| 摘要 |
An improved duplex time division multiplexed (TDM) communication system is provided while conserving spectrum and efficiency. To accommodate two voice signals on one channel, the time allocated in a channel for brief listener voice acknowledgements is short; the time allocated for taker transmission is long. Moreover, the coding rate for the listener is slower than for the taker. The slot allocation can be switched whereby whoever is the dominant taker will maintain the longer slot.
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