On 4 Jan 2006 05:50:23 -0800, Mark Carver wrote:

I have ADSL filters on all the used sockets, of course.

This is not "best practice". Far better to split the voice and ADSL
signals at the first opportunity and route separate cables for each as
required. The existing telephone extension wiring for phones, a new
cable for the unfiltered ADSL to your modem/router.

Legally yes, and yes there's about 50 volts DC across the line
(changes to 75V 18Hz when ringing ISTR)

From BT anything from 40v to 100v AC RMS at 25Hz (+1Hz -5Hz).

--
Cheers
Dave. pam is missing e-mail