User`s manual

3.3.25 Diagnostic Test
The Diagnostic Test page shows the test results for the connectivity of the physical layer and
protocol layer for both LAN and WAN sides.
• Testing Ethernet LAN Connection: This test checks the Ethernet LAN interface
connection.
• Testing ADSL Synchronization: This test checks the ADSL showtime. If this test returns
FAIL, all other tests will be skipped.
• Test ATM OAM Segment Loop Back: This test sends ATM OAM F5 Segment loop back
request cells to the CO. This test will pass if response cell is received. Since some service
providers might not support this test, it could still work even if this test fails. If this test fails
consistently and the ADSL modem seems not working, make sure the VPI and VCI are
configured correctly.
• Test ATM OAM End-to-End Loop Back: This test sends ATM OAM F5 End to End loop
back request cells to the CO. This test will pass if response cell is received. Since some r
service providers might not support this test, it could still work even if this test fails. If this