Why I’m Nostalgic for Landlines
nytimes.com
nytimes.com
Took another 20 years to hit. Thats all.
Could be embarassing though, when the other party supressed CLIP and gotcha! :-)
But is that any different today, regardless of 'line-tech'? You can either do that whitelist thing, and deny any other calls, or do blacklisting only in combination with supressing unidentified callers.
Another thing was that most people didn't even know that these options existed at all, and/or their phones didn't have the capability.
Some former national telcos were also slow in offering, and/or charged more money for that. While the upstarts just did it.
IIRC handsets from Panasonic did it all and were most affordable (at the times).
Why bother? Nobody calling, useless in a power outage, Emergency call location, ok there's that, but I am dialling on my mobile if I fall anyway... Yea.. Nah. Over it.