Why was 911 decided to be the shorthand dial for emergency numbers? Why not other combinations that are easier to remember (e.g. 111, 123, etc.)?

Question

Why was 911 decided to be the shorthand dial for emergency numbers? Why not other combinations that are easier to remember (e.g. 111, 123, etc.)?

In: Other

Answer 1

Goal’s easy to remember, hard to dial accidentally.

There is also a technical element that certain patterns of pulses can be generated by the wires flexing in the wind i think 222 was rejected in the UK for this reason but would have to look up which