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Maintenance
4-29
3160-A2-GB21-80
March 1999
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.
" Procedure
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