Future-proof communication
Benefit from modern IP telephony and flexible solutions.
The advantages of our guide articles at a glance
Greater stability & security
With a fixed IP address, fail-safe protection and cloud-based systems for maximum security
Work flexibly & independently of location
Communication solutions that grow with your business.
Understanding digital telephony for your business
Voice over IP
Discover the advantages of VoIP for your business – flexible, efficient and future-proof communication with IP telephony. Find out more now.
How can the Internet be used for making phone calls?
Discover how Voice over IP can make your business communications more flexible and future-proof. Find out more now and secure the benefits.
Overview of telephone numbers and telephone systems
What type of telephone number is best suited to my business?
Discover how choosing the right type of telephone number can optimise your business accessibility in the long term.
Which technology is right for my company's telephone system?
Discover how modern telephone systems can improve your business communications.
Successful communication with telephony and the cloud
What does landline telephony have to do with the cloud?
Combine traditional landline telephony with modern cloud solutions to create the basis for flexible, location-independent communication in your company.
Handelsblatt Media Group relies on T Business
With T Business and Operator Connect, Handelsblatt Media Group connects its teams flexibly and ensures smooth communication for flexible working.
Operator Connect: The fastest way to Teams telephony
Get started with your telephony and use Operator Connect from Deutsche Telekom to directly integrate your landline and mobile numbers into Microsoft Teams.
The right tariff for the best business connection
How can I protect my company from cyber attacks from the internet?
Now more than ever, small businesses are under threat from cyber attacks and phishing. The good news is that there is a simple and effective way to protect your business: Security OnNet Basic – automatic protection directly from the network.
What role does the IP address play in my business success?
The IP address is something like a company address in the digital world. This makes it indispensable in business today.
Which internet tariff is best suited to my company?
The world of work is becoming more complex and business processes are changing. Companies want a flexible business tariff with sensible flat rates that grows with them.
Speed check DSL & Telekom availability
Use the availability speed check to quickly and easily check what Internet speed is available at your company location.
How can I protect my business from power outages?
With Deutsche Telekom's failure protection, you can safeguard your business processes and ensure a reliable internet connection.
Impetus for your success
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