Upstream bandwidth allocation and ranging are not required in the initialization of one way CM so the implement is simple.
对于电话回传CM，其初始化过程不需要上行带宽分配和测距过程，技术实现比较简单。
Upstream bandwidth allocation and ranging are not required in the initialization of one way CM so the implement is simple.
对于电话回传CM，其初始化过程不需要上行带宽分配和测距过程，技术实现比较简单。
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