M MOSA 4600 Plus 产品规格 Page 8 群组振铃 (Group Ringing) MOSA 4600 Plus 内建四组振铃群组，特定的分机端口可以群组起来，给予一代表号。
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Selective group ringing tones 选择组铃声
Each student or group has 3-5 minutes to cover their topic. The host will remind the participants with the ringing bell at the last minute.
每人或每组限时于3-5分钟内演说，时间到最后一分钟，主持人会以铃声提示参赛者。
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King of Prussia is a 5-piece group that dispenses twee-pop with sweet harmonies, ringing guitars and infectious melodies.
NPR: King of Prussia: 'Misadventures of the Campaign Kids'
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