Starting A Payload Loopback; Starting A Dte Loopback - Paradyne 3150 Operator's Manual

ACCULINK 315x CSU

Starting a Payload Loopback

The Payload Loopback command (PLB) loops the
received signal on the network interface back to the
network. The signal is looped back as close to the DTE
port as possible (after it has passed through the framing
circuitry of the CSU). Framing CRCs and BPVs are
corrected.
To perform a Payload loopback,
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk Lpbk
F1
3. From the Loopback screen, select PLB.
Loopback:
Abort
F1
Test Started appears on Line 2. If a Payload
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
valid loopback test combinations).
4-16
Ptrns
F2 F3
LLB PLB
F2 F3
Table 4-8 for
February 1998

Starting a DTE Loopback

The DTE Loopback command (DLB) loops the
received signal on the DTE port back to the DTE without
change.
To perform a DTE loopback,
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk Lpbk
F1
3. From the Loopback screen, press the
the DLB selection appears on the screen.
4. Select DLB.
Loopback:
LLB
F1
Test Started appears on Line 2. If a DTE
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
valid loopback test combinations).
Ptrns
F3
F2
key until
PLB DLB
F3
F2
Table 4-8 for
3150-A2-GB21-80