I did use a cheap corded phone plugged into the test socket and the result is as I posted. My regular phone is a cordless type and does like you say add a bit of noise. Now and then the back ground noise (or the hiss) gets loud, not something that happens everytime. It is far less noticable on the corded phone in the test socket, but it is there. Should I run the test again to see if it is repeatable?In reply to a post by andyboygsi:if you have a cheap corded phone stick that in and do the testing again. it should be pretty much silent.
I'm in an older house and from the NTE5 the wire goes staight outside (through the wall), up the wall, along the edge of the roof just under the gutter and across to the pole. There are about 25 wires going to the pole and the one from my house looks like it is pulled rather tight, most of the others are slack and wave about in the wind. Not sure if that helps.