Paradyne 3910 operation manual Loc Analog Loop, Test LocAnalogLoop

COMSPHERE 3900 Series Modems

NOTE

For tributary modems only, the test is delayed 30 seconds to allow any outstanding network management messages to propagate upstream before the VF channel is interrupted by the test.

If the modem passes the 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, the modem is operating on dial lines or another test is in progress. If another test is in progress, select Abort to clear the current test and try again. If the modem is operating on dial lines, 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.

Loc Analog Loop

Loc Analog Loop performs a local analog loopback (CCITT V.54 Loop 3), Figure 3-4, 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.

Figure 3-4. Local Analog Loopback

To access Loc Analog Loop from the Test branch, make the following selections:

Test:

Loc_Analog_Loop

F1 F2 F3

Press the

key until Loc_Analog_Loop appears. Press any function key to start this test.

3-48 November 1996 3910-A2-GN32-30