It will clearly surprise you to know that almost everything that is connected to the phone line, either at the master or an extension, has to go through a filter.
There is only one exception. The modem or modem/router itself. But conventionally it does.
Do you have a Sky box connected to the phone line?
You also need to do the check suggested a couple of posts ago - to carefully remove the faceplate if your master is an NTE5, and then see if a phone gets a dial tone at any extension in the house
. Whether that extension is ever used or not. (You don't need to use a filter at extensions while the NTE5A faceplate is not in place and the modem or modem/router is not connected to the line).
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 59546/15321kbps @ 600m. - BQM
Edited by RobertoS (Mon 16-May-16 23:51:25)