FINAL suepr merge step : added all modules to this super repos
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sites/all/modules/contrib/form/phone/README.int.txt
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sites/all/modules/contrib/form/phone/README.int.txt
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About the International Phone Number format
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===========================================
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These rules have been formulated off of the E.123 (for display) and
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E.164 (for input) specifications published by the ITU. In order to
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prevent ambiguity, we have chosen to restrict some of the stipulations
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these specifications give.
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In summary, country calling codes are assigned by the ITU Telecommunication
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Standardization Sector in E.164. We take an international phone number to
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have the form +XX YYYYYYY where XX is the country code, and YYYYYYY to be
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the subscriber's number, possibly with intervening spaces. The maximum
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length for these phone numbers is 15.
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Reference materials can be found here:
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- http://www.itu.int/rec/T-REC-E.123/en
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- http://www.itu.int/rec/T-REC-E.164/en
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Modifications to E.123
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----------------------
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7.1: The international prefix symbol "+" MUST prefix international
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phone numbers. All numbers missing this symbol will be assumed to be in
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the default country code.
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When reformatting numbers to a standard format, the following conventions
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will be taken:
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7.2: Parentheses will be normalized to spaces.
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We do not support the multiple phone numbers as described by (7.4); users
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can always specify that multiple values are allowed if this is desired.
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The functionality specified by 7.5, 7.6 and 8 IS NOT implemented.
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9.2 specifies that spacing SHALL OCCUR between the country code, the trunk
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code and the subscriber number. As trunk codes are omitted by convention,
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this means the only guaranteed separation will be between the country code
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and subscriber number. Our implementation MAY treat hyphens, spaces and
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parentheses as advisory indicators as to where spaces should be placed.
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However, +1 7329060489 will stay as it was specified, while +1 (732) 906-0489
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will be normalized to +1 732 906 0489. As a future feature, rules may
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be implemented for country codes specifying these conventions, however,
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I have deemed such functionality out of scope for now.
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The Drupal task specifies that we should validate country codes, however,
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due to the highly volatile nature of these codes, the author does not
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believe that it is a good idea to maintain a list of valid country codes.
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Thus, we only validate that the country code is three or less digits.
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Modifications to E.164
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----------------------
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Our processing for NDD's will be similarly constrained. As per
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7.3.2, we will treat 0 as a valid trunk code for all countries.
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Other digits may be specified if the fall in the form of (X), where X is
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a single digit that is 7 or 8.
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Postscript
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----------
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Modifications to our implementation will occur as necessary by user bug
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reports.
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