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Subscriber dialing of international calls typically requires an international call prefix (international dial-out code, international direct dial code, IDD code) to be dialed before the country code. The term international subscriber dialling was used in the United Kingdom and Australia until the terminology was changed to international direct ...
Template: International numbering standards. ... Download as PDF; Printable version; ... This page was last edited on 22 November 2022, ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.
In contrast to numbering plans, which determine telephone numbers assigned to subscriber stations, dialing plans establish the customer dialing procedures, i.e., the sequence of digits or symbols to be dialed to reach a destination. It is the manner in which the numbering plan is used.
The International Telecommunication Union (ITU) publishes a recommendation entitled Notation for national and international telephone numbers, e-mail addresses and Web addresses. Recommendation E.123 specifies the format of telephone numbers assigned to telephones and similar communication endpoints in national telephone numbering plans.
6. Select your dialing options. 7. Click Next. 8. Enter your Area Code and click Next. 9. Select 2-3 AOL access phone numbers. 10. Click Next twice to confirm your choices. 11. Click Save and then Save Changes.
E.164 is an international standard (ITU-T Recommendation), titled The international public telecommunication numbering plan, that defines a numbering plan for the worldwide public switched telephone network (PSTN) and some other data networks. E.164 defines a general format for international telephone numbers.
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