| 摘要 |
<p>A device according to the invention (RC) for a time-multiplexed packet switcher (CP) comprises essentially a circuit (B10, B20 to B115, B215, and PO) for detecting the starts and ends of periods of switcher load cutting, and an interval counter (CT). The detection circuit is connected to a plurality of input buffer queues (FA0 to FA15) for the switcher and detects load cutting when all the queues signal an empty-of-packets state. A time base (BT) for the switcher is frozen at the end of an interval, established by the counter, of predetermined duration following detection of a load cutting. The said duration is determined so as to terminate a packet switching in progress. Once the time base is frozen, operation of the switcher is interrupted and its consumption becomes very low. The time base is unfrozen upon reception of a packet by the queues, and the switcher then operates anew.
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