4. Maintenance

Starting a Repeater Loopback

The Repeater Loopback command (RLB) loops the signal being sent to the network back to the DTE Drop/Insert (DSX-1) 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). Framing CRCs and BPVs are corrected.

DTE

(DSX-1)

DSU CSU

RLB

NETWORK

INTERFACE ALL 1s

PORT 1 PORT 2

496-14318-02

Procedure

To perform a Repeater loopback:

1.From the top-level menu screen, select Test.

2.From the Test screen, select Lpbk.

Test:

Rlpbk Lpbk Ptrns

F1 F2 F3

3.From the Loopback screen, press the key until the RLB selection appears on the screen.

4.Select RLB.

Loopback:

PLB DLB RLB

F1 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 Invld Test Combo appears (see Table 4-8, Valid Loopback Combinations, for valid loopback test combinations).

4-26

February 2001

3160-A2-GB21-90

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Paradyne 3165-A2, 3164-A2, 3160-A3, 3161-B3 manual Starting a Repeater Loopback