Line training as such doesn't exist on FTTC, and anything similar that does is the province of the Openreach DLM.
That runs from the minute you first connect. If your line is seriously unstable it will take serious action during the day of first connection and the end of the first full day.
If there is a highish number of errors expect it to do the normal sort of intervention some time tonight, such as turning interleaving or G.INP on.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
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