Company lists · Data refreshed September 2026

Top 25 Telecom systems integrators worldwide

Name: Telecom systems integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 20,072 companies tracked

RevenueBase identified 20,072 telecom systems integrators worldwide as of September 2026 and tracks 404,732 professional contacts across them, including 93,368 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecom systems integrators 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 telecom systems integrators 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

20,072Companies

404,732Contacts tracked

93,368Verified emails

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The 25 largest telecom systems integrators worldwide

Ranked by team size

Top 25 of 20,072 telecom systems integrators worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecom systems integrators: 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	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 29, 2026	10001+	8,011 contacts →
	Partial 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	PT Performance Technologies, INC	Strong evidence	Rochester, NY, United StatesHQ checked Sep 29, 2026	n/a	6,332 contacts →
	Strong evidence “PT, a global supplier of advanced network solutions, offers Diameter and SS7 Signaling Systems delivering advanced routing/applications to SS7, 4G/LTE, and IMS telecom networks.” Source: RevenueBase Database · checked Sep 29, 2026
3	Convergint	Strong evidence	Hoffman Estates, IL, United StatesHQ checked Sep 29, 2026	10001+	5,707 contacts →
	Strong 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
4	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
5	Velocis Systems Private Limited	Strong evidence	Noida, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,637 contacts →
	Strong evidence “As one of India’s leading system integrators, Velocis partners with organizations to turn technology into a catalyst for measurable business value.” Source: RevenueBase Database · checked Sep 29, 2026
6	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
7	Allied Digital	Strong evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,475 contacts →
	Strong 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
8	SVA System Vertrieb Alexander Gmbh	Strong evidence	Wiesbaden, GermanyHQ checked Sep 29, 2026	1,001-5,000	2,452 contacts →
	Strong evidence “Imprint: SVA is one of the leading system integrators in Germany.” Source: RevenueBase Database · checked Sep 29, 2026
9	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
10	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
11	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
12	Radisys	Partial evidence	Hillsboro, OR, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,742 contacts →
	Partial evidence “Radisys is a proven, global leader in open telecom solutions and services.” Source: RevenueBase Database · checked Sep 29, 2026
13	Camusat	Partial evidence	Paris, FranceHQ checked Sep 29, 2026	1,001-5,000	1,726 contacts →
	Partial 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
14	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
15	Telecon	Partial evidence	Montreal, QC, CanadaHQ checked Sep 29, 2026	1,001-5,000	1,573 contacts →
	Partial 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
16	SIBCA	Strong evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 29, 2026	1,001-5,000	1,504 contacts →
	Strong 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
17	Tulip Telecom	Partial evidence	New Delhi, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,481 contacts →
	Partial evidence “Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Source: RevenueBase Database · checked Sep 29, 2026
18	Aerial Telecom Solutions	Strong evidence	Mohali, IndiaHQ checked Sep 29, 2026	5,001-10,000	1,388 contacts →
	Strong evidence “Aerial Telecom Solutions Private Limited is a global systems integrator and technology partner, driving next-generation connectivity and digital transformation across diverse…” Source: RevenueBase Database · checked Sep 29, 2026
19	Italtel	Indirect evidence	Milan, GermanyHQ checked Sep 29, 2026	1,001-5,000	1,279 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
20	ADC	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 29, 2026	5,001-10,000	1,271 contacts →
	Indirect evidence “We help the world communicate, supplying network equipment, software solutions, and integration services for broadband, multiservice networks that deliver data, video, and voice…” Source: RevenueBase Database · checked Sep 29, 2026
21	Malomatia	Strong evidence	Doha, QatarHQ checked Sep 29, 2026	1,001-5,000	1,249 contacts →
	Strong evidence “malomatia, Qatar’s leading systems integrator, is committed to propelling the nation’s digital transformation journey.” Source: RevenueBase Database · checked Sep 29, 2026
22	Alpha Data	Strong evidence	Uae - Saudi - Qatar, United Arab EmiratesHQ checked Sep 29, 2026	1,001-5,000	1,246 contacts →
	Strong evidence “As one of the leading Digital Transformation providers & System Integrators in the Middle East, with offices in the UAE, Saudi Arabia, and Qatar, Alpha Data empowers thousands of…” Source: RevenueBase Database · checked Sep 29, 2026
23	Site SPA	Partial evidence	Bologna, ItalyHQ checked Sep 29, 2026	1,001-5,000	1,221 contacts →
	Partial evidence “SITE fornisce servizi di System Integration, nella realizzazione di infrastrutture e impianti tecnologici.” Source: RevenueBase Database · checked Sep 29, 2026
24	Vedang Cellular Services Pvt. LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,137 contacts →
	Strong evidence “Vedang Cellular Services - A Bluspring Enterprise is India’s leading master system integrator enabling large-scale telecom and digital infrastructure across 22 circles covering…” Source: RevenueBase Database · checked Sep 29, 2026
25	Zelenza	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	1,001-5,000	1,125 contacts →
	Indirect evidence “En Zelenza somos líderes en servicios integrados TIC, Ingeniería de Redes Telco, Defensa y Seguridad y Customer Experience.” 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: telecom systems integrators. 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 telecom systems integrators.
Partial evidence: Its own public description names part of telecom systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom systems integrators. 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 20,072 telecom systems integrators worldwide

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Telecom systems integrators worldwide at a glance

As of Sep 29, 2026

23.1%Verified-email coverage

20.2Average 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

7,702

11-50

8,218

51-200

2,905

201-500

716

501-1,000

255

1,001-5,000

154

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 telecom systems integrators, 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 telecom systems integrators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecom systems integrators”. 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 telecom systems integrators), 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 telecom systems integrators, 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, 93,368 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.

Telecom systems integrators by location

124 lists · largest first

Every Telecom systems 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 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 telecom systems integrators, 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 telecom systems integrators are there worldwide?

RevenueBase identified 20,072 telecom systems integrators 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 telecom systems integrators?

The United States leads with 3,782 companies, followed by India (1,098) and Italy (917). Every telecom systems integrators list by country and city is linked on this page.

Which city has the most telecom systems integrators?

Sao Paulo leads with 238 headquartered companies, followed by Dubai (223) and Riyadh (146).

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 93,368 verified decision-maker contacts tracked across these 20,072 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.