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CNT AG - Communication Excellence

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CNT AG - Communication ExcellenceCallbackContact / Callback AppointmentOpen mobile menuCommunication ExcellenceCloud CommunicationsCNT Call ManagerThe only true Cloud PBX with all UCC services

Explore CNT Call ManagerCloseCloud CommunicationsCNT Call ManagerCloud PBX9CloseCloud PBXClassic PBX FunctionsOperator ConsoleAutomated Call DistributionInteractive Voice ResponseVoice MailFaxHot DeskingDECT InfrastructureVideo Conferencing Room SystemsUCC3CloseUCCConferenceChatPresenceCM AppSIP Phones5CloseSIP PhonesCNT D865CNT D862CNT D812CNT D8CCNT Desk Series ComparisonIntegrations4CloseIntegrationsIntegration of External SystemsAddress BooksMicrosoft TeamsOpenIDSpecific Applications8CloseSpecific ApplicationsAI-Powered HotlinesContact Center and StatisticsAudio Studio ProductionsCall RecordingImmediate CallbackMulti-Factor AuthenticationAdministration and ManagementAlarm ServerCNT SIP ConnectPricing ModelThe Foundation3CloseThe FoundationSafetyScalabilityFlexibilitySolutionsTailored SolutionsA reliable foundation for customers, system houses, integrators, and carriers

Overview of SolutionsCloseSolutionsTailored SolutionsNetwork ServicesCM ResaleCarrier TrunkingCompanyCNT AGA pioneer of Germany’s internet industry and early leader in VoIP communication

Profile and HistoryCloseCompanyCNT AGManagementService CenterProject ManagementAcademyStrategic PartnersCareerLocationsReferencesNewsroomDEENCallbackContact / Callback AppointmentCloseCloud Communications9Solutions3Company7ReferencesNewsroomContactImprintData ProtectionCookiesComplianceT&CsDEENCommunication ExcellenceFirst-class telecommunications solutions from the pioneer and technology leader in VoIP and one of the first Internet Service Providers in Germany

Current NewsFebruary 2, 2026CNT Now on cnt.com

cnt.com is the digital home of our brand – clear, global, and unmistakable.

Read moreOctober 13, 2025U.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.​

Read moreAugust 22, 2025Gigaset 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.​

Read moreMay 8, 2025CNT 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.

Read moreCloud CommunicationsCNT Call Manager

The only true Cloud PBX with all UCC services

Cloud communications for medium and large enterprises

Cloud CommunicationsCloud PBX

The Flexibility of a True Telephone System

Cloud PBXUCC

Conference, Chat, Presence – All in One

UCCCM App

The App for Desktop and Smartphone

SIP Phones

Unlimited Selection of Devices

SIP PhonesIntegrations

Seamless Connection to Proven Systems

IntegrationsApplications

Solutions for All Use Cases

ApplicationsCNT SIP Connect

The Reliable Telephone Connection in Many Countries

CNT SIP ConnectTariff Model

Simple, Transparent, and Flexible

Tariff ModelThe Foundation

Security, Scalability, and Flexibility

The FoundationSolutionsNetwork 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.

Read moreCarrier Trunking

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

Read moreCM 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.

Read moreReferencesCNT AGLudwig-Erhard-Allee 20
76131 Karlsruhe
Germany

+49 721 669-0
info@cnt.com

Route PlanningLinkedInContact and CallbackIf you have questions about our offerings, we are happy to advise you personally.

Contact and CallbackCNT Service CenterWe are always available for our customers.

CNT Service CenterImprintData ProtectionCookiesComplianceTerms and ConditionsLinkedInScroll to top

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