ACCULINK 316x DSU/CSU
4-8
December 1996
3160-A2-GB22-10
To perform a DTE 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
once to
display the DLB selection on the screen.
F1
Loopback:
Abort
LLB
PLB
F2
F3
4. Press F3 to select DLB.
F1
Loopback:
LLB
PLB
DLB
F2
F3
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
Invalid Test Combo appears (see Table 4-2 for
valid loopback test combinations).
Starting a Repeater Loopback
The Repeater Loopback command (RLB) loops the
signal being sent to the network and back to the DSX-1
Drop/Insert and data ports. The signal is looped back as
close to the network interface as possible (after it has
passed through the framing circuitry of the DSU/CSU).
Therefore, framing CRCs and BPVs are corrected. If bit
stuffing is enabled, pulse density is enforced.
To perform a Repeater 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
twice to
display the RLB selection on the screen.
F1
Loopback:
Abort
LLB
PLB
F2
F3
Содержание ACCULINK 316x
Страница 4: ...ACCULINK 316x DSU CSU C December 1996 3160 A2 GB22 10 Notices...
Страница 23: ...Introduction 1 9 3160 A2 GB22 10 December 1996 Figure 1 6 Auxiliary Backplane...
Страница 38: ...Installation 2 15 3160 A2 GB22 10 December 1996 Figure 2 13 3160 3164 DSU CSU Cabling Configurations...
Страница 77: ...Operation 3 35 3160 A2 GB22 10 December 1996 Figure 3 24 Example Channel Allocation...
Страница 135: ...A 1 3160 A2 GB22 10 December 1996 Front Panel Menu A...
Страница 136: ...ACCULINK 316x DSU CSU A 2 December 1996 3160 A2 GB22 10...
Страница 137: ...Front Panel Menu A 3 3160 A2 GB22 10 December 1996...
Страница 175: ...Pin Assignments D 11 3160 A2 GB22 10 December 1996 Figure D 7 EIA 530A to RS449 Adapter Cable Feature Number 3100 F1 580...
Страница 177: ...Pin Assignments D 13 3160 A2 GB22 10 December 1996 Figure D 8 EIA 530A to V 35 Adapter Cable Feature Number 3100 F1 570...