Call Blocking with UBOSS and TP Link V230v

[Simon]

I've just been having correspondence with IDNet regarding spam call blocking with UBOSS.  The advice given is that they would have to do this on the UBOSS 'platform', ie, if I wanted a number blocked I would have to email them to request this. 

However, in the router settings there are clear instructions as to configuring call blocking on an individual number basis:

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IDNet have confirmed that the router is not locked and fully user configurable, so I would have thought I'd be able to configure call blocking myself.

Has anyone used this feature successfully?  It's fairly essential for me to have some certainty of this before switching to VoIP, as I currently have a CPR Call Blocker, which works inline with, and is also powered by, the PSTN line, and I've got about 60 numbers of spam callers I'd want to transfer to the block list in the router.