DSL542EU ADSL Router User’s Manual
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5.4.2 OAMLoopback
The OAMLoopback test is used to check whether your Router is properly connected to the
WAN Network. This test may take a few seconds to complete. To perform the test, select your
connection from the drop-down list and press the Apply button. Before running this test,
make sure you have a valid DSL link. If the DSL link is not connected, this test will always fail.
Also the DSLAM must support this feature; not all DSLAMs have F4 and F5 support.