英语词汇“group busy tone”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	group busy tone
释义	group busy tone group busy tone [′grüp ¦biz·ē ‚tōn] (communications) High tone connected to the jack sleeves of an outgoing trunk group as an indication that all trunks in the group are busy.
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