| 摘要 |
PURPOSE:To designate an optional talking channel from a travelling object test subscriber to attain talking channel changeover test by sending a talking channel designation signal designating the optional talking channel registered in a test subscriber class in advance. CONSTITUTION:A travelling object test subscriber 1 uses a talking channel A assigned from a control station 3 with a base station 2 to make communication. The subscriber 1 inputs and designates a number of a talking channel B switched newly during the communication from a telephone set PBT 10. The sent talking channel designation signal (PB signal) is received by a PBR 31 via the talking channel A and the base station 2 through a SW 30 of the control station 3. A CTL 32 receiving a PB signal from the PBR 31 confirms it that the subscriber 1 is registered in the test subscriber class, analyzes the PB signal to assign the talking channel B to the subscriber 1 thereby switching the talking channel and conducting various tests such as deterioration state of the electric field strength of the talking channel A. |
