Loopback at Ethernet port on ONT can be performed in TJ5500. Before starting the test, make sure ONT cards are properly discovered and TJ5500 WUI is showing all supported ONT Ethernet ports.
Go to Configuration > Access menu and click Manage ONTs option. Manage ONTs page is displayed.
Click on the desired row of ONT present. The set of tabs will be displayed below the ONT window.
Click on the ETH tab as shown in the following figure:
Click on Get loopback button for the desired row of ONT Ethernet port where loop back test needs to be run. The Trigger loopback window is displayed.
Select the duration as 1 minute/2 minutes/3 minutes from the drop down menu and click OK. View ONTEthPort Loopback Details window will be displayed.