Chapter 5. Diagnostics
180
Channel Bank: Bypass
In channel bank bypass mode, the PCM span B input path to LIU B is broken, and replaced with
the output from LIU A. From the output of LIU B, an Alarm Indication Signal (AIS) is sent to the
output of span A. The bypass operation is represented in Figure 5-8.
Figure 5-8. Channel Bank: Bypass Operation
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