Unfortunately we had a reason at the USA2K home to call 911.
I will not get into the circumstances, but suffice to say that
emergency services were here in like 90 seconds, and we're OK.
E911 never asked or confirmed the address as far as I know, but
they came straight here (Ambulance, fire truck and police car seemed
a bit like overkill!)

KUDOS to a well run phone service. Thank you VOIPo.