Local Digital Loopback - Paradyne 3800 User Manual

Loc Digital Loop
Loc Digital Loop is issued by a local modem and
forces it to loopback any data received from the remote
modem (Figure 8-3). (This test operates the same as a
ITU-T V.54 Loop 2 except it is issued at your modem.)
This is useful if a remote modem is incapable of initiating
a remote digital loopback from its location. For this test to
operate properly, the modems must be online and in
Synchronous or Asynchronous Direct mode.
To access Loc Digital Loop from the Test branch, make
the following selections:
Test :
Loc_Digital_Loop
F1 F2
Press the key until Loc_Digital_Loop appears.
Press any function key to start this test.
Test : Digitl Loop
Started
F1 F2
3810-A2-GB30-30
F3
F3
Figure 8-3. Local Digital Loopback
September 1998
The message Started appears on the LCD and the Test
LED (Model 3810 and Model 3811) lights.
If the message Invalid Command appears on the
LCD, then another test is in progress. Select Abort to clear
the current test and then select Loc Digital Loop.
If the Test Timeout configuration option is enabled,
Test Timeout appears at the conclusion of the LCD. If it is
disabled, the test operates until aborted. For more
information on the Test Timeout configuration option,
refer to the Tests section in Chapter 9.
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.
AT Command Equivalent
The AT command for Local Digital Loopback is &T3.
Test Branch
8-5