ADTRAN Express L768 - Manual (Page 106)

Chapter 3. Terminal Menu Operation and Structure
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TEST MENU
The Express L768’s Test menu contains built-in tests that can be used
to diagnose problems. Figure 3-12 shows the Test menu screen.
Figure 3-12. Test Screen
The following tests can be run:
» Test Menu/Echo Request
Write security: 4, Read security: 5
When activated, the echo request test will begin sending continuous
PPP echo request packets to any open LCP ports. Results are dis-
played on the screen. This is not used in the Frame Relay mode.
» Test Menu/2047 Loopback
Write security: 4, Read security: 5
When activated, a loopback command is sent to the far-end HDSL de-
vice and an internal 2047 pattern is continually transmitted towards
the HDSL circuit. Loopbacked data is checked and an error count is
maintained.