Telephone Caller ID

[Inquisitive]

How about a mention of the make and model here. So, we can check out units we may like to know more about.
On my cellphone I use Zoner AntiVirus. It does call blocking and antivirus work. Had it for a few years works well.

 

[AnalogKid]

Nigel's device must be masking the first ring signal so it can read the caller id before allowing any indication that a call is coming in.

ak

 

[shokjok]

It sounds like you'll need a switcher and a monitor. When one line rings, that Call Display data appears on the screen while the other line remains available. As crutschow pointed out, a black list box is best to stop those pesky callers, much like an incoming call restrictor I've seen advertised with Weeder Technologies.

 

[gary350]

Telemarketers will not talk to an answering machine. LOL. I put an answering machine on my home phone when it rings and answers if the phone goes CLICK it know it was a telemarketer. LOL. I tell family and friends to say something so I know who you are then I will answer the phone so don't hand up just hang on a few seconds give me time to answer the phone.