| 摘要 |
PURPOSE:To decrease the number of base units to the necessary number of extensions by radio communicating wireless telephone set base units connected to a private branch exchange to wireless telephone set portable units in multi- channel access system, and providing a central processing unit as a common equipment for the groups of the base units. CONSTITUTION:When the number of necessary extensions that use wireless telephone sets, i.e., the number of the portable units, is (m), m-piece of the portable units 30-j (j=1,2...m) from #1 to #m are used. But in stationary unit part SS that includes the PBX unit 10, only n-piece of the base units 20-i are provided where (n) is a smaller number that (m). Therefore, respective base units 20-i and respective portable units 30-j are not in a conventional one-to-one relation, but are connected with each other by radio in the multi-channel access (MCA) system. And the central processing unit 50 necessary for this connection by radio is used in common for all the channels. |
