Company lists · Data refreshed September 2026

Top 25 Telecom software integration firms worldwide

Name: Telecom software integration firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 9,934 companies tracked

RevenueBase identified 9,934 telecom software integration firms worldwide as of September 2026 and tracks 245,825 professional contacts across them, including 58,121 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecom software integration firms 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 software integration firms 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

9,934Companies

245,825Contacts tracked

58,121Verified emails

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The 25 largest telecom software integration firms worldwide

Ranked by team size

Top 25 of 9,934 telecom software integration firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecom software integration firms: 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	Amdocs	Indirect evidence	Chesterfield, MO, United StatesHQ checked Sep 29, 2026	10001+	39,863 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 29, 2026
2	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
3	CSG	Indirect evidence	Englewood, CO, United StatesHQ checked Sep 29, 2026	5,001-10,000	5,874 contacts →
	Indirect evidence “CSG is a leader in innovative customer engagement, revenue management and payments solutions that make ordinary customer experiences extraordinary.” Source: RevenueBase Database · checked Sep 29, 2026
4	Icomon Tecnologia Ltda	Partial evidence	São Paulo, BrazilHQ checked Sep 29, 2026	10001+	4,895 contacts →
	Partial evidence “A Icomon atua há 37 anos com alta performance em tecnologia e telecomunicações.” Source: RevenueBase Database · checked Sep 29, 2026
5	Tata Communications Transformation Services Tcts	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	4,599 contacts →
	Indirect evidence “Tata Communications Transformation Services (TCTS), a 100% subsidiary of Tata Communications Ltd, provides business transformation, managed network operations, network…” 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	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
8	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
9	Sofrecom Tunisie	Indirect evidence	Tunis, TunisiaHQ checked Sep 29, 2026	1,001-5,000	1,397 contacts →
	Indirect evidence “Sofrecom, filiale du groupe France Télécom - Orange, a développé depuis plus de 45 ans un savoir-faire unique dans les métiers de l’opérateur, qui en fait aujourd’hui l’un des…” Source: RevenueBase Database · checked Sep 29, 2026
10	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
11	Tecnotree Corporation	Indirect evidence	Espoo, FinlandHQ checked Sep 29, 2026	501-1,000	1,226 contacts →
	Indirect evidence “Headquartered in Finland, Tecnotree Corporation was founded in 1978 and is the leading provider of full-stack Digital BSS for CSPs and DSPs.” Source: RevenueBase Database · checked Sep 29, 2026
12	Huawei Technologies India	Partial evidence	Bengaluru, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,187 contacts →
	Partial evidence “Huawei Technologies India is the largest overseas software development center of Huawei, a leading global information and communications technology (ICT) solutions provider.” Source: RevenueBase Database · checked Sep 29, 2026
13	Vedang Cellular Services Pvt. LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,137 contacts →
	Partial 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
14	CCI Systems	Partial evidence	Iron Mountain, MI, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,077 contacts →
	Partial evidence “CCI Systems is an employee-owned solution provider specializing in telecommunications, comprehensive network assessments, industry-leading engineering, drafting and design…” Source: RevenueBase Database · checked Sep 29, 2026
15	Circles	Indirect evidence	SingaporeHQ checked Sep 29, 2026	501-1,000	1,003 contacts →
	Indirect evidence “Founded in 2014, Circles is a global technology company reimagining the telco industry with its innovative SaaS platform, empowering telco operators worldwide to effortlessly…” Source: RevenueBase Database · checked Sep 29, 2026
16	Bynet Data Communications	Partial evidence	Tel Aviv, IsraelHQ checked Sep 29, 2026	501-1,000	994 contacts →
	Partial evidence “As Israel's leading systems integrator, Bynet Data Communications offers comprehensive solutions and services that provide complete answers to organizations’ ICT and telecom needs.” Source: RevenueBase Database · checked Sep 29, 2026
17	NXO France	Strong evidence	Puteaux, FranceHQ checked Sep 29, 2026	1,001-5,000	945 contacts →
	Strong evidence “NXO is an independent leader in the Telecom integration market in France.” Source: RevenueBase Database · checked Sep 29, 2026
18	Wds-Sicap	Partial evidence	Baar, SwitzerlandHQ checked Sep 29, 2026	n/a	777 contacts →
	Partial evidence “We are leading provider of telecom business intelligence and device management solutions.” Source: RevenueBase Database · checked Sep 29, 2026
19	Telamon	Strong evidence	Carmel, IN, United StatesHQ checked Sep 29, 2026	1,001-5,000	739 contacts →
	Strong evidence “Telamon is a leading provider of connectivity integration, implementation, and distribution solutions for many of the world’s most recognized telecommunications, transportation…” Source: RevenueBase Database · checked Sep 29, 2026
20	Nunsys	Indirect evidence	Paterna, SpainHQ checked Sep 29, 2026	1,001-5,000	739 contacts →
	Indirect evidence “NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.” Source: RevenueBase Database · checked Sep 29, 2026
21	Elad Software Systems	Partial evidence	Tel Aviv, IsraelHQ checked Sep 29, 2026	501-1,000	709 contacts →
	Partial evidence “Elad is Israel’s Preeminent Software Solutions Provider of Customer Engagement Platforms, Digital Transformation Projects, Tools for Workplace Modernization and Professional…” Source: RevenueBase Database · checked Sep 29, 2026
22	OFG	Partial evidence	Córdoba, SpainHQ checked Sep 29, 2026	1,001-5,000	701 contacts →
	Partial evidence “OFG is an international company with more than 20 years of experience in the telecommunications sector.” Source: RevenueBase Database · checked Sep 29, 2026
23	Teleindia Networks PVT LTD	Partial evidence	Bangalore, IndiaHQ checked Sep 29, 2026	501-1,000	669 contacts →
	Partial evidence “Teleindia began its India operations in 2006, in the telecom vertical as a ‘Service Provider’ business unit with proven expertise, quality standards and efficient delivery…” Source: RevenueBase Database · checked Sep 29, 2026
24	VIS Networks	Indirect evidence	Bangalore, IndiaHQ checked Sep 29, 2026	201-500	666 contacts →
	Indirect evidence “We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.” Source: RevenueBase Database · checked Sep 29, 2026
25	Amantya Technologies	Indirect evidence	Gurugram, IndiaHQ checked Sep 29, 2026	501-1,000	662 contacts →
	Indirect evidence “Amantya Technologies is a pioneering force in product engineering and IT services, delivering practical, problem-solving technology across industries.” 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 software integration firms. 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 software integration firms.
Partial evidence: Its own public description names part of telecom software integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom software integration firms. 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 9,934 telecom software integration firms worldwide

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Telecom software integration firms worldwide at a glance

As of Sep 29, 2026

23.6%Verified-email coverage

24.7Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

4,167

11-50

3,785

51-200

1,370

201-500

357

501-1,000

113

1,001-5,000

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 software integration firms, 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 software integration firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecom software integration firms”. 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 software integration firms), 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 software integration firms, 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, 58,121 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 software integration firms by location

61 lists · largest first

Every Telecom software integration firms 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 software integration firms, 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 software integration firms are there worldwide?

RevenueBase identified 9,934 telecom software integration firms 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?

Amdocs, headquartered in Chesterfield, tops this list with the largest team on record.

Which country has the most telecom software integration firms?

The United States leads with 1,718 companies, followed by Brazil (661) and India (635). Every telecom software integration firms list by country and city is linked on this page.

Which city has the most telecom software integration firms?

Sao Paulo leads with 162 headquartered companies, followed by London (100) and Madrid (72).

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 58,121 verified decision-maker contacts tracked across these 9,934 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.