J. P. Gilliver (John) wrote:
In message , Nil
writes:
[]
they invariably hang up. If I call back the caller ID number, it's
usually not in service.
[]
Oh, you get faked CLIs in the US too, do you?

Isn't faking CLI illegal?

If it is, aren't the telco.s participating in the crime? I don't think
they can claim "common carrier" immunity; sure, any that _relay_ it
maybe can, but the ones where the call _originates_ must know it isn't
coming from the line it pretends to be. (And if they're from abroad,
then it's the one that handles the call where it enters the country.)

Caller ID wasn't invented for any purpose, except to
place a $2 a month charge on a phone bill. That
seemed to be the only objective when it was invented.

Setting up calls is handled by SS7 and this is the thing
phone companies worry about. As this is how they track
network usage for long distance. See this section
for just how bad it is.

https://en.wikipedia.org/wiki/Signalling_System_No._7

"Protocol security vulnerabilities"

"Sir Cares-A-Lot" doesn't work at the phone company :-)

The same goes for infrastructure operators, and hackable
features of the power distribution system. "Sir Cares-A-Lot"
never worked there either.

Paul