| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the effective utilization of communication network from being disturbed by the transfer of multi-address packet by providing a memory, which can be commonly referred to by all incoming side users, inside a packet exchange node so as not to transfer the multi-address packet to all incoming side communication terminals but to refer to the multi-address packet by all the incoming side users. SOLUTION: An incoming side packet exchange node 41 is provided with a shared memory 9 common for communication terminals 21-1 to 21-m, router 3 and CPU 8 as a means for reading an identifier added to the multi-address packet addressed to the communication terminals 21-1 to 21-m, extracting the multi-address packet and storing it in the shared memory 9. When the received packet is the multi-address packet, the CPU 8 transfers and stores packet information into the shared memory 9 and according to a reading instruction from a communication terminal 1-i (i: 1 to m), this information is transferred to the communication terminal 1-i. Thus, the communication network can be effectively utilized without lowering the quality of services for users.</p> |
