Company lists · Data refreshed September 2026

Top 25 Enterprise telephony consultants based in the United States

Name: Enterprise telephony consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 901 companies tracked

RevenueBase identified 901 enterprise telephony consultants headquartered in the United States as of September 2026 and tracks 9,645 professional contacts across them, including 2,474 with verified work emails. New York is the largest hub.

This list covers enterprise telephony consultants headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

901Companies

9,645Contacts tracked

2,474Verified emails

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The 25 largest enterprise telephony consultants based in the United States

Ranked by team size

Top 25 of 901 enterprise telephony consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise telephony consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Continuant	Partial evidence	Tacoma, WA, United StatesHQ checked Sep 28, 2026	201-500	366 contacts →
	Partial evidence “With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…” Source: RevenueBase Database · checked Sep 28, 2026
2	ACS	Partial evidence	Lake Mary, FL, United StatesHQ checked Sep 28, 2026	n/a	358 contacts →
	Partial evidence “ACS has over three decades of experience and unparalleled expertise in the assessment and implementation of voice and data platforms and can provide solutions for telephone…” Source: RevenueBase Database · checked Sep 28, 2026
3	NACR	Indirect evidence	Eagan, MN, United StatesHQ checked Sep 28, 2026	501-1,000	252 contacts →
	Indirect evidence “As the leading global integrator of business communication solutions and services since 1993, NACR has been a trusted advisor to more than 40% of the Fortune 100 companies…” Source: RevenueBase Database · checked Sep 28, 2026
4	Advantage Communications Group	Indirect evidence	Port Washington, NY, United StatesHQ checked Sep 28, 2026	51-200	198 contacts →
	Indirect evidence “Advantage mitigates the complexity of navigating a constantly evolving IT landscape.” Source: RevenueBase Database · checked Sep 28, 2026
5	Forerunner Technologies, INC	Indirect evidence	Edgewood, NY, United StatesHQ checked Sep 28, 2026	51-200	184 contacts →
	Indirect evidence “Established in 1988, Forerunner Technologies, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
6	In-Telecom	Indirect evidence	Slidell, LA, United StatesHQ checked Sep 28, 2026	51-200	151 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
7	MTCI	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 28, 2026	11-50	138 contacts →
	Indirect evidence “MTCI serves businesses in defining, developing and executing more efficient, functional and cost-effective telecommunications programs.” Source: RevenueBase Database · checked Sep 28, 2026
8	Unimax	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	51-200	133 contacts →
	Indirect evidence “Unimax believes that administering PBX and voice messaging systems can be far less complex and costly, while delivering better service levels.” Source: RevenueBase Database · checked Sep 28, 2026
9	Altura Communication Solutions	Indirect evidence	Fullerton, CA, United StatesHQ checked Sep 28, 2026	201-500	123 contacts →
	Indirect evidence “Altura Communication Solutions, with offices nationwide, is one of Avaya's largest Diamond Business Partners and a leading provider of communication-enabled solutions and…” Source: RevenueBase Database · checked Sep 28, 2026
10	Altigen Technologies	Indirect evidence	Newark, CA, United StatesHQ checked Sep 28, 2026	51-200	77 contacts →
	Indirect evidence “Altigen Technologies is focused on driving digital transformation in today's modern workplace.” Source: RevenueBase Database · checked Sep 28, 2026
11	Telecomp	Partial evidence	Rogers, AR, United StatesHQ checked Sep 28, 2026	51-200	74 contacts →
	Partial evidence “TeleComp is a full-service technology company offering Enterprise VoIP phone systems, Fiber Bandwidth, Cybersecurity/Compliance and Managed Services.” Source: RevenueBase Database · checked Sep 28, 2026
12	Unified Global Solutions LLC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	11-50	68 contacts →
	Indirect evidence “Business Class Phone Systems & Service with support & functionality to exceed your communication needs.” Source: RevenueBase Database · checked Sep 28, 2026
13	Icomm, INC	Partial evidence	Forest Park, IL, United StatesHQ checked Sep 28, 2026	51-200	63 contacts →
	Partial evidence “ICOMM is a services-first telecom management and consulting company, offering IT Telecom Expense Management, support services for fixed telephony, UCaaS and mobility services…” Source: RevenueBase Database · checked Sep 28, 2026
14	Conquest Technologies, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	54 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	Oit, LLC Oitvoip	Indirect evidence	Miami Lakes, FL, United StatesHQ checked Sep 28, 2026	11-50	54 contacts →
	Indirect evidence “OIT, LLC is a service-first organization that specializes in telecommunications and distributed networking.” Source: RevenueBase Database · checked Sep 28, 2026
