In the international telephone network, the format of telephone numbers is standardized by ITU-T recommendation E.164. This code specifies that the entire number should be 15 digits or shorter, and begin with a country prefix.
https://en.wikipedia.org/wiki/Telephone_number
A telephone number serves as an address for switching telephone calls using a system of destination code routing. Telephone numbers are entered or dialed by a calling party on the originating telephone set, which transmits the sequence of digits in the process of signaling to a telephone exchange.
https://en.wikipedia.org/wiki/Telephone_number
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https://www.emirates.com/english/help/contact-emirates/
Twilio strongly encourages E.164 number formatting for all phone numbers both in the ‘to’ and ‘from’ fields. This format is the internationally-standardized format for all phone numbers, and it includes all the relevant information to route calls and SMS messages globally. E.164 numbers can have a maximum of fifteen digits and are usually written as follows: [+][country code][subscriber number including area code].
https://support.twilio.com/hc/en-us/articles/223183008-Formatting-International-Phone-Numbers
A telephone number is a sequence of digits assigned to a fixed-line telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN) or other private networks.
https://en.wikipedia.org/wiki/Telephone_number
When using Twilio to dial or send messages, you will not need to enter the international call prefix for E.164. For example, to convert a US phone number like 415 555 2671 to E.164 format, you need to add the ‘+’ prefix and the country code (which is 1) in front of the number so it will look like +14155552671.
https://support.twilio.com/hc/en-us/articles/223183008-Formatting-International-Phone-Numbers
Telephone numbers in the United Arab Emirates. Telephone numbers in the UAE follow a closed telephone numbering plan. The United Arab Emirates is assigned an international dialling code of 971 by ITU-T. Telephone numbers are fixed at seven digits, with area codes fixed at two or three digits.
https://en.wikipedia.org/wiki/Telephone_numbers_in_the_United_Arab_Emirates
Administrations are requested to use the format as explained in the ITU-T Recommendation E.129 for their numbering website, or when sending the information to ITU/TSB; e-mail: tsbtson@itu.int. Example of presentation of E.164 national numbering. Example of Number Portability (NP) Notification forms. The information provided should be in a standard format (Word Rich Text format), so that the TSB has the database without retyping or making format changes.
http://www.itu.int/oth/T0202.aspx?parent=T0202
text/html 4/5/2007 6:48:21 PM Fred Duncan 0. I am trying to consolidate and standardize the phone number information for my company and use Active Directory to publish it. The trouble is, I am having a great deal of difficulty in determining the appropriate format for the data.
https://social.technet.microsoft.com/Forums/en-US/ba126d9b-41dd-405d-aaa3-f9898e58fd55/telephone-number-format?forum=identitylifecyclemanager
To call Dubai from abroad you need to dial the international country code for United Arab Emirates which is +971 and then you dial the area code followed by the local number. Local numbers are composed of seven digits. Landline area codes are two digit numbers. The area code for Dubai is 04. When calling an area from abroad, you skip the 0 after dialling the country code. E.g., to call Dubai from abroad you dial +971 + 4 + local number. To call a local number from within UAE the 0 of the area code should be kept.
https://www.justlanded.com/english/Dubai/Dubai-Guide/Telephone-Internet/Phone-calls
uae telephone number format
The telephone number format of the United Arab Emirates is +971 plus 4 plus local number. The telephone number format of United Arab Emirates is +971 + 4 + local number.