These phone number formats come from the ITU's standards -- E.164 to be specific. You can read up on it here:
http://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-E.164
Dan
bill@daze.net wrote:
>>There appears to be a problem in that only US/Canada formatted telephone
>>numbers are accepted, and some sort of additional check (valid areacode,
>>etc.) might also be done.
>>
>
>It's not a US/Canada format but instead some weird format that these two
>registries decided to require. The format confuses many users with the
>end result being an invalid phone number written to these two registries.
>
>There was a lot of discussion about the format on the discuss or dev lists
>back around September or October 2001.
>
>
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