ADTRAN TDU 120e user manual REM V.54, Pattrn, Results, DBU Loopback, DBU Test

Models: TDU 120e

1 146
Download 146 pages 37.58 Kb
Page 106
Image 106

Chapter 7. Test Menu

OFF

The loop is deactivated.

REM V.54 Cont.

The remote loopback causes a continuous V.54 code to be sent to the far end. The Nx at the far end acti- vates a PORT/LOCAL loopback upon detection of the V.54 code.

The TDU 120e checks the remote loopback activation by detecting a proper response from the remote end. While waiting for the response, the display shows Looping. If successful, the display changes to Looped-Up. If unsuccessful, the display shows Failed.

511 PATTRN

Activates the generation of the 511 test pattern.

ON

The pattern check circuitry is enabled and a test started. The test is ended by selecting OFF.

OFF

The pattern generation and check is disabled.

511 RESULTS

Displays the results of the 511 test indicated in the 511 option. The results are in the form of the number of errored seconds. The error count can be cleared by pressing C.

DBU LOOPBACK

ON

Initiates a loopback from the DBU towards the exter- nal DCE.

OFF

Terminates the loopback test.

DBU TEST

This selection is used to force a backup to occur even if a backup condition does not exist.

7-10

TDU 120e User Manual

61202156L2-1

Page 106
Image 106
ADTRAN TDU 120e user manual REM V.54, Pattrn, Results, DBU Loopback, DBU Test