| 摘要 |
In a subrate-multiplexed telecommunication system that handles subchannels of different rates and hence assigns a plurality of time slots within a frame to at least some subchannels, time slots with a frame of a subsrate multiplexed channel are assigned to an individual subchannel arbitrarily, without constraint on the location within the frame of the time slots assigned to the individual subchannel. The only constraint that is observed is that, when switching the signal stream of a subchannel from one subrate-muliplexed signal stream to another, the relative time ordering of the subchannel's signals carried by the subchannel's assigned time slots in the one subrate-multiplexed signal stream is preserved when the subchannel's signals are switched into the subchannel's time slots in the other subrate multiplexed signal stream.
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