Company lists · Data refreshed September 2026

Top 25 Telephony integration software providers based in the United States

RevenueBase identified 208 company matches for telephony integration software providers associated with the United States as of September 2026 and tracks 9,193 professional contacts across them, including 4,237 with verified work emails. Atlanta is the largest hub.

This list covers company matches for telephony integration software providers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
208Companies
9,193Contacts tracked
4,237Verified emails
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The 25 largest telephony integration software providers based in the United States

Ranked by team size
Top 25 of 208 company matches for telephony integration software providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBelmont, CA, United StatesHQ recorded Sep 29, 20265,001-10,0006,431 contacts →

Exact match

“RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchChicago, IL, United StatesHQ recorded Sep 29, 202651-200214 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 · Sep 29, 2026 · View company records in RevenueBase
3Exact matchEdgewood, NY, United StatesHQ recorded Sep 29, 202651-200184 contacts →

Exact match

“Established in 1988, Forerunner Technologies, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchSlidell, LA, United StatesHQ recorded Sep 29, 202651-200151 contacts →

Exact match

“In-Telecom offers a full spectrum of solutions such as VoIP phones, access control, unparalleled customer service, IT consulting, and quality workmanship from our experienced…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchMinneapolis, MN, United StatesHQ recorded Sep 29, 202651-200133 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 · Sep 29, 2026 · View company records in RevenueBase
6Exact matchMcfarland, WI, United StatesHQ recorded Sep 29, 202651-200118 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 · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Sep 29, 202651-200103 contacts →

Exact match

“OpenPhone (now Quo) is the collaborative phone system trusted by teams at over 90k businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchPlainsboro, NJ, United StatesHQ recorded Sep 29, 202651-20091 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 · Sep 29, 2026 · View company records in RevenueBase
9Exact matchRichmond, VA, United StatesHQ recorded Sep 29, 202611-5090 contacts →

Exact match

“AMC Technology is a services-led contact center integration company with over 30 years of hands-on expertise.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchAtlanta, GA, United StatesHQ recorded Sep 29, 202651-20059 contacts →

Exact match

“With offices worldwide and certification by leading technology providers, including Buzzeasy, Avaya, Microsoft, Genesys, and Cisco, Geomant is a well-established, innovative…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchSouth Jordan, UT, United StatesHQ recorded Sep 29, 202651-20046 contacts →

Exact match

“Xima Software is dedicated to enabling companies to better manage their business through innovative contact center solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchAppleton, WI, United StatesHQ recorded Sep 29, 2026201-50045 contacts →

Exact match

“14IP is a global software development and technology company specialising in telecommunications.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchBoulder, CO, United StatesHQ recorded Sep 29, 202651-20039 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 · Sep 29, 2026 · View company records in RevenueBase
14Exact matchSt George, UT, United StatesHQ recorded Sep 29, 202611-5034 contacts →

Exact match

“Business Phones for Small and Medium Businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchPlano, TX, United StatesHQ recorded Sep 29, 202651-20034 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 · Sep 29, 2026 · View company records in RevenueBase
16Exact matchBlue Bell, PA, United StatesHQ recorded Sep 29, 202611-5030 contacts →

Exact match

“Axxess Networks founders have been in the Telecom and IT field for over 40 years.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchMilton, GA, United StatesHQ recorded Sep 29, 202611-5030 contacts →

Exact match

“Since it’s foundation in the year 2002, Spark Technology Group Inc provides excellent hosted IVR and integration services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchLewisville, TX, United StatesHQ recorded Sep 29, 202611-5028 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchDelray Beach, FL, United StatesHQ recorded Sep 29, 202611-5026 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 · Sep 29, 2026 · View company records in RevenueBase
20Exact matchAlpharetta, GA, United StatesHQ recorded Sep 29, 202651-20023 contacts →

Exact match

“We provide software and integration services to help enterprises transition from phone support to new digital channels and self-service applications.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchHollywood, CA, United StatesHQ recorded Sep 29, 202611-5023 contacts →

Exact match

“Fastcall - a CTI phone and SMS dialer 100% dedicated to and built for Salesforce - boasts some of the highest ratings for CTIs and phone dialer systems in the Salesforce…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchEphrata, PA, United StatesHQ recorded Sep 29, 202651-20022 contacts →

Exact match

“Landis Technologies UC Software division provides Contact Center, Attendant Console and other products for Microsoft Teams”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchWilmington, DE, United StatesHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“VoxSun Telecom, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchMiami, FL, United StatesHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“Redmond Software is a software vendor and systems integrator specialized in the development of advanced telecommunications products, including- Value-Added services platforms for…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchSan Antonio, TX, United StatesHQ recorded Sep 29, 202611-5021 contacts →

Exact match

“PhoneIQ is an AI-powered front desk that helps businesses answer every call, capture every opportunity, and never let revenue go to voicemail.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 208 telephony integration software providers based in the United States

See the full list, filter by size, metro and specialty, and access 4,237 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telephony integration software providers based in the United States at a glance

As of Sep 29, 2026
46.1%Verified-email coverage
44.2Average contacts per company
11-50Median size (employees)
3.8%Largest-city concentration · Atlanta
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
78
51-200
35
201-500
5
5,001-10,000
1

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 208 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 integration software providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 4,237 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 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 integration software providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telephony integration software providers are there based in the United States?

RevenueBase identified 208 company matches for telephony integration software providers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ringcentral tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telephony integration software providers?

Atlanta leads with 8 company records, followed by Dallas (6) and Miami (6).

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 4,237 professional contacts with verified work emails tracked across these 208 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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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.