[SIPForum-discussion] Question About E. 164 number format definition

[今晚打老虎]

Hi all,

    I'm working on a project which needs me to check if a string is in E.
164 number format.
    I googled but unfortunately didn't find its exact definition.
    Could anyone do me a favor?
    Where can I find the exact format definition of "E. 164" number?

    Thanks in advance.

Best regards.

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