Company lists · Data refreshed September 2026

Top 25 Voice and data sales consultants worldwide

Name: Voice and data sales consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 14,115 companies tracked

RevenueBase identified 14,115 company matches for voice and data sales consultants worldwide as of September 2026 and tracks 171,722 professional contacts across them, including 40,754 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for voice and data sales 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 29, 2026. Country and city lists for voice and data sales 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 29, 2026 How this list was built

14,115Companies

171,722Contacts tracked

40,754Verified emails

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The 25 largest voice and data sales consultants worldwide

Ranked by team size

Top 25 of 14,115 company matches for voice and data sales consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	Amaris Consulting	Exact match	Chêne-bourg, SwitzerlandHQ recorded Sep 29, 2026	5,001-10,000	4,824 contacts →
	Exact match “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Spread Tecnologia	Exact match	São Paulo, BrazilHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
3	IES Communications	Exact match	Tempe, AZ, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
4	Tulip Telecom	Exact match	New Delhi, IndiaHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
5	Sofrecom Tunisie	Exact match	Tunis, TunisiaHQ recorded Sep 29, 2026	1,001-5,000	1,397 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Integra	Exact match	Vancouver, WA, United StatesHQ recorded Sep 29, 2026	501-1,000	1,133 contacts →
	Exact match “Integra is Allstream.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	CCI Systems	Exact match	Iron Mountain, MI, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
8	Kelly Group	Exact match	Wembley, United KingdomHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
9	KGPCO	Exact match	Faribault, MN, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
10	Líder Telecom Ltda	Exact match	São Paulo, BrazilHQ recorded Sep 29, 2026	1,001-5,000	959 contacts →
	Exact match “A Líder Telecom oferece aos clientes serviços de assessoria necessária ao estabelecimento de seu planejamento técnico e operacional para atendimento a redes corporativas de…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Multinet Pakistan Private Limited	Exact match	Karachi, PakistanHQ recorded Sep 29, 2026	1,001-5,000	890 contacts →
	Exact match “Multinet Pakistan is one of the premier information and communication solution providers for leading enterprises in the region.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	NTG Clarity	Exact match	Markham, ON, CanadaHQ recorded Sep 29, 2026	501-1,000	876 contacts →
	Exact match “NTG CLARITY is a leader in delivering network, telecom, IT and infrastructure solutions to network service providers and medium and large enterprises.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Mundivox Communications	Exact match	São Paulo, BrazilHQ recorded Sep 29, 2026	501-1,000	819 contacts →
	Exact match “Com mais de 25 anos de experiência, a Mundivox é uma operadora licenciada pela Anatel, especializada em soluções integradas de comunicação para o mercado corporativo.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Allied Telesis	Exact match	San Jose, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	816 contacts →
	Exact match “Our world is increasing in complexity.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Nunsys	Exact match	Paterna, SpainHQ recorded Sep 29, 2026	1,001-5,000	739 contacts →
	Exact match “NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Exponential-E	Exact match	London, United KingdomHQ recorded Sep 29, 2026	501-1,000	667 contacts →
	Exact match “Innovation is at the core of Exponential-e, and has been since our inception in 2002.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	VIS Networks	Exact match	Bangalore, IndiaHQ recorded Sep 29, 2026	201-500	666 contacts →
	Exact match “We @ VIS Networks (Voice Infrastructure Services) believe in the future of technology services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Telcos Ingeniería	Exact match	Bogotá D.c., ColombiaHQ recorded Sep 29, 2026	1,001-5,000	650 contacts →
	Exact match “Somos una organización especializada en la integración de soluciones efectivas que facilitan a las empresas del sector telecomunicaciones e infraestructura el logro de sus metas y…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	DDS Telecomunicações Ltda	Exact match	São Paulo, BrazilHQ recorded Sep 29, 2026	51-200	518 contacts →
	Exact match “A DDS é uma empresa de tecnologia especializada na integração de sistemas.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	NAE	Exact match	Barcelona, SpainHQ recorded Sep 29, 2026	501-1,000	503 contacts →
	Exact match “Nae is an international consulting firm specialized in the telecom sector, providing deal & strategy, business, and technology advisory services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Javi Systems India Pvt. LTD	Exact match	Gurgaon, IndiaHQ recorded Sep 29, 2026	201-500	468 contacts →
	Exact match “A privately held company Head Quartered in Bangalore and has a presence in New York.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	SIRT	Exact match	Barcelona, SpainHQ recorded Sep 29, 2026	201-500	449 contacts →
	Exact match “Experiencia, especialización y calidad de servicio son los tres valores clave en los que SIRT basa su actividad y la relación con sus clientes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Mikrolink	Exact match	İstanbul, TürkiyeHQ recorded Sep 29, 2026	1,001-5,000	426 contacts →
	Exact match “Mikrolink is a global systems integrator offering integrated solutions in telecommunications, data center technologies, and information & communication technologies (ICT).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Turnotech INC	Exact match	Redmond, WA, United StatesHQ recorded Sep 29, 2026	501-1,000	426 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Axians Germany	Exact match	Frankfurt Am Main, GermanyHQ recorded Sep 29, 2026	1,001-5,000	403 contacts →
	Exact match “AXIANS is the corporate brand for network infrastrucutures and corporate communications of VINCI Energies, one of the leading European providers of energy and information…” Recorded in the RevenueBase company graph · Sep 29, 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 “voice and data sales consultants”. 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 14,115 voice and data sales consultants worldwide

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Voice and data sales consultants worldwide at a glance

As of Sep 29, 2026

23.7%Verified-email coverage

12.2Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

7,347

11-50

5,045

51-200

1,292

201-500

248

501-1,000

1,001-5,000

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 voice and data sales consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “voice and data sales 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 40,754 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 29, 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.

Voice and data sales consultants by location

83 lists · largest first

Every Voice and data sales 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 “voice and data sales consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voice and data sales consultants are there worldwide?

RevenueBase identified 14,115 company matches for voice and data sales 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?

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

Which country has the most voice and data sales consultants?

The United States leads with 3,185 companies, followed by Brazil (895) and the United Kingdom (706). Every voice and data sales consultants list by country and city is linked on this page.

Which city has the most voice and data sales consultants?

Sao Paulo leads with 246 company records, followed by London (118) and Madrid (85).

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 40,754 professional contacts with verified work emails tracked across these 14,115 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 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 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.