This diagram illustrates a typical SONET network.

此图说明了一个典型的SONET网络。

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Therefore, a SONET interface can report B2 errors only for a particular monitored segment.

因此，SONET接口可以报告，只在一个特定监测段B2的错误。

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In other words, parity bytes monitor and detect errors over different parts of a SONET frame.

换句话说，校验字节的监测和检测过的SONET帧的不同部分中的错误。

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Sonet salesmen solemnly warn new customers that they may use their new handsets only from their offices.

ECONOMIST: Russian telephones

Cut through a Sonet ring and the highly reliable optical gear just sends traffic in the other direction.

FORBES: The God Box

Metro networks have phone gear like digital cross-connects, which manage high-and low-speed traffic, and synchronous optical network (Sonet) systems, which come from fiber-optic phone networks.

FORBES: The God Box