CNT

Cloud PBX & Unified Communications

• CNT Call Manager: A true cloud PBX unifying voice, video, chat, and presence for enterprises.
• CM App: Extends the phone system to desktop and smartphone for full mobile reachability.
• UCC Services: Brings conferencing, chat, and presence together in one integrated platform.
• CM Teams Connect: Turns Microsoft Teams into a fully integrated softphone within CNT Call Manager.
• CM IVR & ACD: Automates call routing and queue management to streamline customer interactions.

SIP Trunking & Connectivity

• CNT SIP Connect: Delivers reliable VoIP telephony across Germany and numerous international regions.
• International Trunks: Connects multi-country locations through a single, flexible trunk per country.
• Carrier Trunking: Wholesale SIP trunks for telecommunications providers available in many countries worldwide.

Network Services

• Internet Access & Site Networking: Nationwide and international connectivity for medium and large enterprises since 1995.

Resale & Integration Solutions

• CM Resale: Lets system houses and integrators market CNT Call Manager as their own branded product.
• CM API Access: Connects CNT Call Manager to CRM, ERP, and business systems for real-time data during calls.

CNT makes enterprise communication reliable, scalable, and genuinely cloud-native, for organizations that cannot afford to compromise on voice quality or uptime. Founded in 1995 and headquartered in Karlsruhe, Germany, CNT is one of the country's oldest internet service providers and a pioneer in VoIP, having introduced its first Voice-over-IP connection in 2001.

CNT developed its own cloud PBX from the ground up starting in 2008, culminating in the CNT Call Manager, a platform built specifically for medium and large enterprises. Today, CNT operates across 34 countries in Europe and worldwide, supporting customers ranging from technology manufacturers like Gigaset to U.S. military installations in Europe.

CNT's services span cloud communications, internet access, site networking, and wholesale SIP trunking, with a local presence in Switzerland established in 2025.