MULTIPLE GATEWAY DEVICE, MULTIPLE LINE COMMUNICATION SYSTEM, MULTIPLE LINE COMMUNICATION METHOD AND PROGRAM

摘要

A multichannel gateway (1a) is provided such that a line manager (11) detects the lines status and updates line information in a memory (12). A packet acquirer (13) acquires a packet for transmission from a terminal, and a segmentation necessity determiner (14) calculates a packet sizes (segment sizes) based on the line information so that if the packet is segmented and transmitted to each line, the transmission time will be the same. When the segmentation necessity determiner (14) determines based on the segment sizes that segmentation of the packet is necessary, a packet divider (15) segments the packet into the segments, attaches a header and generates transmission packets. A packet transmitter (16) transmits the transmission packets by way of the corresponding lines to other terminals. A packet combiner (18) removes the headers from the transmission packets received by a packet receiver (17) and combines the packets in the received order.