| 摘要 |
<p>PROBLEM TO BE SOLVED: To attain quick channel changes and also by a called station when interruption or the like is generated in communication by a radio communication equipment. SOLUTION: When interruption is generated in communication, one station retrieves an empty channel by an operating part 6, generates a channel switching signal by adding a switching control signal by a controlling part 4 at the time of selecting channel switching by the operating part 6, and converts it into a DTMF(dual tone multi frequency) signal by a DTMF generator 7. The pause in the interruption of a channel in communication is detected by a receiving part 3, and when it is detected, the DTMF signal of the channel-switching signal is transmitted. At the time of detecting the channel-switching signal from the received signal by a DTMF receiver 8, the called station transmits a DTMF switching roger signal, and switches the channel to the channel of the switching signal. One station detects the DTMF switching roger signal and switches the channel, thereby enabling, communication.</p> |
