Thanks for explaining. I don't notice any upstream crcs with outgoing phone calls. Maybe this is because Upstream data is sent from the EU instead of receive.
It's a minor line fault, As there should be no interaction going on between data And PSTN services My VDSL line started doing this but i see around 20 error seconds whilst the phone is ringing , it is in part to do with the increase in voltage that occurs only whilst ringing,
Edited by tommy45 (Wed 05-Apr-17 14:38:43)