| 摘要 |
PURPOSE:To increase and decrease the network capacity by mounting a switch matrix group and a control means on a module and at the same time forming a switching network with plural modules. CONSTITUTION:A network control program is executed to control a switching network, and an idle B link is selected between a secondary switch module SSWM0 and a third switch module TSWM0. Then the network control program checks whether both link A to a stored subscriber line and the link C to a stored trunk are idle or not. When both links A and C are busy, another idle link B is selected. Such a procedure is repeated. Then the network control program drives a switch corresponding to a link when a bus with which the links A-C between subscribers and trunks are all idle is detected. |
