| 单词 | busy tone |
| 释义 | > as lemmasbusy tone busy tone n. originally U.S. a sound indicating to a caller that a telephone line is engaged (cf. sense 2b). ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telephony > [noun] > signals or tones call signal1853 telephone call1878 tone1878 ring-off1885 busy tone1902 buzz1913 dialling tone1917 dial tone1920 ringtone1921 ringing tone1922 pip1929 pip-pip-pip1936 logatom1937 pay-tone1958 ringtone1984 1902 Electr. World & Engineer 11 Oct. 383/2 If Y is busy both relay coils receive current and the relay fails, the busy tone being supplied to X through the back contacts. 1914 W. Atkins Princ. Automatic Teleph. 27 If all the lines are engaged the wipers will rotate to this busy-tone circuit. 1978 D. Goines Crime Partners 148 He finally found the dime, dropped the coin in the box, and dialed the number... He got a busy tone. 2002 M. Talbot-Smith Audio Engineer's Ref. Bk. § 6.9 [The] busy tone is returned..when the wanted party is engaged on another call and this has given the tone its alternative name ‘engaged tone’. < as lemmas |
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