Paradyne 3821PLUS manual Test Branch, Abort, Self, Local Analog Loop

SDCP Menus

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 Table 3-10.

(Modem Status) MDMA mdmb mdmc

Call_Setup Status Configure Control Remote Security

Test

Abort		Loc_Analog_Loop		Loc_Digital_Loop
	Self		Rem_Digital_Loop		Pattern

494-14855

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.

3821-A2-GB20-40 January 1999 3-13