Paradyne 3161-B3 - Manual (Page 125)

4. Maintenance
3160-A2-GB21-90 February 2001 4-23
Starting a Line Loopback
The Line Loopback command (LLB) loops the received signal on the network
interface back to the network without change.
Procedure
To perform a Line loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
3. From the Loopback screen, select LLB.
Test Started appears on Line 2. If a line 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).
496-14319-02
CSU DSU
NETWORK
INTERFACE
DTE
(DSX-1)
ALL 1s
LLB
PORT 1 PORT 2
ALL 1s
ALL
1s
F1 F2 F3
Test:
Rlpbk Lpbk Ptrns
F1 F2 F3
Loopback:
Abort LLB PLB