The North American 10-digit fax numbers should be in the format of ###-###-#### (separated by hyphens). Other conventions should use the common local standard. International numbers should be...6/17/2021
DefinitionThe North American 10-digit fax numbers should be in the format of ###-###-#### (separated by hyphens). Other conventions should use the common local standard. International numbers should be preceded by a plus symbol.
