| 摘要 |
A plurality of control channels different frequency is used at equal frequencies to couple a base unit (1) and radio communication terminal unit (2). A radio communication device uses the plurality of control channels sequentially or at equal frequencies by switching operations to thereby transmit and/or receive information on talking channels, etc. When a particular control channel is occupied for a long time due to cross talk, etc., another control channel is selected for telephone communication purposes. |
