| 摘要 |
PURPOSE:To secure talking between the ground unit and the moving car by making the switch of the aural line of the moving car and via the ground controlling transmitter/receiver operated on the ground. CONSTITUTION:Both the controlling transmission system and the aural transmission system are provided between the ground unit and moving car 1. Then switch 8 of the aural line on car 1 is made from the ground side via ground controlling transmitter/receiver 18. Thus, the talking becomes possible between ground 2 and an optionl moving car. |
