Paradyne ACCULINK 316x - Manual (Page 126)

ACCULINK 316x DSU/CSU
4-10 December 1996 3160-A2-GB22-10
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 the port. This
loopback occurs after the data passes through the port
circuitry but before it reaches the T1 framer.
HANDLING PRECAUTIONS
FOR
STATIC-SENSITIVE DEVICES
This product is designed to protect
sensitive components from damage
due to electrostatic discharge (ESD)
during normal operation. When
performing installation procedures,
however, take proper static control
precautions to prevent damage to
equipment. If you are not sure of the
proper static control precautions,
contact your nearest sales or service
representative.
To perform a Data Terminal loopback,
1. Press F2 to select Test from the top-level menu
screen.
F1
DSU ESF
Stat
Test Cnfig
F2 F3
2. From the Test screen, press F2 to select Lpbk.
F1
Test:
Rlpbk Lpbk
Ptrns
F2 F3
3. From the Loopback screen, press four times
to display the DTLB selection on the screen.
F1
Loopback:
Abort
LLB PLB
F2 F3
4. Press F3 to select DTLB.
F1
Loopback:
RLB
DCLB DTLB
F2 F3
5. From the DTLB screen, press the function key for
the port for which you want to perform the data
terminal loopback. Use the scroll keys, if
necessary.
F1
Loopback: DTLB
Prt1
Prt2 Prt3
F2 F3
Test Started appears on Line 2. If a Data
Terminal loopback is already in progress, the
Already Active message appears. If an invalid
combination of loopbacks is in progress, the error
message Invalid Test Combo appears (see
Table 4-2 for valid loopback test combinations).