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CHAPTER 3: Configuration
Main Menu Option 7: Test Modes
Select Option 7 from the Main Menu to select the test mode status of the
ME0001C. The 2-Wire IDSL Line Driver test mode settings help to verify the
integrity of the data link and isolate communication difficulties.
Figure 3-19. Test mode menu.
To run or terminate a particular test, key in the option to get to that screen menu.
Test mode options 2, 3, 7, 8, and 9 require the Card to be in data mode with the
remote Card. The Card’s test modes are described below:
• OFF: Terminates all tests.
• 511: Initiates the built-in test-pattern generator and detector.
• 511 with Errors: Initiates the built-in test-pattern generator and detector. The
test-pattern generator also injects intentional errors approximately once per
second.
• Local Line Loop: Initiates a local line loop. Any data sent to the modem is
locally returned to its DTE interface.
• Local Line Loop and 511: Initiates the Local Line Loop test and starts the
internal 511 generator and detector.
• Local Line Loop and 511 w/errors: Initiates the Local Line Loop test and
starts the internal 511 generator and detector. In this test, the 511 pattern
generator injects intentional errors into the data stream.
• Remote Digital Loop: Initiates the Remote Digital Loopback test. Any data sent
to the remote Card is returned to the originating device.
