The IMC-574I is a value-based, managed Gigabit Ethernet solution is ideal for use in fiber infrastructure. The IMC-574I features two SFP ports and two fixed 10/100/1000Base-T copper ports. There are four distinct DIP switch selectable configurations that feature the IMC-574I as a 1+1 uplink port in revertive mode, a 1+1 uplink protection in non-revertive mode, a 4-port Gigabit switch, and a dual copper-to-fiber SFP media/mode converter (two Gigabit fiber media converters in one).
The term "1+1" refers to line protection where identical information is transmitted on two lines. The receiver chooses its communication line based on the revertive or non-revertive configuration. When a fault is detected on the active line, the traffic is switched to the redundant line. In non-revertive mode, data is not returned to the original line unless the backup line fails or is disconnected. Once the original line is no longer in a fault condition, data can be returned to the original line.
