“All 911 lines have caller ID but if the caller blocks it they can not tell who is calling”
ikka replied:
“Sorry, you are wrong. They can —always— tell who is calling, or can find out.”
For cell phones, they can block the phone from receiving other calls and you have to enter a code to unlock it.
My 911 call went to the duty station where I got the number {but not the phone} (long way away), I requested my local 911 exchange by proper name, got the operator, and explained the problem.
And they have the number, plus the blocked phone if they decide to check phones.
Fortunately, it was just a property crime. No criminals, children, animals or liberals were harmed.
/johnny