I have Caller ID on my land-line phone, and it will display the caller, if they allow it. And that is the problem. I get too many unindentified calls, (allthough I am on the Do-Not-Call list) and I like to dump them ASAP.
Here is were a Caller ID processor would become handy, it would be able to screen the call and hang up on any one who would meet a certain creteria. Or, on the other hand, could alert me to calls that are important to me.
I understand that the Caller ID info is transmitted in a serial fashion in between ringing signals, but before I go and investigate it, I like to see if somebody else has done the work allready. No sense re-inventing the wheel!