| 摘要 |
PROBLEM TO BE SOLVED: To provide a practical system which temporarily and independently switches a network to make it usable without affecting the traffic of a trunk system network and also independently of the state of the trunk system network and improves the degree of freedom/accessibility in installation. SOLUTION: This system is provided with an access station(AS) 100 which is arranged at an upper part of a room and is also connected to an in-house LAN(local area network), one relaying device 110 having single/plural terminals 111 to perform optical transmission and reception with the AS 100 and a communication modem 120 that is provided in the terminal 111 unit and performs optical transmission and reception with the device 110 with an optical signal as a transmission medium. In the above system, a piece of the device 110 manages the addresses of the terminals 111, also has a management address table which mutually manages the addresses of the terminals 111 which are managed by some other relaying device 110, forms a radio communication path to the other device 110 using the addresses and performs communications between the terminals 111 of the other device 110 and the terminals 111 of the self-device. |
