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Help & Service for business customers

Hotlines for business customers

Whether you are new to us or have been one of our customers for some time, please do not hesitate to contact us. Whether you need technical support, sales assistance or want to report a problem, we are here for you. We are happy to help with questions about contract changes, invoices, relocations, digitisation, Telematik, SIM card activation and many other topics.

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How to reach us

Mobile communications

Arrange a callback now:
Callback service

Call now:
0800 33 02828

Calls from

More on this topic Mobile communications

Internet & landline

Arrange a callback now:
Callback service

Call now:
0800 33 01300

Calls from

More on this topic Internet & landline

New customers

Arrange a callback now:
Callback service

Call now:
0800 33 01909

To report a fault, you will find all the relevant numbers here:

Mobile phone interference

Call now:
0800 33 02828

More on the subject of faults

Internet & landline disruption

Call now:
0800 33 01300

More on the subject of faults

Fault reports for major customers

Call now:
0800 33 02870

More on the subject of faults

Fault messages DCIP & EC/EC2.0

Call now:
0800 5231323

More on the subject of faults

Interference suppression for telematics infrastructure

For the MAP bundle and service ID GEM9000xxxxx

Call now:
0800 11 83307

More on the subject of faults

Other service telephone numbers

Client service

Order a commercial house connection, change order details, track order status

Call now:
0800 33 06677

Calls from abroad:
+49 180 2 323743

More on the subject of client services

Fibre optic expansion

Full-speed fibre optic High-speed fibre optic availability check/price overview, advice and enquiries about fibre optics

Call now:
0800 33 01300

More on the topic of fibre optic expansion

Housing industry

Connection of properties to the fibre optic network, real estate companies, consulting

Call now:
0800 33 03333

More on the topic of housing

Website, online shop, web hosting, local listing

Arrange a callback for Local Listing now:
Callback service

Call now:
0800 33 01573

More on the topic of websites, online shops & local listings

Consulting and troubleshooting for telematics, internet & landline networks

Call now:
0800 33 01368

More on the topic of the healthcare industry

Interference suppression for telematics infrastructure, MAP bundle, KIM, eHBA & SMC-B

Call now:
0800 1183307

More on the topic of the healthcare industry

Connector replacement

Arrange a callback now at a time that suits you and get answers to your questions about the connector renewal replacement.

Book an appointment now

More on the topic of the healthcare industry

Further related topics

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Business customer logins

All Telekom Business logins at a glance.

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MeinMagenta App

Manage your business telecommunications contracts on the go, easily and efficiently – all in one place.

More about the MeinMagenta App

A woman types on her smartphone to report a fault.

Help with faults

Whether it's the internet, landline or mobile phone service – here you will find the right solutions to quickly resolve your issue.

More about help with faults

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