| 摘要 |
PURPOSE:To improve the effective utility of a radio line by constituting the titled system such that a 1st mode sending a position notifying signal and a 2nd mode not sending the signal are provided and both the modes are repeated at a proper period. CONSTITUTION:The position notifying signal is sent in setting the 1st mode. At the time of setting the 2nd mode, the signal transmission/reception from a pole changing signal to a bipolar signal are applied only between the line controller 7 and stationary radio equipment and no position notifying signal is sent. Thus, the 2nd mode is used much more than the 1st mode and both the modes are selected at a proper period, then the use of a radio line not directly relating to the call is reduced and the effective utilization of the radio line is improved. |
