I have recently purchased a BT Aqua Twin landline phone set, but I am getting occasional problems with the base unit continually paging the handsetswith no input from me, sometimes it goes days with no problems, and then ( like today ) it does it every few minutes, sometimes with a long page and sometimes with short page and then cuts off. I have had problems with my land line over the last few weeks, could BT be testing the line and thus triggering the base to page?