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Call back (also called dial back) is a
|“||procedure for identifying a remote terminal. In a "call back," the host system disconnects the caller and then dials the authorized telephone number of the remote terminal to reestablish the connection.||”|
|“||[a]n authentication technique for terminals that remotely access a computer via telephone lines; the host system disconnects the caller and then reconnects on a telephone number that was previously authorized for that terminal.||”|