差不多应该是：
Sorry, the number you called is busy now.
Sorry, the number you dialed is busy.
Sorry，the number you dialled is busy,please wait
各个城市的提示音可能不一样，合肥的提示音是：
Sorry,the number you dialed is busy now, Please redial later.
Sorry，the number you dialled is busy now,please hold on
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