Ringback music, also called personalized ringback tone, is a piece of music heard by the caller instead of the traditional telephone ring signal when a telephone call is placed.

“个性化接通回音”则是打电话时，传统的电话提示音被音乐所取代，于是成为了我们所说的“彩铃”。

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American consumers often wonder why, if they ring their telephone company and are handed from one call centre to another, they always have to repeat their contact information and describe the problem all over again.

ECONOMIST: Timely technology | The