| 摘要 |
PURPOSE:To prevent the collision of a polling reply signal from two handset operating section by providing a delay presence setting section retarding one frame or above of the polling reply signal from any handset operating section. CONSTITUTION:Suppose that a polling signal 8a is sent from a main body control section 1 to a 1st and a 2nd handset operations 2, 3 via a signal line 4. In this case, if a 1st delay presence setting section 6 is set to the absence of delay and a 2nd delay presence setting section 7 is set to the presence of 1 frame delay, the polling reply signal from the 1st and 2nd handset operating sections 2, 3 is 8b, 8c and the polling reply signals 8b, 8c of both are not collided. |
