What is the maximum length of any phone number according to ITU recommendation E.164?

The correct answer is C. 15. According to the ITU-T Recommendation E.164, the maximum length of an international phone number is 15 digits. This length includes: - Country Code (1 to 3 digits): Identifies the country or region. - National Significant Number (NSN): The remaining digits within the country…

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According to the ITU-T Recommendation E.164, the maximum length of an international phone number is 15 digits. This length includes: - Country Code (1 to 3 digits): Identifies the country or region. - National Significant Number (NSN): The remaining digits within the country. - No Separators: The number consists only of digits and does not include spaces, dashes, or special characters. Example of an E.164 Number: A phone number in E.164 format: +14155552671: - + indicates it is an international number. - 1 is the country code for the USA. - 4155552671 is the National Significant Number.

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#E.164#Numbering Plan#Telephony Standards#Max Length

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