Cheapest Landline Telephone How Do I Get A Philips Dect 5252s/05 Telephone To Work On Virgin Media Landline?

How do I get a Philips Dect 5252s/05 telephone to work on virgin media landline? - cheapest landline telephone

The line is thin and "normal functioning" cheap cell phones, but not my Philips digital receiver. I saw reference to a better DSL filter / splitter, but that means nothing to me.