16	Data Link	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 28, 2026	51-200	53 contacts →
	Indirect evidence “Our mission is to provide our clients with solutions and services required to operate on an efficient, effective, information highway.” Source: RevenueBase Database · checked Sep 28, 2026
17	Avatel Technologies	Indirect evidence	Brandon, FL, United StatesHQ checked Sep 28, 2026	11-50	53 contacts →
	Indirect evidence “As the world has changed so has the way businesses are expected to communicate.” Source: RevenueBase Database · checked Sep 28, 2026
18	OTG Consulting	Indirect evidence	Frisco, CO, United StatesHQ checked Sep 28, 2026	201-500	53 contacts →
	Indirect evidence “OTG Consulting: Your AI-Driven Technology Advisory OTG Consulting is a collective of top-tier telecom and technology executives helping businesses embrace the future.” Source: RevenueBase Database · checked Sep 28, 2026
19	Laketec	Indirect evidence	North Olmsted, OH, United StatesHQ checked Sep 28, 2026	51-200	51 contacts →
	Indirect evidence “Laketec is a leading technology provider serving customers in Northern Ohio and throughout the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
20	VOX Network Solutions	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	49 contacts →
	Indirect evidence “A HIGHER PURPOSE VOX is a modern technology company that truly wants to make a difference in the world.” Source: RevenueBase Database · checked Sep 28, 2026
21	Clearlyip	Indirect evidence	Appleton, WI, United StatesHQ checked Sep 28, 2026	201-500	45 contacts →
	Indirect evidence “14IP is a global software development and technology company specialising in telecommunications.” Source: RevenueBase Database · checked Sep 28, 2026
22	TCI	Indirect evidence	Springfield, VA, United StatesHQ checked Sep 28, 2026	11-50	45 contacts →
	Indirect evidence “Since 1980, TCI has provided advanced telecommunication, voice, data and networking solutions.” Source: RevenueBase Database · checked Sep 28, 2026
23	Suntel Services, A Cbts Company	Indirect evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	51-200	43 contacts →
	Indirect evidence “SunTel Services has provided complete life cycle services for unified communication services as a Michigan based company since 1986.” Source: RevenueBase Database · checked Sep 28, 2026
24	Optivor Technologies, LLC	Partial evidence	Annapolis Junction, United StatesHQ checked Sep 28, 2026	51-200	41 contacts →
	Partial evidence “Optivor is a global leader in enterprise communications solutions and IT Services.” Source: RevenueBase Database · checked Sep 28, 2026
25	Telquest International	Indirect evidence	Fairfield, NJ, United StatesHQ checked Sep 28, 2026	51-200	41 contacts →
	Indirect evidence “TelQuest International is dedicated to bringing the most competitive prices and the best customer service to all of our clients.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: enterprise telephony consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names enterprise telephony consultants.
Partial evidence: Its own public description names part of enterprise telephony consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise telephony consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 901 enterprise telephony consultants based in the United States

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Enterprise telephony consultants based in the United States at a glance

As of Sep 28, 2026

25.7%Verified-email coverage

10.7Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

512

11-50

326

51-200

201-500

501-1,000

1,001-5,000

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 901 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among enterprise telephony consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “enterprise telephony consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names enterprise telephony consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among enterprise telephony consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 2,474 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Enterprise telephony consultants by metro

Enterprise telephony consultants in New York30

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names enterprise telephony consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many enterprise telephony consultants are there based in the United States?

RevenueBase identified 901 enterprise telephony consultants headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Continuant, headquartered in Tacoma, tops this list with the largest team on record.

Which city has the most enterprise telephony consultants?

New York leads with 30 headquartered companies, followed by Dallas (19) and Houston (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,474 verified decision-maker contacts tracked across these 901 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 Smart Search, 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.