Starting A Data Terminal Loopback - Paradyne 3160-A3 Operator's Manual

4. Maintenance

Starting a Data Terminal Loopback

The Data Terminal Loopback command (DTLB) loops the data received from the
selected port, for all DS0 channels allocated to the port, back out of the port. This
loopback occurs after the data passes through the port circuitry but before it
reaches the T1 framer.
Procedure
To perform a Data Terminal loopback:
4-28
5. From the DCLB screen, press the Function key for the port for which you want
to perform the data channel loopback. Use the scroll keys, if necessary.
Loopback: DCLB
Prt1 Prt2
F1
Test Started appears on Line 2. If a Data Channel 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).
DSU
DTE
(DSX-1)
DTLB DTLB
PORT 2 PORT 1
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk Lpbk
F1
3. From the Loopback screen, press the
on the screen.
February 2001
Prt3
F2 F3
Combinations, for valid loopback test
CSU
ALL 1s
NETWORK
INTERFACE
496-14314-02
Ptrns
F2 F3
key until the DTLB selection appears
3160-A2-GB21-90