Gives you control over the calls you receive
Zap any nuisance caller who disturbs you
Not as cheap as 3 months ago, but still reduced. Posted to give the current price.
Can pay for itself in a year or so, your landline provider charges for the service, although check if your phone can do this for you before you buy. My Panasonic cordless will block up to 30 numbers.
Here's the blurb:
Rejects unwelcome callers
Removes you from telemarketing lists
Works on all home phone lines even those with broadband
Integrated answering machine
Works co-operatively with your 1571 voicemail system
Personalise your announcements