| 摘要 |
PURPOSE:To secure a packet from a low level terminal equipment to be sent with a prescribed quantity at all times by applying transmission processing of the preset number of low level packets continuously when the preset number of high level packets are subjected to transmission processing continuously. CONSTITUTION:A transmission processing section 14 sends a packet of a transmission waiting queue 131 with priority and in the case of consecutive transmission, a counter 143 is incremented every time one packet is subjected to transmission processing and the counted value is compared with a high level consecutive transmission regulated value in a holding means 141 corresponding to packets during transmission at present and when they are coincident or the transmission queue is absent, the packet in a low level transmission waiting queue 132 is started. In the case of low level transmission processing, a counter 143 i incremented similarly at every packet transmission and the counted value and a low level consecutive transmission regulated value in a holding means 142 are compared, and when they are coincident, the transmission processing of the low level packet is terminated to apply the transmission processing of the packet of the high level transmission waiting queue 131.
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