Paradyne 316x manual Starting a Repeater Loopback, Llb Plb Dlb

ACCULINK 316x DSU/CSU

To perform a DTE loopback,

1.Press F2 to select Test from the top-level menu screen.

DSU ESF

Stat Test Cnfig

F1 F2 F3

2. From the Test screen, press F2 to select Lpbk.

Test:
Rlpbk	Lpbk	Ptrns
F1	F2	F3

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.

3.From the Loopback screen, press once to display the DLB selection on the screen.

Loopback:

Abort LLB PLB

F1 F2 F3

4. Press F3 to select DLB.

Loopback:

LLB PLB DLB

F1 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).

To perform a Repeater loopback,

1.Press F2 to select Test from the top-level menu screen.

DSU ESF

Stat Test Cnfig

F1 F2 F3

2. From the Test screen, press F2 to select Lpbk.

Test:

Rlpbk Lpbk Ptrns

F1 F2 F3

3.From the Loopback screen, press twice to display the RLB selection on the screen.

Loopback:

Abort LLB PLB

F1 F2 F3

4-8 December 1996 3160-A2-GB22-10