| 摘要 |
PURPOSE:To effectively utilize a radio channel by composing the cordless telephone device of a main device and plural decentralized base stations each having one radio part. CONSTITUTION:The radio parts that the main device A has are decentralized, one by one, and constituted as one base station B; and plural base stations B are connected to one system, the main device A is provided with a terminal board, etc., and the main device A and base stations B are connected by a bus line. The control part of the base station B1 is connected by radio to a mobile station D1 in the same system through a radio control part and enters a speaking state through a channel part. Similarly, a mobile station D2 is connected to the base station B2 by radio to enter a speaking state. Further, the main device A has construction wiring connection relation such as a intercom slave equipment C, and consequently the respective base stations B1-BN can be installed in ideal installation places, so connections can be made without any radio error, etc. Further, the respective radio stations B1-BN can physically be separated, so transmission IM can be considered and even when an isolator is abolished, radio channels are effectively usable. |
