I’m considering building an Asterisk box at home in order to stop telemarketers. We’ve tried the “Do Not Call” registry but we still inevitably get lots of wrong numbers and other unwanted calls. What I’d like to do is have the Asterisk box field incoming calls and prompt callers for a PIN number. If the PIN number is correct then the call is allowed to ring on the house phones. If the PIN is incorrect the call is dropped. I figure we’ll only give the PIN to family members and those we want to actually speak to.
Before I get started on a project like this I’d like to know if Asterisk can actually do this. Any thoughts?