Company lists · Data refreshed November 2026

Top 25 Multi-line phone system vendors based in the United States

RevenueBase identified 300 company matches for multi-line phone system vendors associated with the United States as of November 2026 and tracks 1,870 professional contacts across them, including 417 with verified work emails. Houston is the largest hub.

This list covers company matches for multi-line phone system 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 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
300Companies
1,870Contacts tracked
417Verified emails
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The 25 largest multi-line phone system vendors based in the United States

Ranked by team size
Top 25 of 300 company matches for multi-line phone system vendors 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 matchChesterfield, MO, United StatesHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“Since its founding in 1985, CMS Communications has been a leader in providing Telecom equipment and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact 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
4Exact matchFairfield, NJ, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“TelQuest International is dedicated to bringing the most competitive prices and the best customer service to all of our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGarden City, NY, United StatesHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“Metrotel Networks specializes in business phone system,business communications solutions, mobile worker communications, managed IT services, VOIP, cloud voice, business…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“In business since 1980, our experience is in providing solution driven communication products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLewisville, TX, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Our Mission “We are passionate about providing quality communication services that empower businesses and are paired with integrity and transparency at all stages.” The Vested…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLafayette, LA, United StatesHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“For small businesses and large corporations alike, LineOne™ offers scalable, high-quality business phone and networking solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWatsonville, CA, United StatesHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“TOTLCOM has been a dynamic telecommunications company for over 35 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSpringfield, MO, United StatesHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“Losh Network Services is an Authorized AVAYA Business Partner that specializes in the installation, service, and maintenance of VoIP and digital office telephone systems and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWoburn, MA, United StatesHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Since 1979, General Communications has been providing over businesses in New England and throughout the world with telephone systems and applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVentura, CA, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“i-NETT (formerly Voice Smart Networks) understands the critical role a telephone system plays in the smooth operation, growth and success of every business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBethpage, NY, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“ICC has been working in communications and infrastructure in the Greater New York Area for almost 40 years, and a big part of our business has always been helping organizations…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAuburn Hills, MI, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Businesses of all sizes depend on Techmode for their communications needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“STC Technologies knows technology and business phone systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSt. Louis, MO, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Clarus Communications designs, installs and supports IP phone systems, data, cloud services and telephony services nationwide for our clients and partners.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBay Shore, NY, United StatesHQ recorded Nov 6, 20261-1017 contacts →

Exact match

“At Telco Depot, our priority is helping our clients make informed decisions based on their specific Small Business Phone System needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBraintree, MA, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“One Call Does It All.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDavenport, IA, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“CREDENTIALS Midland Communications began more than 70 years ago in 1946 as the Worldwide Marketing Arm of Victor-Animagraph Projectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“Affiliated Communications was founded in 1984 to provide service and support for customers' voice communication needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchDoral, FL, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Quality Wiring is dedicated to providing your business with tomorrow’s telecommunications solutions today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWesterly, RI, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“As a leading sales organization, CCG Telecom specializes in delivering comprehensive telephony and VoIP solutions to businesses of all sizes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCary, NC, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“TSM South is an industry leader in the delivery of business telephone systems, data communications equipment and support service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWarwick, RI, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“At Rhode Island Telephone, we specialize in providing comprehensive telecommunications products and services for businesses of all sizes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLaporte, IN, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Founded in 1986 on a rich tradition of integrity, dedicated customer service, and timely cost-effective solutions, New Age Telecom, Inc.”

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

Showing 25 of 300 multi-line phone system vendors based in the United States

See the full list, filter by size, metro and specialty, and access 417 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Multi-line phone system vendors based in the United States at a glance

As of Nov 6, 2026
22.3%Verified-email coverage
6.2Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
173
11-50
116
51-200
8
201-500
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 300 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 “multi-line phone system 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 417 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 “multi-line phone system vendors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many multi-line phone system vendors are there based in the United States?

RevenueBase identified 300 company matches for multi-line phone system 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?

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

Which city has the most multi-line phone system vendors?

Houston leads with 5 company records, followed by Indianapolis (4) 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 417 professional contacts with verified work emails tracked across these 300 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 300 multi-line phone system vendors based in the United States. 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.