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Test Branch
8-33810-A2-GB30-20 November 1996
Loc Analog Loop
Loc Analog Loop performs a local analog loopback
(CCITT V.54 Loop 3), Figure 8-1, that verifies modem
operation as well as the connection between the DTE and
modem. The modem must be offline to perform this test,
otherwise
Invalid Command appears.
To access Loc Analog Loop from the T
est branch,
make the following selections:
F1
Test :
Loc_Analog_Loop
F2
F3
Press the key until Loc Analog Loop appears.
Press any function key to start this test.
F1
Test : Local Loop
Started
F2
F3
The
message
Started appears on the LCD, and the Test
LED (Model 3810 and Model 3811) lights for the duration
of the test.
If the Test Timeout configuration option is enabled,
T
est T
imeout 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 Tests
section in Chapter 9.
A Ring Indicate during this test can cause errors.
To exit this function and remain in the T
est branch,
press the
key
. To exit and return to the Top-Level
menu, press the
key
.
AT Command Equivalent
The
A
T command for Local Analog Loopback is &T1.
Figure 8-1. Local Analog Loopback