ZMUX-1215 communication line switching equipment, its main function is when the primary circuit fails, the receiver of a manual command switch automatically switches to the standby line. 
 1) can be manually forced by switching to the main line or backup lines dipswitches about the same time switching 15 Road E1 data. 
 2) Use the software control switching, we can use Ethernet, RS232 or RS485 communication among any way. 
 3) Use the software control switching, the switching can be the first of several road computer set, a switching some way. 
 4) 256 RS485 cascade. 
 5) a device to support 15 Road E1 data, the total number of cascaded devices 256, the total capacity of 3840 Road E1 data.