Remote Digital Loopback; Rem Digital Loop - Paradyne COMSPHERE 3910 Installation And Operation Manual

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
Top-Level menu, press the

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.
3910-A2-GN32-30
Test:Local Loop
Started
F1 F2 F3
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.
key.
Figure 3-5. Remote Digital Loopback
November 1996
NOTE
key. To exit and return to the
DCP Operation
3-49