Outgoing calls are not working

What you can do:

1. Calls to a specific number are not possible

Call the number from another phone

Please try to call the same number with a phone that has to a different connection, for example with a mobile phone or a different landline connection.

If the problem persists, it is very likely that something is wrong with the number you are calling. However, if the error only occurs when you call the desired number from a Sunrise landline, please proceed to the next step.

Give us a call or visit the Community

There is probably a problem with the connection that needs to be investigated. Please contact our customer services or use our Community.

2. Calls not possible to any other number

Check for network disruptions

You can view service information and disruptions in real time.

Our notifications are constantly being updated. If everything is okay, please return to this page.

Check whether the LED light on the modem is continuously white

If the LED light remains white, skip step 3 and go directly to step 4.

If the LED light is not continuously white, please go to step 3.

Check the cabling on your modem

Make sure that all cables are connected correctly and that your modem is online.

Check whether your phone is correctly connected to your modem

Make sure that the landline device and modem are connected correctly.

Restart your modem and wait until it has completely restarted

Restart your modem. Turn it off by pressing the power button, wait 30 seconds and then turn it on again. Wait until the modem has completely restarted and check whether the problem has now been resolved. This can take up to 15 minutes.

Check whether your phone is visibly damaged

If your phone is damaged, check whether you need a new one. Please also make sure the battery is charged and the display is lit up.

Give us a call or visit the Community

If none of the steps above has resolved the problem, please contact our customer services or use our Community.


Are you looking for a solution? Consult other customers and experts and become part of our Sunrise Community.

Sunrise hotline

Contact us by phone.