| 摘要 |
PURPOSE:To decrease the block rate of a channel and to improve the communication of the channel by forming n-set of parallel secondary time switch(STSW) circuits to correspond to the n-set of highway(HW) outputs. CONSTITUTION:A primary time switch(PTSW) circuit is a circuit to exchange a time slot of a degree of multiplex K(K=2, 3...) and the n-set of parallel circuits are formed to correspond to the n-set (n=2, 3...) HW inputs. A spatial switch(SWS) 21 has n-set of incoming highways and nXm sets of outgoing highways and switches a time slot to a proper outgoing highway without changing the location of the time slot of each inputted highway. Then a 1st spatial switch output terminal 1-1 is inputted to the STSW circuit 41. Moreover, the (1-m)th terminal is correspondent to a 1st output highway. The STSW 49 to select a proper time slot in the parallel time switches and to output it to a 1st output highway terminal 51 is an STSW corresponding to the n-th output highway terminal 59. |
