| 摘要 |
PURPOSE:To drop a block rate at the time of setting a channel for high speed information by grasping selectively the same number of arbitrary idle output time slots as that of input time slots on a highway and corresponding the input time slots to the output ones so that the time order of the high speed information cannot be altered. CONSTITUTION:In a channel controller 2, an idle information control part 21, an output time slot grasp control part 22 and a time order guarantee part 23 are installed. The idle information control part 21 controls the idle state of each output time slot on an output highway HW0. The output time slot grasp control part 22 grasps selectively the prescribed number of arbitrary idle output time slots on the output highway HW0, and decides the correspondence to the input time slot. The time order guarantee part 23 shows the time order of each output time slot grasped by said part 22 and each input time slot. Namely, even if the input and output time slots transmitting high speed information are not continuously arranged, the time order of the high speed information will not be altered.
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