Top Call Center Companies for Telecommunications

Between them, the 13 call center companies on this page cover business services (7), financial services (5), information technology (4) and retail (4). They also list work in Middle East, London and Beckenham. 13 of them have written a profile you can read before you get in touch.

1. 1

   

   Essentiel Outsourcing S.L

   Business Services · Medical · eCommerce

   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.

2. 2

   

   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 #2: Founded 1982, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   Gregory Micallef Associates

   Business Services · Financial Services · Cloud · 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 #3: Founded 1992, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

4. 4

   

   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 #4: Founded 1999, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

5. 5

   

   Direct TPV

   Business Services · Financial Services · Cloud

   Direct TPV provides third party verification using automated or live agent services.

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   Why #5: In business 15+ years, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

6. 6

   

   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 #6: Founded 2013, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

7. 7

   

   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 #7: ISO 27001, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

8. 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
9. –

   

   Voltron Operations

   Advertising & Marketing · Business Services · Information Technology · Also in Nottingham and Dublin

   Welcome to Voltron Operations Call Centre , where exceptional customer service meets cutting-edge technology.

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10. –

    

    3S

    Business Services · Information Technology · Retail

    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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11. –

    

    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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12. –

    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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13. –

    

    Intelli Solutions S.A.

    Financial Services · Also in Middle East

    Digital transformation firm offering customer onboarding, debt recovery and software services for telecom and financial firms

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14. –

    

    IPS

    Medical

    IPS is a business with work in telecoms, medical services and enterprise solutions, centred on the Philippines. It also offers cost-effective solutions for Japanese enterprises.

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