On Apr 3, 3:46*pm, wrote:

Nobody seems to have mentioned New Zeeland, where the 0 is in the same
place, but the other digits run clockwise round the dial, so the 5 is
also in the same place, but all of the other digits are different.
The mechanism is the same as on a normal dial, so that dialing a digit
n generates 10-n pulses.

The above was one of the challenges when international direct distance
dialing was introduced.

Would it be correct to say that when DTMF (Touch Tone) came out
everyone used the same frequencies world wide?