Company lists · Data refreshed September 2026

Top 25 Communication system integrators worldwide

Name: Communication system integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 18,527 companies tracked

RevenueBase identified 18,527 company matches for communication system integrators worldwide as of September 2026 and tracks 377,386 professional contacts across them, including 96,637 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for communication system integrators 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 19, 2026. Country and city lists for communication system integrators 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 19, 2026 How this list was built

18,527Companies

377,386Contacts tracked

96,637Verified emails

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The 25 largest communication system integrators worldwide

Ranked by team size

Top 25 of 18,527 company matches for communication system integrators worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Telefónica	Exact match	Madrid, SpainHQ recorded Sep 19, 2026	10001+	54,718 contacts →
	Exact match “Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 19, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Airtel Business	Exact match	Gurgaon, IndiaHQ recorded Sep 19, 2026	10001+	2,760 contacts →
	Exact match “The B2B arm of Bharti Airtel, we are India's leading provider of secure and reliable connectivity, technology, and communications solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Automated Systems Design, INC	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 19, 2026	n/a	2,678 contacts →
	Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Procisa DO Brasil	Exact match	São Paulo, BrazilHQ recorded Sep 19, 2026	1,001-5,000	2,538 contacts →
	Exact match “Prazer, somos a Procisa do Brasil!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Spread Tecnologia	Exact match	São Paulo, BrazilHQ recorded Sep 19, 2026	1,001-5,000	2,521 contacts →
	Exact match “With over 30 years of experience in Information and Communication Technology market, the Spread has extensive experience and expertise in the field and has the challenge of…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	SVA System Vertrieb Alexander Gmbh	Exact match	Wiesbaden, GermanyHQ recorded Sep 19, 2026	1,001-5,000	2,452 contacts →
	Exact match “Imprint: SVA is one of the leading system integrators in Germany.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Sirti S.P.A	Exact match	Sesto San Giovanni (mi), ItalyHQ recorded Sep 19, 2026	1,001-5,000	2,332 contacts →
	Exact match “Sirti is Italy's leading technology company in the design and production of network infrastructures and telecoms system integration.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Granite Telecommunications	Exact match	Quincy, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,270 contacts →
	Exact match “Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Unifique	Exact match	Timbó, BrazilHQ recorded Sep 19, 2026	1,001-5,000	1,807 contacts →
	Exact match “Somos uma empresa de telecomunicações com 28 anos de atuação.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	IES Communications	Exact match	Tempe, AZ, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,800 contacts →
	Exact match “IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Consort Group	Exact match	Paris, FranceHQ recorded Sep 19, 2026	1,001-5,000	1,704 contacts →
	Exact match “Acteur de référence des systèmes d’information augmentés par l’intégration stratégique de la data, Consort Group accompagne les entreprises pour leur permettre de valoriser ce…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Telecon	Exact match	Montreal, QC, CanadaHQ recorded Sep 19, 2026	1,001-5,000	1,573 contacts →
	Exact match “From a regional telecom networks builder in 1967 in Quebec (Canada), Telecon has grown into a world-class industry-leading telecom networks design, infrastructure and connectivity…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	GAMMA	Exact match	London, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	1,568 contacts →
	Exact match “Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Tulip Telecom	Exact match	New Delhi, IndiaHQ recorded Sep 19, 2026	1,001-5,000	1,481 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 19, 2026 · View company records in RevenueBase
16	Aerial Telecom Solutions	Exact match	Mohali, IndiaHQ recorded Sep 19, 2026	5,001-10,000	1,388 contacts →
	Exact match “Aerial Telecom Solutions Private Limited is a global systems integrator and technology partner, driving next-generation connectivity and digital transformation across diverse…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Italtel	Exact match	Milan, GermanyHQ recorded Sep 19, 2026	1,001-5,000	1,279 contacts →
	Exact match “We help our customers to choose the most suitable solutions for the characteristics of their business, to develop the traditional communication technologies they already have in…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Rovisys	Exact match	Aurora, OH, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,159 contacts →
	Exact match “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Integra	Exact match	Vancouver, WA, United StatesHQ recorded Sep 19, 2026	501-1,000	1,133 contacts →
	Exact match “Integra is Allstream.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Bandwidth INC	Exact match	Raleigh, NC, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,128 contacts →
	Exact match “Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	CCI Systems	Exact match	Iron Mountain, MI, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,077 contacts →
	Exact match “CCI Systems is an employee-owned solution provider specializing in telecommunications, comprehensive network assessments, industry-leading engineering, drafting and design…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Kelly Group	Exact match	Wembley, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	1,053 contacts →
	Exact match “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	E2 Optics	Exact match	Englewood, CO, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,001 contacts →
	Exact match “E2 Optics is an award-winning, woman-owned, low voltage IT solutions integrator.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Bynet Data Communications	Exact match	Tel Aviv, IsraelHQ recorded Sep 19, 2026	501-1,000	994 contacts →
	Exact match “As Israel's leading systems integrator, Bynet Data Communications offers comprehensive solutions and services that provide complete answers to organizations’ ICT and telecom needs.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	KGPCO	Exact match	Faribault, MN, United StatesHQ recorded Sep 19, 2026	1,001-5,000	974 contacts →
	Exact match “KGPCo is a key strategic partner to the world’s leading communication and technology companies creating the next generation of networks.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “communication system integrators”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 18,527 communication system integrators worldwide

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Communication system integrators worldwide at a glance

As of Sep 19, 2026

25.6%Verified-email coverage

20.4Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

7,500

11-50

7,663

51-200

2,451

201-500

521

501-1,000

170

1,001-5,000

112

5,001-10,000

10001+

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 communication system integrators are linked below.
What qualifies: Company records worldwide whose business descriptions match “communication system integrators” 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 96,637 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 19, 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.

Communication system integrators by location

85 lists · largest first

Every Communication system integrators 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 “communication system integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many communication system integrators are there worldwide?

RevenueBase identified 18,527 company matches for communication system integrators 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?

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

Which country has the most communication system integrators?

The United States leads with 4,236 companies, followed by the United Kingdom (1,094) and India (857). Every communication system integrators list by country and city is linked on this page.

Which city has the most communication system integrators?

Sao Paulo leads with 222 company records, followed by Dubai (180) and London (155).

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 96,637 professional contacts with verified work emails tracked across these 18,527 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 19, 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.