ZMUX-1230T communication line switching equipment to switch to dual-redundant backup system phone users to switch users, and its main function is used when the main switch fails to receive manual input switches automatically switch to standby after the command line switch. 
 1) can be manually forced by switching to the main switch or standby switch, DIP switch about 30 channels simultaneously switching the user telephone line. 
 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) The device supports 30 channels of a user telephone line, the total number of cascaded devices 256, the total capacity of 7,680 road users to telephone lines. Through the main power switch and the user with a phone line.