| 摘要 |
A system for switching information packets assigned with two levels of semantic priority between entering time multiplex lines and outgoing time multiplex lines, a storage address of a packet in a buffer memory of the system being stored in a queueing file associated with each outgoing time multiplex line designated to transmit the packet, comprising a field point (state) memory whose words each are comprised of as many bits as there are outgoing time multiplex lines, the addresses of the the field point memory corresponding to those of the buffer memory, each bit of the words being at "1" when the packets stored at the same address as the words and designated for an outgoing time multiplex line corresponds to a high level semantic priority bit and has not yet been transmitted by the outgoing multiplex line concerned, each packet storage address being chosen from the addresses of the field point memory addressing all bits of which are at "0".
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