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to phrases
dial tone ['daɪ(ə)ltəun]
commun. sinal de linha livre
comp., MS sinal de linha (A sound emitted by the receiver of a telephone that indicates that a number can be dialed)
telecom. tonalidade de convite para marcar
 English thesaurus
Dial Tone ['daɪ(ə)ltəun]
telecom., abbr. DT
dial tone: 11 phrases in 5 subjects
Communications2
Electronics1
Information technology5
Telecommunications2
Telephony1