Ever since 1959, the public "pink phone" has been installed in restaurants, apartment buildings and other public places. Now, a new larger model offers the same direct-dial intercity calling capacity as the red and blue models. With the introduction of "wide area time-based calling" on November 12, 1972, the system of calling charges is changed to calculated units of calling time. The larger "pink phone" now provides a function that accepts 10 yen every three minutes for local calls.

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