Company lists · Data refreshed September 2026

Top 25 Telecommunications systems integration companies worldwide

Name: Telecommunications systems integration companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 29,962 companies tracked

RevenueBase identified 29,962 telecommunications systems integration companies worldwide as of September 2026 and tracks 557,212 professional contacts across them, including 123,741 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecommunications systems integration companies worldwide, 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 29, 2026. Country and city lists for telecommunications systems integration companies follow the table.

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 29, 2026 86% judged on-target in blind review

29,962Companies

557,212Contacts tracked

123,741Verified emails

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The 25 largest telecommunications systems integration companies worldwide

Ranked by team size

Top 25 of 29,962 telecommunications systems integration companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications systems integration companies: 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	Serede	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 29, 2026	10001+	8,011 contacts →
	Indirect evidence “A Serede é uma empresa prestadora de serviços de implantação e manutenção em redes de Telecom, fundada em 06 de agosto de 2007.” Source: RevenueBase Database · checked Sep 29, 2026
2	Convergint	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 29, 2026	10001+	5,707 contacts →
	Partial evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 29, 2026
3	Circet	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	10001+	3,901 contacts →
	Indirect evidence “A global player in the telecom infrastructure services industry, the Circet Group provides operators, local authorities and key accounts throughout the world with an integrated…” Source: RevenueBase Database · checked Sep 29, 2026
4	Black BOX	Strong evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,667 contacts →
	Strong evidence “Black Box is a global leader in digital infrastructure solutions, delivering network and system integration, managed services, and technology products to Fortune 100 and top…” Source: RevenueBase Database · checked Sep 29, 2026
5	GTL Limited	Indirect evidence	Navi Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,780 contacts →
	Indirect evidence “GTL, a Global Group Enterprise, is a leading Network Services company, offering services and solutions to address the Network Life Cycle requirements of Telecom Operators…” Source: RevenueBase Database · checked Sep 29, 2026
6	Automated Systems Design, INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	n/a	2,678 contacts →
	Partial evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 29, 2026
7	Spread Tecnologia	Indirect evidence	São Paulo, BrazilHQ checked Sep 29, 2026	1,001-5,000	2,521 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
8	Allied Digital	Partial evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,475 contacts →
	Partial evidence “Allied Digital Services is a globally recognized leader in Digital Transformation and a Master Systems Integrator, with over four decades of proven experience.” Source: RevenueBase Database · checked Sep 29, 2026
9	SVA System Vertrieb Alexander Gmbh	Partial evidence	Wiesbaden, GermanyHQ checked Sep 29, 2026	1,001-5,000	2,452 contacts →
	Partial evidence “Imprint: SVA is one of the leading system integrators in Germany.” Source: RevenueBase Database · checked Sep 29, 2026
10	Sirti S.P.A	Strong evidence	Sesto San Giovanni (mi), ItalyHQ checked Sep 29, 2026	1,001-5,000	2,332 contacts →
	Strong evidence “Sirti is Italy's leading technology company in the design and production of network infrastructures and telecoms system integration.” Source: RevenueBase Database · checked Sep 29, 2026
11	Sogetrel	Indirect evidence	Issy Les Moulineaux, FranceHQ checked Sep 29, 2026	1,001-5,000	2,285 contacts →
	Indirect evidence “En première ligne de la transformation numérique des entreprises et des territoires, le Groupe Sogetrel est spécialisé dans les services aux infrastructures numériques et…” Source: RevenueBase Database · checked Sep 29, 2026
12	LCC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 29, 2026	5,001-10,000	2,193 contacts →
	Indirect evidence “In Feb.” Source: RevenueBase Database · checked Sep 29, 2026
13	Giza Systems	Partial evidence	Cairo, EgyptHQ checked Sep 29, 2026	1,001-5,000	1,975 contacts →
	Partial evidence “pulse by solutions (formerly known as Giza Systems Group) is the trusted global force behind critical industries, deploying the Intelligence That Transforms to accelerate digital…” Source: RevenueBase Database · checked Sep 29, 2026
14	NEC Corporation India PVT LTD	Indirect evidence	IndiaHQ checked Sep 29, 2026	1,001-5,000	1,972 contacts →
	Indirect evidence “NEC Corporation India, a wholly owned subsidiary of NEC Corporation, Japan, has operated in India since the 1950s, drawing on more than 127 years of technological innovation.” Source: RevenueBase Database · checked Sep 29, 2026
15	Kddi Corporation	Strong evidence	Tokyo, JapanHQ checked Sep 29, 2026	10001+	1,966 contacts →
	Strong evidence “We are Japan’s global telecommunications pioneer and a Global Fortune 500 company, providing our international customer base with data centers, networks, content delivery, system…” Source: RevenueBase Database · checked Sep 29, 2026
