CONTROL METHOD OF SIGNAL LINK IN COMMON LINE

摘要

PURPOSE:To improve the reliability of a signal link in a common line and the control and maintenance freedom of each device by optionally changing the corresponding relation between a common line signal device and a common line signal circuit through a time division switch for connecting talking. CONSTITUTION:When a fault is generated in a digital multiplex circuit consistuting a current link LNK1, a normal link is reconstituted by a specific channel in an interface device DIF3 of said circuit and a multiplexer MUX1 for the time division switch which is connected to a specific channel in the interface device DIF1 before the generation of the fault on the basis of an instruction from a CPUCC. At that time, the time-division switch multiplexer MUX3 and the common line signal device CSE3 can be used as spare devices.