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subscriber trunk dialling

[səb'skraɪbə'trʌŋk'daɪəlɪŋ]
commun., tech. truncdhiailiú rannpháirtí
 English thesaurus
Subscriber Trunk Dialling [səb'skraɪbə'trʌŋk'daɪəlɪŋ]
telecom., abbr. STD