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English thesaurus
dial-back ['daɪəlbæk]
IT	Used as a control over dial-up telecommunications lines. The telecommunications link established through dial-up into the computer from a remote location is interrupted so the computer can dial back to the caller. The link is permitted only if the caller is calling from a valid phone number or telecommunications channel.

dial-back : 3 phrases in 2 subjects

Communications	1
General	2