Would you please describe how the bogus 911 call could happen? I’ve done a lot of work with phones of various types and that seems highly unlikely to me.
I don’t know if this is still the case, my house has a main phone box on the outside of my house in the back. You can plug a phone in there and make a call.
I heard that someone called the white house from a neighbor’s home and made threats against the President. The homeowner was investigated and put on the do not fly list. Could be an urban legend.