| 摘要 |
A DCME system having a circuit switching capability for use in a redundant communication system is disclosed. Alarm conditions defined in ITU-T Recommendations G.732 and G.763 are previously stored. When detecting alarm information defined in ITU-T Recommendations G.732 and G.763 from a received signal on each radio circuit, it is determined whether a failure has occurred on each radio circuit by comparing the alarm conditions with the alarm information. One of the radio circuits is selected based on the determination results.
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