| 摘要 |
PURPOSE:To multiply all speeds, by setting integral multiples of 60 into the multiplied number, in case that the third speed-sequence line is multiplied in time division to sequences where channel basic speeds are 600bits/s and 800bits/s respectively. CONSTITUTION:Between sequence 1 of speed (bis/s) 600, 2,400, 4,800, 9,600 and 48,000 and sequence 2 of speed 800, 3,200, 12,800 and 64,000, 9,600 of sequence 1 is three times as high as 3,200 of sequence 2. Consequently, when the third speed sequence with 9,600 added, namely, 800, 3,200, 6,400, 9,600, 12,800 and 64,000 is constituted newly, this sequence can keep the relation of the integral ratio for sequences 1 and 2, and sequences 1 and 2 are mixed and stored. That is, the multiplexing number becomes the integral multiple of 2X2X3X5=60 by selecting 3,200 bits/s as the channel basic speed, and all speeds multiplied to constitute a time division exchange system. |
