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

Maintenance

Starting a Data Terminal Loopback

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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 for valid loopback test combinations).
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.
DSU
DTE
(DSX-1)
DTLB DTLB
PORT 2 PORT 1
Procedure
To perform a Data Terminal loopback:
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
appears on the screen.
March 1999
Prt3
F2 F3
CSU
ALL 1s
NETWORK
INTERFACE
496-14314-02
Ptrns
F3
F2
key until the DTLB selection
3160-A2-GB21-80