How do call screening devices work to stop junk faxes?
With Caller ID: The fax broadcasters Caller ID is identified and added to an “Invited” list. Once on the ‘Invited’ list their faxes are recieved unimpeded. Those callers who are not on your ‘Invited’ list, anonymous callers or callers who have blocked their Caller ID are rejected. Without Caller ID: Each device acts like a mini auto-attendant and filters unwanted faxes by requiring an additional key input. An automatic dialer would not hear the fax tone and hang up, possibly removing your number from their call list. A human telemarketer would hear your request to be placed on their “Do Not Call” list and move on to more willing prey. If you don’t have a fax machine, but receive calls from fax broadcasters, the Privacy Call PLUS would be the perfect solution.
