| 摘要 |
PURPOSE:To shorten time required for the release-connection of a half-fixed line by supplying the data reading address of the channel memory of a time division switch with the aid of the output of a selection circuit and composing a line indicated by a half-fixed line control device to be housed in a time division switching system as the half-fixed circuit. CONSTITUTION:Data held by a second control memory 4 is written by a man- machine interface 8 and the half-fixed line control device 7 without using a call control device 6. Therefore by the interface 8 and the device 7, the address of the channel memory 1 which needs half-fixed connection is stored in a second control memory 4 and '1' is stored in the high rank bit of the memory 4 and in a first memory 3, only the address of the channel memory 1 associating with a normal call is stored by the call control device 6. Thus all the required channels are set by the address of the channel memory 1 read from the first control memory 3 or the second control memory 4.
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