mesgul sinyali

listen to the pronunciation of mesgul sinyali
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busy tone
A single tone that is interrupted at 60 ipm (impulses per minute) rate to indicate that the call's terminating location is already in use
A single tone that is repeated at a 60 impulse per minute (ipm) rate to indicate that a call's terminating location is already in use
  Synonym busy signal
The Busy Tone is an industry-standard tone of 60 interruptions per minute (ipm) that is used to alert the calling party of a station-busy status
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