| 摘要 |
The present invention relates to an add/drop multiplexer/demultiplexer including a matrix switch 30, the drop side of which is connected via buses 31, 32, to respective time slot assignment function circuits 33, 34, and characterized by the time slot assignment function circuits 33, 34, being interconnected by at least one bus 35 capable of transferring traffic between the add and drop functions of the multiplexer. <IMAGE>
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