| 摘要 |
PURPOSE:To reduce a man-house for forming program of the exchange main body and to relieve traffic by performing the forced-releasing of a trunk through a timer circuit whose time-setting is optionally modified. CONSTITUTION:In an inteligent-type trunk 5, the timer circuit of which time- setting is optionally be modified from a CPU2 is provided. The time-up signal outputted by this timer is supplied as a restoration signal to the CPU2 by starting a normal trunk-restoring program in order to forced-release the trunk. Accordingly, because the program on the exchange main body side hardly performs all of the controlings, the man-hour for forming program on the said side is reduced, hence the traffic is relieved. |
