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Test Branch
7-33980-A2-GB30-40 October 1998
Loc Analog Loop
Loc Analog Loop performs a local analog loopback
(ITU-T V.54 Loop 3), Figure 7-1, that verifies modem
operation as well as the connection between the DTE and
modem. The modem must be offline and in synchronous
or asynchronous Direct mode to perform this test,
otherwise Invalid Command appears.
To access Loc Analog Loop from the Test 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 lights for the duration of the test.
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 8, Configure Branch.
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.
AT Command Equivalent
The AT command for Local Analog Loopback is &T1.
Figure 7-1. Local Analog Loopback