry of tech giants and convoluted jargon, it’s easy to get overwhelmed.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Gold Systemsgoldsys.com HQ: Boulder, CO, United StatesReported employees: 51-200 | Boulder, CO, United States | 51-200 | Exact match | 41 contacts → |
“Gold Systems helps improve your profitability and increase customer satisfaction by developing and implementing unified communications and self-service solutions powered by voice.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | American Telephoneamericantelephone.com HQ: Scottsdale, NV, United StatesReported employees: 11-50 | Scottsdale, NV, United States | 11-50 | Exact match | 37 contacts → |
“American Telephone is an employee owned telecommunications company that has been proudly serving customers since 1982.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | United World Telecomunitedworldtelecom.com HQ: Delray Beach, FL, United StatesReported employees: 11-50 | Delray Beach, FL, United States | 11-50 | Exact match | 36 contacts → |
“United World Telecom is a global cloud telephony provider delivering enterprise-grade voice solutions in over 160 countries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Intelemedia Communicationsintelemedia.com HQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 35 contacts → |
“Since 1993, Intelemedia has developed sophisticated telephony and database solutions that transform how organizations more effectively manage call handling and caller experiences…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Unified Office, INCunifiedoffice.com HQ: Nashua, NH, United StatesReported employees: 11-50 | Nashua, NH, United States | 11-50 | Exact match | 34 contacts → |
“Unified Office is a leading communications technology company, constantly innovating to help its business customers and channel partners stay ahead in a rapidly changing world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Genusys INCgenusys.us HQ: Lewisville, TX, United StatesReported employees: 11-50 | Lewisville, TX, United States | 11-50 | Exact match | 30 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Co-Nexus NOW Telecompco-nexus.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 28 contacts → |
“TeleComp (formerly Co-nexus) provides hosted or managed IP Telephone Systems, Unified Communications, Call Center Solutions including Call Recording and Quality Monitoring.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Medtel Communicationsmedtelcom.com HQ: Bradenton, GA, United StatesReported employees: 51-200 | Bradenton, GA, United States | 51-200 | Exact match | 24 contacts → |
“Medtel Communications provides reliable and easy-to-use cloud-based business phone and IVR systems to businesses nationwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Simpliisimplii.net HQ: Sandy, UT, United StatesReported employees: 11-50 | Sandy, UT, United States | 11-50 | Exact match | 24 contacts → |
“Their Upgrade is Our Standard At Simplii we believe in giving you more for your money.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 239 company matches
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Telephony software vendors: dataset insights
November 5, 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
239 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 239 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 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for telephony software vendors?
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 telephony software vendors did RevenueBase find based in the United States?
The saved snapshot records 239 matching company records, 5,216 tracked contacts and 1,198 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 5, 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
Telephony software vendors by geography
- Telephony software vendors based in Australia
- Telephony software vendors based in Brazil
- Telephony software vendors based in Canada
- Telephony software vendors based in France
- Telephony software vendors based in Germany
- Telephony software vendors based in India
- Telephony software vendors based in Türkiye
- Telephony software vendors based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 telephony software vendors based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/telephony-software-vendors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Telephony software vendors based in Australia
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- Telephony software vendors based in Canada
- Telephony software vendors based in France
- Telephony software vendors based in Germany
- Telephony software vendors based in India