Company lists · Data refreshed September 2026

Top 25 Enterprise telephony consultants worldwide

RevenueBase identified 3,616 company matches for enterprise telephony consultants worldwide as of September 2026 and tracks 33,195 professional contacts across them, including 6,847 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for enterprise telephony consultants worldwide, 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 28, 2026. Country and city lists for enterprise telephony consultants follow the table.

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 28, 2026 How this list was built
3,616Companies
33,195Contacts tracked
6,847Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest enterprise telephony consultants worldwide

Ranked by team size
Top 25 of 3,616 company matches for enterprise telephony consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 matchNew Delhi, IndiaHQ recorded Sep 28, 20261,001-5,0001,481 contacts →

Exact match

“Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchBangalore, IndiaHQ recorded Sep 28, 2026201-500666 contacts →

Exact match

“We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchParis, FranceHQ recorded Sep 28, 2026501-1,000403 contacts →

Exact match

“VoIP/ToIP services Operator and Integrator Telephony solutions for small and medium-sized enterprises.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchTacoma, WA, United StatesHQ recorded Sep 28, 2026201-500366 contacts →

Exact match

“With three decades of expertise in the enterprise communications space, Continuant stands out as a seasoned Managed Services Provider, Systems Integrator, and Technology…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchBratislava, SlovakiaHQ recorded Sep 28, 2026501-1,000363 contacts →

Exact match

“One of the leading systems integrators in the European market today.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchLake Mary, FL, United StatesHQ recorded Sep 28, 2026n/a358 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchClichy, FranceHQ recorded Sep 28, 2026201-500319 contacts →

Exact match

“Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchPune, IndiaHQ recorded Sep 28, 2026201-500298 contacts →

Exact match

“Syntel is the Telecom Division of Arvind Limited, a flagship company of the INR 50 billion Lalbhai Group.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchOsasco, BrazilHQ recorded Sep 28, 2026201-500273 contacts →

Exact match

“A Handphone Telecomunicações é uma indústria, fabricante de equipamentos para Telecomunicações, tais como sistemas PABX de pequeno, médio e grande porte, sistemas Call Center's…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchEagan, MN, United StatesHQ recorded Sep 28, 2026501-1,000252 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchFlorianópolis, BrazilHQ recorded Sep 28, 2026201-500207 contacts →

Exact match

“Khomp is a Brazilian company, based in Santa Catarina, which provides leading edge technology for the development of convergence solutions between computer and telephony, in the…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchPort Washington, NY, United StatesHQ recorded Sep 28, 202651-200198 contacts →

Exact match

“Advantage mitigates the complexity of navigating a constantly evolving IT landscape.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchEdgewood, NY, United StatesHQ recorded Sep 28, 202651-200184 contacts →

Exact match

“Established in 1988, Forerunner Technologies, Inc.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchSlidell, LA, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
15Exact matchCincinnati, OH, United StatesHQ recorded Sep 28, 202611-50138 contacts →

Exact match

“MTCI serves businesses in defining, developing and executing more efficient, functional and cost-effective telecommunications programs.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchMinneapolis, MN, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
17Exact matchChennai, IndiaHQ recorded Sep 28, 202651-200131 contacts →

Exact match

“Unifiedvoice is a globally recognized VoIP service and solutions provider.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchMexicoHQ recorded Sep 28, 2026201-500131 contacts →

Exact match

“Más de 35 años de experiencia integrando servicios de telecomunicaciones, enfocándonos en proveer soluciones de Comunicaciones Unificadas, Wireless, Seguridad Informática y…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchFullerton, CA, United StatesHQ recorded Sep 28, 2026201-500123 contacts →

Exact match

“Altura Communication Solutions, with offices nationwide, is one of Avaya's largest Diamond Business Partners and a leading provider of communication-enabled solutions and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchMelbourne, AustraliaHQ recorded Sep 28, 202651-200113 contacts →

Exact match

“Your Trusted Partner in Digital Transformation and Communications Technology 30 Years of Innovation And Expertise GQI has been a trusted advisor and professional services provider…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchGuadalajara, MexicoHQ recorded Sep 28, 202611-50104 contacts →

Exact match

“Nos enfocamos en el diseño e implementación de sus soluciones en telecomunicaciones, así como el soporte de las mismas; participamos de manera activa en la cadena de valor del…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchPerpignan, FranceHQ recorded Sep 28, 202651-20097 contacts →

Exact match

“Onedirect aide les entreprises à optimiser leurs communications professionnelles depuis plus de 25 ans.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchSindelfingen, GermanyHQ recorded Sep 28, 202651-20096 contacts →

Exact match

“innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchMadrid, SpainHQ recorded Sep 28, 202651-20093 contacts →

Exact match

“mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchLahore, PakistanHQ recorded Sep 28, 202651-20092 contacts →

Exact match

“Contegris provides Consultancy, System Integration and Innovative Communication Technology Solutions focusing on the enterprise market.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 3,616 enterprise telephony consultants worldwide

See the full list, filter by size, metro and specialty, and access 6,847 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Enterprise telephony consultants worldwide at a glance

As of Sep 28, 2026
20.6%Verified-email coverage
9.2Average contacts per company
1-10Median size (employees)
2.2%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
2,067
11-50
1,261
51-200
214
201-500
41
501-1,000
8
1,001-5,000
8
5,001-10,000
2
10001+
3

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for enterprise telephony consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “enterprise telephony consultants” 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. 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 6,847 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 28, 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.

Enterprise telephony consultants by location

20 lists · largest first

Every Enterprise telephony consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “enterprise telephony consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many enterprise telephony consultants are there worldwide?

RevenueBase identified 3,616 company matches for enterprise telephony consultants worldwide 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?

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

Which country has the most enterprise telephony consultants?

The United States leads with 901 companies, followed by Brazil (318) and the United Kingdom (198). Every enterprise telephony consultants list by country and city is linked on this page.

Which city has the most enterprise telephony consultants?

Sao Paulo leads with 79 company records, followed by London (37) and New York (30).

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 6,847 professional contacts with verified work emails tracked across these 3,616 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,616 enterprise telephony consultants worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.