Paradyne ACCULINK 316x User Manual Page 122

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ACCULINK 316x DSU/CSU
4-6 December 1996 3160-A2-GB22-10
Table 4-2
Valid Loopback Combinations
LLB PLB DLB RLB DCLB DTLB
LLB
N/A NO YES YES NO YES
PLB
NO N/A YES NO NO YES
DLB
YES YES N/A NO YES YES
RLB
YES NO NO N/A NO YES
DCLB NO NO YES NO YES
(on separate
ports)
YES
(on separate
ports)
DTLB YES YES YES YES YES
(on separate
ports)
YES
(on separate
ports)
Starting a Line Loopback
The Line Loopback command (LLB) loops the
received signal on the network interface back to the
network without change.
To perform a Line loopback,
1.
Press F2 to select T
est from the top-level display
screen.
F1
DS
U E
SF
Stat Test Cnfig
F2
F3
2. From the T
est screen, press F2 to select Lpbk.
F1
Test:
Rlpbk Lpbk Ptrns
F2
F3
3.
From the Loopback screen, press F2 to select
LLB.
F1
Loopback:
Abort LLB PLB
F2
F3
Test Started appears on Line 2. If a line loopback
is already in progress, the
Alr
eady Active
message appears. If an invalid combination of
loopbacks is in progress, the error message
Invalid Test Combo
appears (see T
able 4-2 for
valid loopback test combinations).
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