Editing Busy signal (section)

{{Short description|Type of call-progress tone}}
{{other uses}}
{{Use American English|date=September 2024}}

{{listen
| filename     = NorthAmericanBusySignal.ogg
| title        = Example of a North American, Hong Kong, South Korean and the Philippines’ busy signal
| description  = Listen to a busy signal from North America, Hong Kong, South Korea and the Philippines.
| filename2    = Old North American busy signal.ogg
| title2       = Example of an old North American busy signal
| description2 = Listen to a busy signal from North America used prior to 1980.
| filename3    = Tonalité d' occupation France.ogg
| title3       = Example of a European, Indonesian, Macau, and Latin American busy signal
| description3 = Listen to a busy signal from Europe.
| filename4    = COMTelph_Tonalite_occupe_2_(ID_1611)_LS.wav
| title4       = Example of a French busy signal
| description4 = Listen to a busy signal from France.
| filename5    = United_KingdomAustraliaBusySignal.ogg
| title5       = Example of a United Kingdom busy signal
| description5 = Listen to a busy signal from the United Kingdom.
}}

A '''busy signal''' (or '''busy tone''' or '''engaged tone''') in [[telephony]] is an audible [[call-progress tone]] or audible [[Signaling (telecommunications)|signal]] to the [[calling party]] that indicates failure to complete the requested [[Telecommunication circuit|connection]] of that particular [[telephone call]].

The busy signal has become less common in the past few decades due to the prevalence of [[call waiting]] and [[voicemail]].