If you say so. But I run these tests actually looking at the router or my handheld tester and sync doesn�t drop. Believe what you like though!
ADSL/ADSL2+ does drop sync from a copper line test but a VDSL connection over FTTC doesn�t!
The test you�re describing does give you a GEA result and a copper line test result (as you say). It�s intrustive only in the sense that dialtone would cease while the test is running, NOT VDSL sync. Zarjaz would back me up on this I�m sure.
A GEA test on its own is non-intrusive.
I'm no expert but I know there are intrusive tests the ISP can run.
All GEA Service Tests run via New KBD are set to intrusive. This allows a copper pair test to be run for the copper section of Fibre to the Cabinet (FTTC) circuits.
KBD = Knowledge Based Diagnostics
You say you�re no expert (I am though) - the copper pair test as you call it is run from the test heads inside the telephone exchange. That cannot cause the VDSL sync to drop which (as you well know) it coming from the DSLAM in the FTTC cabinet.
Edited by deleted (Mon 25-Sep-17 19:01:16)