[VoiceOps] False 911 calls and old abandoned DID

Mike Johnston mjohnston at wiktel.com
Thu Jan 21 19:25:56 EST 2021

On 2021-01-21 17:42, Pete Mundy wrote:
> on the PoTS equipment I'm familiar with (others can chime in and 
> correct me if I'm wrong on a larger scale) the numbers are reversed

According to Wikipedia 

> In most switching systems one pulse is used for the digit 1, two 
> pulses for 2, and so on, with ten pulses for the digit 0; this makes 
> the code unary, excepting the digit 0. Exceptions to this are: Sweden 
> (example dial), with one pulse for 0, two pulses for 1, and so on; 
> *_and New Zealand with ten pulses for 0, nine pulses for 1, etc_*. 
> Oslo, the capital city of Norway, used the New Zealand system, but the 
> rest of the country did not. Systems that used this encoding of the 
> ten digits in a sequence of up to ten pulses, are known as decadic 
> dialing systems. 

So you're in New Zealand :)

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