How many nuisance calls can the BT4600 block?
The BT4600 can block up to 1000 individual numbers. It also features Advanced Call Blocking that can block up to 100% of nuisance calls by screening incoming calls and asking unknown callers to say their name before you decide whether to accept or block them. (Page 1)
From the official BT Bt4600 manual, page 1
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