Company lists · Data refreshed November 2026

Top 25 Phone system support providers based in the United States

RevenueBase identified 1,528 company matches for phone system support providers associated with the United States as of November 2026 and tracks 13,486 professional contacts across them, including 4,025 with verified work emails. New York is the largest hub.

This list covers company matches for phone system support 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 November 6, 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 Nov 6, 2026 How this list was built
1,528Companies
13,486Contacts tracked
4,025Verified emails
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The 25 largest phone system support providers based in the United States

Ranked by team size
Top 25 of 1,528 company matches for phone system support providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchLenexa, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,356 contacts →

Exact match

“Wachter is on the cutting-edge of technology and infrastructure installation and has been since 1930.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMaryland Heights, MO, United StatesHQ recorded Nov 6, 2026201-500387 contacts →

Exact match

“GFI Digital was established in by local Founder and President Bruce Gibbs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202651-200176 contacts →

Exact match

“Edge is an innovative provider of communications, data, systems security and business technology services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSacramento, CA, United StatesHQ recorded Nov 6, 2026n/a175 contacts →

Exact match

“Fortis is a Sacramento Area provider of managed IT services, hosted VoIP, and high speed, redundant internet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMary Esther, FL, United StatesHQ recorded Nov 6, 2026501-1,000169 contacts →

Exact match

“Launched in 2005, Adcomm was a pioneer in the market for on-site installation of Satellite TV for dealers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSummit, NJ, United StatesHQ recorded Nov 6, 2026201-500150 contacts →

Exact match

“Ovation Workplace Services was established in 2019 and has seen a rapid growth in business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 202651-200143 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
8Exact matchKennesaw, GA, United StatesHQ recorded Nov 6, 2026201-500135 contacts →

Exact match

“IBBS provides fully-integrated data, voice and technical support services to cable and broadband providers to simplify their delivery of advanced communications into residential…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWood Dale, IL, United StatesHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“CPT Network Solutions is a national technology services provider helping retailers, senior living organizations, healthcare teams, and other multi-site businesses deploy and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGreenville, SC, United StatesHQ recorded Nov 6, 202651-200125 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
11Exact matchNaperville, United StatesHQ recorded Nov 6, 2026201-500108 contacts →

Exact match

“Since 1994, American Cable & Telephone, LLC (ACT) has been helping Cable Companies raise the bar in customer service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 2026n/a99 contacts →

Exact match

“Named MSP of the year in 2020, TeamLogic IT is a provider of a full spectrum of IT services and computer support for businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBoynton Beach, FL, United StatesHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Tech Service Today (TST) is a technology services company dedicated to helping IT leaders reclaim their nights and weekends.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMcmurray, PA, United StatesHQ recorded Nov 6, 2026201-50090 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
15Exact matchArvada, CO, United StatesHQ recorded Nov 6, 202611-5086 contacts →

Exact match

“We make workplace technology work for you.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchChattanooga, TN, United StatesHQ recorded Nov 6, 202611-5081 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
17Exact matchBend, OR, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“TechLink Services is the premier provider for the delivery of nationwide IT hardware installations and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 202611-5078 contacts →

Exact match

“Since 1984, United Systems has specialized as a “one-stop” provider for quality technology solutions that combine products with installation and comprehensive support to Oklahoma…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5078 contacts →

Exact match

“At ATSI, we believe technology should empower people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPittsburgh, PA, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Founded in 1973, Pittsburgh-based Dagostino Electronic Services, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchStaten Island, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Headquartered in New York City, InterGlobe Communications is a one stop network service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDoylestown, PA, United StatesHQ recorded Nov 6, 2026n/a67 contacts →

Exact match

“Itsalldata is first and foremost a business communications consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202611-5066 contacts →

Exact match

“Business Class Phone Systems & Service with support & functionality to exceed your communication needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBethlehem, PA, United StatesHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“ET & T is the premier provider of data, phone, cabling, IT, and security solutions in the Lehigh Valley, PA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPittsburgh, PA, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Full Service Network is a privately held Telecommunications Services Carrier based in Pittsburgh, Pennsylvania.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,528 phone system support providers based in the United States

See the full list, filter by size, metro and specialty, and access 4,025 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Phone system support providers based in the United States at a glance

As of Nov 6, 2026
29.8%Verified-email coverage
8.8Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
955
11-50
481
51-200
66
201-500
13
501-1,000
2
1,001-5,000
5
10001+
3

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 1,528 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “phone system support 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 4,025 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.

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 support providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many phone system support providers are there based in the United States?

RevenueBase identified 1,528 company matches for phone system support providers 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?

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

Which city has the most phone system support providers?

New York leads with 31 company records, followed by Houston (25) and Austin (18).

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 4,025 professional contacts with verified work emails tracked across these 1,528 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.

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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.