1. A packet communication control apparatus which transmits a packet, in which a data string of a predetermined length is
stored, to a terminal via a communication line, and takes in a signal when the signal is received from other terminals, the
apparatus comprising:
a priority packet interleaving circuit which packetizes a signal requiring a more urgent transmission than that of said packet
and interleaves the packetized signal in said packet as said packet is transmitted to the outside and said signal is input
thereto, wherein said packet has a single start-of-packet delimiter and a single end-of-packet delimiter.
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