Camp-on busy signal

Camp-on busy signal

In telecommunication, the term camp-on busy signal has the following meanings:

*A signal that informs a busy telephone user that another call originator is waiting for a connection. Synonym: "call waiting"

*A teleprinter exchange facility signal that automatically causes a calling station to retry the call-receiver number after a given interval when the call-receiver teleprinter is occupied or the circuits are busy. Synonym: "speed-up tone"

Source: Federal Standard 1037C


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