The humble phone line is primarily an internet line, and now more than ever does the quality of the cable matter.
The humble telephone line has had an identity crisis. Less and less is it the main source of communication as mobile, text and email render it to its new career as ADSL line.
Upgrade your line cable
Cat5e and Cat6 cables are far more appropriate to protect the information streaming into your home at ever increasing speeds and quantities.
Central ADSL filtering will assist in reducing interference into your modem from telephone signals.