CNT AG

CNT AG

As the oldest Internet Service Provider in Germany, CNT introduced the first true Cloud PBX for large enterprises.

CNT® stands for Communication Network Technologies and, like few other companies in Germany, represents extensive experience, high expertise, and consistent continuity in Internet and telecommunications. CNT continually sets standards and develops innovations that are second to none.

Internet Service Provider since 1995

CNT is one of the most renowned Internet Service Providers, providing Internet access and site networking for medium and large enterprises in Germany, Europe, and worldwide. Today, CNT is the oldest ISP in Germany, having offered its Network Services nationwide since 1995.

VoIP Pioneer

As early as 2001, CNT replaced traditional telephone lines with the then-new Voice-over-IP technology, before the SIP standard was established. Since 2008, CNT has relied on its own Cloud PBX (virtual telephone system) and is pioneering the future of cloud solutions.

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Years


Internet Service Provider

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Years


Telecommunications

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Years


Voice over IP

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Countries

in Europe and worldwide

Communication Excellence combines for us ambition and passion. With pioneering spirit and experience, we strive daily to elevate communication to a new level. Our enthusiasm drives us to continually set new standards.

Christian RenzeBoard Member and Founder

New Paths in Telecommunications

Innovative telecommunications solutions create perspectives and concepts that meet business objectives and open up new strategic and operational opportunities.

Commitment to Excellence

Excellence shapes our self-understanding in every respect – from individual consulting to tailored offers to the reliable and timely implementation of all services. The foundation for this is formed by highly qualified employees, mature products, and a consistent quality management.

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History

1995: The Beginning of Commercial Internet Use

At a time when the commercial use of the internet was still in its infancy, CNT, in collaboration with IBM, provided internet access via leased lines and site networking for business customers across Germany. Just a few months later, CNT took over the support of IBM AS/400 partners in Southern Germany as well as renowned clients like Daimler – a true pioneer in this field.

  • Foundation of CNT Kommunikationssysteme GmbH in Wörth am Rhein

    Nationwide internet access in collaboration with IBM, innovative hosting services, global domain registrations

  • Support for IBM AS/400 partners in Southern Germany

    Supplier for regionally active internet service providers

  • Relocation to Karlsruhe

    Transformation into CNT Systeme und Netze AG (later rebranded to CNT AG)

  • Acquisition of the data center in Frankfurt am Main

    Introduction of telecommunications services

  • First VoIP connection using H.323 gateways to all public telephone networks

    Acquisition of Crown Neue Medien GmbH in Hamburg and establishment of the Hamburg office

  • Hybrid PBX as Hosted PBX: Experiences with deployment at own locations

    Hamburg HafenCity: Opening of the location

  • Jever office: Establishment of the sales location

  • Largest known hosted PBX project based on an IP PBX (more than 500 users and 20 locations)

    Start of development for the custom-built cloud PBX

  • CNT Call Manager: Presentation at CeBIT 2011

  • New headquarters in Karlsruhe, occupancy after 18 months of construction

  • Standardized SIP trunks in many countries across Europe and in the USA

  • Cloud PBX is "feature-complete"

  • Resale partner program for CNT Call Manager

    Technical operation of the Corona vaccination hotline for two federal states

  • Expansion of CNT Call Manager to include all UCC services: Video conferencing with screen sharing and chat

  • CM App, the desktop app for Windows and macOS

  • International coverage as a carrier in many more countries across Europe and worldwide

  • CM Mobile App, the smartphone app for iOS and Android