Because RPR is a layer 2 MAC-based technology, it can operate over multiple physical layers, including SONET.
由于RPR是第二层基于MAC的技术,所以它能在多个物理层上工作,包括SONET。
Importantly, each layer USES a single, interleaved parity byte to provide error monitoring across a particular segment, along the end-to-end SONET path.
更重要的是,每一层都使用一个单一的,交错的校验字节提供一个特定的市场上的错误监测以及终端到终端的SONET路径。
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