It's just a test on the handheld tester. It connects to the ADSL for 4 minutes and checks for PPP session, sync speed and CRC, FEC issues etc. This then gets submitted when the job is closed down. It's mandatory and is one of the tests that the engineers are marked and graded on for SFI jobs.
There's also a completely different type of job where the engineer goes to the house, checks line meets SIN349, upgrades the socket if required and then listens for noise on the line. That's a different job type and isn't an SFI task. The CP can order whichever is appropriate, I assume.
Edited by Icaras (Tue 17-Jan-17 11:55:48)