@Weaver, querying the router returns this
BusyBox v1.18.5 (2018-05-28 19:53:14 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
/ # bcm_xdslctl info --vectoring
bcm_xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 2000
Last initialization procedure status: 0
Max: Upstream rate = 35012 Kbps, Downstream rate = 203511 Kbps
Bearer: 0, Upstream rate = 34884 Kbps, Downstream rate = 205805 Kbps
Currently not in VDSL modulation --vectoring is only for VDSL mode