Paradyne 3166 CSU - Manual (Page 86)

Monitoring and Testing
4-20 3166-A2-GB20-10 November 1998
Starting a Line Loopback
The Line Loopback command (LLB) loops the received signal on the network
interface back to the network without change.
98-15946
CSU DSU
NETWORK
INTERFACE
ALL 1s
LLB
PORT 1
"
Procedure
To perform a Line loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
F1
Test:
Rlpbk Lpbk
Ptrns
F2 F3
3. From the Loopback screen, select LLB.
F1
Loopback:
Abort
LLB PLB
F2 F3
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 4-7 for
valid loopback test combinations).