Summarize the following:
If your broadband connection is linked up to your landline phone, check if the phone is properly connected and working. The dial tone should be normal, and without white noise. If there’s no dial tone or there’s noise on the line, there may be a problem with the phone wires, which then affects your broadband connection. Report this.

Summary:
Pick up your landline phone. Listen for a dial tone. Call customer support.