Assuming you are asking about a Microsoft Fax product, phone numbers need to
be in canonical format so that dialing rules will be processed.
http://members.shaw.ca/bsanders/FAQFAX.htm#_Toc88835137

Signature
Russ Valentine
[MVP-Outlook]
> How do I send an international fax? I have the correct number, but I do
> not
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>
> Thanks.