soundman1957

Hi I am a newbie on this forum, but i am looking for some advice on a issue on a BT versatility system. It is on a ISDN, the issue i have is there is crosstalk on all three extensions , i have rewired each point back to mdf, and still have the same thing, tried changing the IDSN card but no change. BT has done some checks on the line and say that it ok any help would be great ,just to get this thing off my back. Tony