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Maintenance
4-213160-A2-GB21-50 January 1997
3. From the Loopback screen, press the key until
the DTLB selection appears on the screen.
4. Select DTLB.
F1
Loopback:
RLB DCLB DTLB
F2
F3
5. From the DTLB screen, press the Function key for
the port for which you want to perform the data
terminal loopback. Use the scroll keys, if
necessary.
F1
Loopback: DTLB
Prt1 Prt2 Prt3
F2
F3
Test Started appears on Line 2. If a Data
Terminal loopback is already in progress, the
Already Active message appears. If an invalid
combination of loopbacks is in progress, the error
message Invld Test Combo appears (see
Table 4-8 for valid loopback test combinations).
Aborting Loopbacks
The Abort Loopback command stops all loopback tests
or any selected loopback test currently active on the
DSU/CSU.
To abort one or more loopback tests,
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
F1
Test:
Rlpbk Lpbk Ptrns
F2
F3
3. From the Loopback screen, select Abort.
F1
Loopback:
Abort LLB PLB
F2
F3
4. From the Loopback Abort screen, press the
desired Function key to abort All or one specific
loopback test. Use the scroll keys, if necessary.
F1
Loopback: Abort
All LLB PLB
F2
F3
If you select ALL, LLB, PLB, DLB, or RLB, skip
Step 5.
5. From the Abort screen, press the Function key that
corresponds to the port for which you want to
abort the test. Use the scroll keys, if necessary.
F1
Abort:
Test Name
Prt1 Prt2 Prt3
F2
F3
When abort is complete, the message Command
Complete appears on the Abort screen.
NOTE
If you mistakenly choose to abort
a loopback test that is not
currently running, a Command
Complete message will still
display and the loopback that is
currently active will still be
running. Use the TStat branch to
view the test status to determine if
the abort was successful.