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单词 ringback tone
释义

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ringback tone
2. In full ringback tone, ringback signal. A sound played to a user to indicate that a telephone which has been called is currently ringing.
ΚΠ
1917 U.S. Patent 1,233,887 8/1 Whenever the ringing relay 340 is actuated, it connects a suitable ‘ring-back’ signal to the calling subscriber, notifying him that the party he called for is being rung.
1950 Winona (Minnesota) Republican-Herald 11 Oct. 3/6 The ringing, busy and ring back tones in the Winona Telephone Exchange are to be changed.
1972 Sci. Amer. Sept. 120/1 When the path is found, the signal-distributor sends electrical signals to ring the telephone of the called subscriber and sends ringback tones to the caller.
2004 Daily News (N.Y.) (Nexis) 7 Dec. Get ready for ringbacks. This newest audio fix for cell phone users is a snippet of a song meant to replace those boring standard rings callers hear after they punch in a number.
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更新时间:2025/1/5 18:51:53