PDH传输体制的速率按群次来分,基群速率为()。 A.2.048Mbit/s B.8

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问题:

PDH传输体制的速率按群次来分,基群速率为()。

A.2.048Mbit/s

B.8.448Mbit/s

C.34.368Mbit/s

D.139.264Mbit/s

考点:传输线路维护人员考试传输线路维护人员综合练习传输线路维护人员综合练习题库
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