CX82320 ADSL USB Endpoint Windows Drivers User Guide
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3.4.9 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 USB Connection:
This test checks the USB 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.