Hi again Lou,
In order to eliminate your house wiring the next thing to try is, firstly turn the modem off by switching off the modem power supply, then remove the faceplate of the v10, plug a filter, modem and a telephone into the test socket inside. Now power the modem up and check the line stats again. Now try a quiet line test by dialing 17070 and selecting option 2 and check for total silence. Check the line stats again. Now do a ring-back test 17070 option 1 and yet again record the modem stats.
Report back here with all the results and observations.
Kind regards,
Walter