@Tobago131
Do you mean your Sky Talk landline phone as opposed to Talk Talk who are a rival company to Sky ?
IF so try going through this as it should test your phone line as well as the broadband:
https://www.sky.com/help/articles/broadband-diagnostic-start
You can also run the test via the MySky app on a mobile data connection.
After this has finished and if it reports back all is good click on broadband to run an updated test. If you get amber or red please follow the on screen instructions
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