[Talk-ca] Preferred phone number format

[Matthew Darwin]

Hi all,

Is there a preferred phone number format we use in Canada?

I noticed a bunch of phone numbers in Ottawa don't follow the 
recommendations in https://wiki.openstreetmap.org/wiki/Key:phone, namely:

  * phone=/number/ where the /number/ should be in international
    (ITU-T E.164 <http://en.wikipedia.org/wiki/E.164>) format
      o phone=+<country code> <area code> <local number>, following
        the ITU-T E.123 <http://en.wikipedia.org/wiki/E.123> and the
        DIN 5008 <http://en.wikipedia.org/wiki/de:DIN_5008> pattern
      o (phone=+<country code>-<area code>-<local number>, following
        the RFC 3966/NANP <http://en.wikipedia.org/wiki/NANP> pattern)

Is there a preference which of these formats is used?   Can anyone run 
a query and see which is more popular in the country?

The reason I'm asking is that since a bunch of phone numbers leave off 
the +1 (and have other errors), I want to align them to the 
recommended format.   I am wondering if I should have them in the 
format of "+1 999 555 1234" or "+1-999-555-1234".    If there is no 
existing preference adopted in OSM Canada, I will use the latter to 
cleanup the non-compliant phone numbers.

Comments?

I am also assuming we prefer "phone" over "contact:phone" as per 
https://wiki.openstreetmap.org/wiki/Key:contact

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