Paradyne 3910 operation manual Rem Digital Loop, TestLocal Loop Started

DCP Operation

Test:Local Loop

Started

F1 F2 F3

NOTE

For tributary modems only, the test is delayed 30 seconds to allow any outstanding network management messages to propagate upstream before the VF channel is interrupted by the test.

The message Started appears on the LCD, and the Test LED lights for the duration of the test. If Invalid Command appears on the LCD, another test is in progress. Select Abort to clear the current test and try again. If the Test Timeout configuration option is enabled, Test Timeout appears at the conclusion of the test. If it is disabled, the test operates until aborted. For more information on the Test Timeout configuration option, refer to the Test section in Chapter 4. A Ring Indicate during this test can cause errors.

To exit this function and remain in the Test branch, press the key. To exit and return to the

Top-Level menu, press the key.

Rem Digital Loop

This test is not available when using TMp modulation or Remote mode.

Rem Digital Loop performs a remote digital loopback (CCITT V.54 Loop 2), Figure 3-5. This test can verify the integrity of the local modem, the communication link, and the remote modem. Any data or pattern entered at the local DTE is sent to and returned from the remote modem. For this test to operate properly, the modems must be operating at the same rate and in Synchronous or Asynchronous Direct mode.

Figure 3-5. Remote Digital Loopback

3910-A2-GN32-30 November 1996 3-49