iConnectAccess621
Technical Reference
www.opennw.com
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The following table lists the Modem Test screen Test Type field and its definitions:
Field
Options
Description
Test Type
F5 End
Connectivity to the BRAS server can be verified by
initiating a F5 Seg loopback via the DSLAM and to
the authentication server.
F5 Seg
Lost and corrupted ATM cells can be quickly ruled out in
the field by initiating a F5 Seg loopback (also known as
ATM ping) to the DSLAM and have the DSLAM respond by
looping back the OAM cells. By ruling out problems with
the ATM Layer, the service provider can then focus on
examining higher layer protocols and other configurations
to isolate the problem.
F4 End and F4 Seg
Tests
You can perform two types of OAM F4 Tests:
Segment
—the end of a connection segment
End-to-end
—the end of a VC/VP connection where the
ATM cells are terminated
