[多项选择题] MSG9000MRB能实现的功能包括（）.
A.Tone/Voice
B.DTMF Detection/Generation
C.MFC Detection/Generation
D.ConferenceCall
正确答案：
A, B, C, D
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[多项选择题] MSG9000MRB能实现的功能包括（）.
A.Tone/Voice
B.DTMF Detection/Generation
C.MFC Detection/Generation
D.ConferenceCall
A, B, C, D