16	IES Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,800 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
17	Ninguno	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	n/a	1,744 contacts →
	Indirect evidence “Siadde Soluciones es una compañía tecnológica, innovadora y competitiva en un contexto global.” Source: RevenueBase Database · checked Sep 29, 2026
18	Camusat	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	1,001-5,000	1,726 contacts →
	Indirect evidence “Camusat is one of the market leaders in the implementation of telecom infrastructures and one of the most experienced network developers.” Source: RevenueBase Database · checked Sep 29, 2026
19	Consort Group	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	1,001-5,000	1,704 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
20	PT Berca Hardayaperkasa	Indirect evidence	Jakarta Pusat, IndonesiaHQ checked Sep 29, 2026	1,001-5,000	1,701 contacts →
	Indirect evidence “Since its establishment in 1990, PT.” Source: RevenueBase Database · checked Sep 29, 2026
21	Congruex	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,676 contacts →
	Indirect evidence “Congruex was formed in 2017 to take advantage of historic demand for digital connectivity.” Source: RevenueBase Database · checked Sep 29, 2026
22	CMS Computers India PVT LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	5,001-10,000	1,672 contacts →
	Indirect evidence “Founded as Computer Maintenance and Services Company in 1976, CMS Computers Limited is a pioneer and leader in the Indian ICT industry.” Source: RevenueBase Database · checked Sep 29, 2026
23	Telecon	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 29, 2026	1,001-5,000	1,573 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
24	Pt. Mora Telematika Indonesia TBK	Partial evidence	Jakarta Pusat, IndonesiaHQ checked Sep 29, 2026	1,001-5,000	1,510 contacts →
	Partial evidence “Moratelindo is part of PT Ekamas Mora RepublikTbk (MoraRepublic), one of Indonesia’s largest integrated infrastructure Telecommunication and connectivity providers.” Source: RevenueBase Database · checked Sep 29, 2026
25	SIBCA	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 29, 2026	1,001-5,000	1,504 contacts →
	Partial evidence “From humble beginnings in 1977, SIBCA has grown to become a leading Solution Integrator Provider in UAE for Fire Protection and Life Safety Systems, Security Systems, HVAC…” Source: RevenueBase Database · checked Sep 29, 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: telecommunications systems integration companies. 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 telecommunications systems integration companies.
Partial evidence: Its own public description names part of telecommunications systems integration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications systems integration companies. 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 29,962 telecommunications systems integration companies worldwide

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Telecommunications systems integration companies worldwide at a glance

As of Sep 29, 2026

22.2%Verified-email coverage

18.6Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

12,080

11-50

11,849

51-200

4,201

201-500

1,034

501-1,000

356

1,001-5,000

238

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 telecommunications systems integration companies, 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.
Coverage: Every country. Country and city lists for telecommunications systems integration companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecommunications systems integration companies”. 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 telecommunications systems integration companies), 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 telecommunications systems integration companies, and records with no verified work email.
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, 123,741 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 29, 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.

Telecommunications systems integration companies by location

167 lists · largest first

Every Telecommunications systems integration companies 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 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 telecommunications systems integration companies, 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 telecommunications systems integration companies are there worldwide?

RevenueBase identified 29,962 telecommunications systems integration companies worldwide 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?

Serede, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which country has the most telecommunications systems integration companies?

The United States leads with 5,880 companies, followed by India (1,530) and Brazil (1,469). Every telecommunications systems integration companies list by country and city is linked on this page.

Which city has the most telecommunications systems integration companies?

Sao Paulo leads with 374 headquartered companies, followed by Dubai (305) and Riyadh (200).

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 123,741 verified decision-maker contacts tracked across these 29,962 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 29, 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.