This is what you want. I have had
mine for two months on my VOIP
and have not received a robocall
or call from anyone I did want.
My home is quiet and tranquil.
The unit does not use blacklists,
but it can if you wish. There is no
memory store that gradually fills up
with numbers to be ignored. It
is impervious to spoofing. It can
use whitelist, but doesn't have to.
Unless you have blaciklisted a number,
tlhe caller hears a message from you
to press the number zero, which will
put them through. Most robocallers
are computers that respond to your
voice, but have no idea what you
are saying and will, as a result, not
press zero.
You phone does not even ring,
but disconnects from the robocaller.
It's been perfect so far.