| 摘要 |
PROBLEM TO BE SOLVED: To constitute a system which enables communication at another place within a system composed of plural PBX's. SOLUTION: A mobile ratio telephone office (RT-112) is registered in a PBX-100 through a radio connection controller (RC-110) in its area. For example, the RT-112 moves to enter the area of an RC-310. In this case, the RT-112 answers by necessary data to a position registration request that the RC-310 repeatedly sends. A PBX-300 analyzes the input data from the RC-310 to find that the RT-112 is already registered in the PBX-100 in the same system and reports that to the PBX-100. The PBX-100 when receiving a signal addressed to the RT-112 is able to transfer it to its location. When an answer from a visitor is received, that can newly be registered. |
