How do I get an uninterrupted internet connection

The displayed DSL bandwidth in the 1 & 1 DSL router is too low

Your 1 & 1 DSL router indicates that the DSL bandwidth is too low? This article provides you with important information and possible solutions.

Follow these instructions step by step to find and eliminate the cause of the insufficient DSL bandwidth. After each step, test whether the wrong bandwidth is still displayed.

Disconnect your 1 & 1 DSL router from the mains and then reconnect it to the mains. Now wait 1 to 2 minutes until the 1 & 1 DSL router has completely restarted and is ready for use.
Make sure that your 1 & 1 DSL router is connected to the first telephone socket and that this telephone socket is not connected to any other telephone socket. If extension cables are plugged between the telephone socket and your 1 & 1 DSL router, remove these extensions.
Open the user interface of your 1 & 1 DSL router. To do this, enter in the address line of your browser (Mozilla Firefox, Microsoft Internet Explorer or similar) http://fritz.box a.
Alternatively, you can also use the IP address 192.168.178.1 or enter the IP address you have assigned.
If you have protected the user interface with a password, enter this now.

If you have problems, the article User interface of the 1 & 1 DSL router cannot be called up.
These instructions refer to the current firmware version. The display and menu navigation may differ slightly with older firmware versions.
Now select the menu items Internet and DSL information. Then click on the tab Interference immunity. Set all 3 selection points to the setting maximum performance and click on Take.
Change settings for interference immunity
Your 1 & 1 DSL router now disconnects the Internet connection and establishes it with the new settings. This process can take a moment. Then check whether the correct bandwidth is now being displayed by your 1 & 1 DSL router.

If the bandwidth is still too low, please give us a call so that we can check your 1 & 1 DSL connection. You can find our phone number on the contact page.


You will find more information on this topic here: