Paradyne ACCULINK 316x - Manual (Page 125)

Maintenance
4-9 3160-A2-GB22-10 December 1996
4. Press F3 to select RLB.
F1
Loopback:
PLB
DLB RLB
F2 F3
Test Started appears on Line 2. If a Repeater
loopback is already in progress, the Already
Active message appears. If an invalid combination
of loopbacks is in progress, the error message
Invalid Test Combo appears (see Table 4-2 for
valid loopback test combinations).
Starting a Data Channel Loopback
The Data Channel loopback command (DCLB) loops
the data received from the network interface, for all DS0
channels allocated to the selected port, back to the
network. The loopback occurs after the data passes
through the port circuitry but before it is sent out the data
port.
To perform a Data Channel loopback,
1. Press F2 to select Test from the top-level menu
screen.
F1
DSU ESF
Stat
Test Cnfig
F2 F3
2. From the Test screen, press F2 to select Lpbk.
F1
Test:
Rlpbk Lpbk
Ptrns
F2 F3
3. From the Loopback screen, press three times
to display the DCLB selection on the screen.
F1
Loopback:
Abort
LLB PLB
F2 F3
4. Press F3 to select DCLB.
F1
Loopback:
DLB
RLB DCLB
F2 F3
5. From the DCLB screen, press the function key for
the port for which you want to perform the data
channel loopback. Use the scroll keys, if
necessary.
F1
Loopback: DCLB
Prt1
Prt2 Prt3
F2 F3
Test Started appears on Line 2. If a Data Channel
loopback is already in progress, the Already
Active message appears. If an invalid combination
of loopbacks is in progress, the error message
Invalid Test Combo appears (see Table 4-2 for
valid loopback test combinations).