International direct dialing
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International direct dialing (IDD) or international subscriber dialling (ISD) is placing an
Calls are initiated by dialing the
When phone numbers are published for international use, the international call prefix is omitted, and the number should start with a plus sign (+) followed by the country calling code. The plus sign indicates that the country code follows and that an access code may have to be dialed in the originating country.
The first transatlantic direct dial telephone call was made by Sally Reed in
A fictitious number in Sydney, Australia is (02) 3456 7890. It is published in the form +61 2 3456 7890 for international use. In the countries participating in the