CNT AG
CNT AG
As one of Germany's first internet service providers and a VoIP and cloud pioneer, CNT takes responsibility for reliable and secure business communications.
CNT® stands for Communication Network Technologies and combines long-term stability with technological innovation. The company draws on technology developed in-house and experience dating back to 1995. In its Cloud Communications and Network Services business areas, CNT develops and operates solutions for midsize and large businesses, carriers, and service providers.
Internet Service Provider since 1995
As early as 1995, CNT worked with IBM to provide nationwide internet access and site-to-site connectivity for business customers. Today, its Network Services business area delivers high-performance internet connectivity and enterprise networks in Germany, across Europe, and around the world.
VoIP and Cloud Pioneer
CNT has offered voice services since 2000 and VoIP since 2001, and has been developing its own Cloud Communications platform since 2008. Built on this platform, CNT Call Manager combines leading cloud PBX and UCC technology to replace established phone systems in large and international businesses without compromising functionality. As a carrier registered in many markets, CNT enables businesses to use a unified Cloud Communications platform with local phone services in 34 countries.
Years
Internet Service Provider
Years
Telecommunications
Years
Voice over IP
Countries
in Europe and worldwide
Our customers entrust us with their business-critical communications. That trust commits us to proven solutions, secure and reliable operations, and continuous innovation. This is what Communication Excellence means to us.
Two Business Areas. One Standard.
Cloud Communications and Network Services complement each other in an integrated portfolio for reliable, scalable communications. It brings together CNT's own Cloud Communications platform hosted in certified data centers in Germany, integrations with existing systems, international voice services, and high-performance internet connectivity and enterprise networks.
Commitment to Excellence
Communication Excellence defines who we are and how we work. Qualified professionals, proven solutions, the highest security standards, and rigorous quality management enable us to provide comprehensive services, from tailored consulting and professional implementation to long-term operational support.

History
1995: Internet for Businesses
As one of Germany's first internet service providers, CNT worked with IBM to deliver leased-line internet access and site-to-site connectivity for business customers throughout Germany. Just a few months later, CNT took on support for IBM AS/400 partners in southern Germany and prominent customers such as Daimler.
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 voice services
First VoIP connection to all public telephone networks via H.323 gateways
Acquisition of Crown Neue Medien GmbH in Hamburg and establishment of the Hamburg office
Deployment of a hybrid phone system as a hosted PBX at CNT's own locations
Hamburg HafenCity: Opening of the location
Jever office: Establishment of the sales location
Implementation of a hosted PBX project based on an IP PBX for more than 500 users at 20 locations
Development begins on CNT's own Cloud Communications platform
CNT Call Manager: Presentation at CeBIT 2011
Move into the new corporate headquarters in Karlsruhe
Standardized SIP trunks in many countries across Europe and in the USA
CNT Call Manager 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 video conferencing, screen sharing, and chat
CM App, the desktop app for Windows and macOS
Expansion of CNT's international carrier presence and provision of local phone services in additional countries
Local presence in Switzerland
CM Mobile App, the smartphone app for iOS and Android