Test Branch; Abort; Self; Local Analog Loop - Paradyne COMSPHERE 3821PLUS User Manual

To exit this function and remain in the Status branch,
press the key. To exit and return to the Top-Level
menu, press the key.

Test Branch

The Test branch of the Top-Level menu allows you to
initiate various modem tests. Use these tests if you are
having data communication problems, such as periodic
character loss, random errors, or constant format errors.
By the process of elimination, you can usually isolate the
fault in your system.
There are six selections under Test:

Abort

Self (Self-Test)
Loc Analog Loop (Local Analog Loopback)
Rem Digital Loop (Remote Digital Loopback)
Loc Digital Loop (Local Digital Loopback)
Pattern
The only tests that can operate concurrently are
Pattern with a Local Analog Loopback and Pattern with
a Remote Digital Loopback. If any test is operating,
besides the two combinations just mentioned, it must be
canceled before starting another test.
The Test branch only initiates and cancels tests. If any
parameters need to be set, refer to
(Modem Status)
MDMA mdmb mdmc
Call_Setup Status Configure
Test
Abort Loc_Analog_Loop

Self

Rem_Digital_Loop
3821-A2-GB20-40
Table 3-10.
Control Remote Security
Loc_Digital_Loop
Pattern
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January 1999
Abort
Abort ends any test that is in progress and brings the
modem back to the normal mode of operation.
Confirmation is provided by the Command Complete
message.
Select Abort, and the modem stops all tests currently
in progress and displays the Command Complete status
message on the LCD.
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.
Self
Self performs an internal self-test of the modem,
which takes less than a minute to complete. The modem
must be offline (not connected with another modem),
otherwise Invalid Command appears. This test is not
valid in Remote mode and does not appear on the LCD
of either modem when in Remote mode.
Select Self. (All LCD cells and SDCP status
indicators light.) If the modem passes self-test, Pass
appears on the LCD. If it fails, Failed appears. If the
modem fails, contact your service representative.
If Invalid Command appears on the LCD, then
another test is in progress or the modem is operating on
dial lines. Select Abort to clear the current test, or
disconnect to clear the dial lines, and then choose Self.
If the modem receives a ring signal during this test,
the test is canceled and the RI Abort message appears.
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.

Local Analog Loop

Loc Analog Loop performs a local analog loopback
(ITU-T V.54 Loop 3) 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,
press the key until Loc Analog Loop appears. Press
any function key to start this test.
The message Started appears on the LCD, and the
Test LED lights for the duration of the test.
SDCP Menus
3-13