The line termination will be configured in the software settings. Default value: 120 Ohm.
This is how you change the line termination of SX2-express SinglePRI or SX2-express DualPRI
1 Run computer management, the simplest possibility: (the easiest way is to use the context menu for "My Computer" on the Windows Desktop).
2 Under "ISDN Controller" switch to the corresponding SX2-express board.
3 There are settings for each Controller. On the right side mark the controller and choose the line termination you want in the dropdown list.
You can choose between 120, 110,100 and 75 Ohm.
4 Save the changes with "OK" and close the Device Manager.