Communication Excellence

First-class telecommunications solutions from the pioneer and technology leader in VoIP and one of the first Internet Service Providers in Germany

Current News

August 22, 2025

Gigaset Relies on CNT

The leading manufacturer of DECT phones in Europe has chosen CNT Call Manager as its new telephone system and seamlessly integrated its own DECT infrastructure.

June 20, 2025

U.S. Armed Forces – Telecommunications for 75,000 Service Members

CNT supports strategic U.S. military installations in Europe by providing secure and reliable communication services.

May 8, 2025

CNT in Switzerland – Strategic Partnership with AAA

Together with AAA, CNT is strengthening its commitment to the Swiss market – building on established customer relationships and ongoing projects.

April 16, 2025

Smartphone App for iOS and Android

The CM Mobile App brings the powerful Cloud PBX and UCC features of CNT Call Manager directly to your smartphone.

CNT Call Manager

The only true Cloud PBX with all UCC services

Cloud communications for medium and large enterprises

Cloud Communications

Cloud PBX
The Flexibility of a True Telephone System
Cloud PBX
UCC
Conference, Chat, Presence – All in One
UCC
CM App
The App for Desktop and Smartphone
SIP Phones
Unlimited Selection of Devices
SIP Phones
Integrations
Seamless Connection to Proven Systems
Integrations
Applications
Solutions for All Use Cases
Applications
CNT SIP Connect
The Reliable Telephone Connection in Many Countries
CNT SIP Connect
Tariff Model
Simple, Transparent, and Flexible
Tariff Model
The Foundation
Security, Scalability, and Flexibility
The Foundation

Solutions

Network Services

Since 1995, CNT has provided internet access and site networking for medium and large enterprises with comprehensive availability throughout Germany and at many international locations.

Carrier Trunking

CNT offers high-quality SIP trunks as a carrier's carrier for telecommunications providers as a wholesale product – available in many countries worldwide.

CM Resale

CNT Call Manager is successfully marketed by system houses and integrators as their own product. Targeted adjustments to specific target groups maximize value creation.