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Top Call Center Companies for Telecommunications

13 of 27 call center companies ranked on evidence in the Q4 2026 edition.

Between them, the 27 call center companies on this page cover business services (14), financial services (12), information technology (8) and medical (8). They also list work in Middle East, London and Beckenham. 27 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

13 of 27 call center companies ranked on evidence held on 9 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All call center companies 13 ranked SMEs 12 ranked

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Essentiel Outsourcing S.L
Consumer Products & Services · Business Services · Medical
Business process outsourcing firm providing multilingual customer service, sales support and back-office operations for companies
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Why #1: In business 10+ years · professional accreditation · Client numbers stated on its own website, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Impel Service & Solutions Limited (ISSL)
Consumer Products & Services · Business Services · Financial Services
Impel Service & Solutions Limited (ISSL) is a business process outsourcing firm based in Dhaka, Bangladesh.
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Why #2: Founded 2011 · ISO 9001 · Team of 250+, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Digital Telecommunication Corp (DTC)
Cloud · Also in California and Southern California
Digital Telecommunication Corp (DTC) is a systems integrator for business communications in Southern California.
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Why #3: Founded 1982, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Gregory Micallef Associates
Business Services · Financial Services · Real Estate · Also in London and Beckenham
London IT support and telephone systems firm for small and medium-sized organisations, with managed services and consultancy
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Why #4: Founded 1992, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
IT
Interstate Technologies
Also in Oxford and Melbourne
Interstate Technologies is an IT company that provides managed services, business telephone systems and computer networks in the Chicago metropolitan area.
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Why #5: In business 30+ years, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
HRC Technologies Limited (IGW)
Retail · Government · Also in Singapore
HRC Technologies Limited (IGW) is an international gateway operator that carries voice calls for carriers around the world.
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Why #6: Founded 1999, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Callboxs
Business Services
Callboxs is a call centre and business process outsourcing provider. Its background is in telemarketing and customer service by phone, e-mail and chat.
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Why #7 (shared): In business 20+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Lehman Consulting and Recruiting
Consumer Products & Services · Business Services · Information Technology
Recruitment firm placing hospitality, technology, customer service and healthcare professionals across the United States
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Why #7 (shared): In business 20+ years, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Direct TPV
Energy & Natural Resources · Business Services · Financial Services
Direct TPV provides third party verification using automated or live agent services.
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Why #9: In business 15+ years, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Ec3
Business Services · Financial Services · Call Centre
Ec3 is a contact centre outsourcing company based in Umhlanga, Durban, South Africa, serving global brands.
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Why #10: Founded 2013, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Daktela s.r.o.
Daktela s.r.o. makes cloud-based contact centre software that brings customer channels together in one application.
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Why #11 (shared): Client numbers stated on its own website, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Daktela UK
Daktela UK offers a cloud contact centre solution that brings all customer communications into one app.
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Why #11 (shared): Client numbers stated on its own website, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Apifonica
Advertising & Marketing · Information Technology · Retail
Apifonica is a customer communication platform that combines AI voice and chat agents with SMS, calling and number services.
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Why #11 (shared): ISO 27001, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
Voltron Operations
Supply Chain, Logistics, and Transport · Advertising & Marketing · Hospitality & Leisure · Also in Nottingham and Dublin
Welcome to Voltron Operations Call Centre , where exceptional customer service meets cutting-edge technology.
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3S
Business Services · Information Technology · Medical
3S is a telecommunications and IT company in Poland. Its TeleCloud platform brings together IP telephony, unified communications and call centre tools.
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Contact Point 360
Energy & Natural Resources · Business Services · Financial Services
Global customer experience outsourcing for enterprise brands, covering omnichannel support, multilingual service and speech analytics
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DBL Telecom Limited
Also in Chicago and Dubai
DBL Telecom Limited is an international gateway operator in Bangladesh that carries international voice traffic over VoIP and TDM technology.
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ET
Elision Technologies Pvt. Ltd
Business Services · Financial Services · Information Technology
Elision Technologies Pvt. Ltd is a telecom and contact centre technology company that builds omnichannel communication products for businesses.
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ETISAL International
Supply Chain, Logistics, and Transport · Financial Services · Information Technology · Also in Egypt
ETISAL International is an outsourcing business partner based in Egypt, providing voice and non-voice services to clients in several languages.
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Five9
Supply Chain, Logistics, and Transport · Consumer Products & Services · Advertising & Marketing
Five9 supplies cloud-based contact centre software, letting businesses run customer service and sales operations without on-site call centre hardware.
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Getoutsourced
Supply Chain, Logistics, and Transport · Advertising & Marketing · Information Technology · Also in Pristina
Getoutsourced is an outsourcing company based in Pristina, Kosovo.
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IA
In Africa Connect
Consumer Products & Services · Business Services · Financial Services
In Africa Connect provides actuarial and investment consulting for funds, institutions and companies.
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Infosys BPM Limited
Supply Chain, Logistics, and Transport · Business Services · Financial Services
Infosys BPM Limited provides business process services, including business process as a service (BPaaS), for retail, CPG and logistics companies.
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Intelli Solutions S.A.
Financial Services · Legal · Also in Middle East
Digital transformation firm offering customer onboarding, debt recovery and software services for telecom and financial firms
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Top Call Center Companies for Telecommunications

Essentiel Outsourcing S.L

Impel Service & Solutions Limited (ISSL)

Digital Telecommunication Corp (DTC)

Gregory Micallef Associates

Interstate Technologies

HRC Technologies Limited (IGW)

Callboxs

Lehman Consulting and Recruiting

Direct TPV

Ec3

Daktela s.r.o.

Daktela UK

Apifonica

Voltron Operations

3S

Contact Point 360

DBL Telecom Limited

Elision Technologies Pvt. Ltd

ETISAL International

Five9

Getoutsourced

In Africa Connect

Infosys BPM Limited

Intelli Solutions S.A.

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