International Direct Dialing

International direct dialing (IDD) or international subscriber dialing (ISD) is the process of an international telephone call being placed by the caller (the subscriber) rather than by an operator. The term international subscriber dialing was used in the United Kingdom and Australia until the terminology was changed to international direct dialing. Since the late 20th century, most international calls are dialed directly.

Calls are made by dialing the international call prefix for the country one is in, followed by the country calling code for the country one wishes to call, followed by the phone number within that country. When phone numbers are published for use abroad they typically include the country calling code, but replace the international call prefix with "+" to signify that the caller should use the prefix appropriate for their country. For mobile phones, the plus sign (+) can be used instead of the prefix.

Famous quotes containing the words direct and/or dialing:

    You see how this House of Commons has begun to verify all the ill prophecies that were made of it—low, vulgar, meddling with everything, assuming universal competency, and flattering every base passion—and sneering at everything noble refined and truly national. The direct tyranny will come on by and by, after it shall have gratified the multitude with the spoil and ruin of the old institutions of the land.
    Samuel Taylor Coleridge (1772–1834)

    Although I will inherit darkness
    I will keep dialing left to right.
    I will struggle like a surgeon.
    I will call quickly for the glare of the moon.
    I will even dial milk.
    Anne Sexton (1928–1974)