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Data Network Terminal Single-port and Multiport Operating Instructions
52 (128) © Nokia Corporation DN01145897
Nokia Proprietary and Confidential Issue2-0en
The following tests are available for testing a DNT2Mi terminal:
Table 14. Tests available for DNT2Mi
Front
panel
Q1
management
Automatic
control
Note
Equipment tests
Power up test After power is
switched on
Self test Equipment
self test
Self test (5,4)
Line interface test
Network test loop
ITU-T X.150 loop 2
Data coming from the line is
looped back to the line.
Line DL
test
Loop to line (DL) See Figure “Network
test loop (all ports)”
after this table.
Dedicated port tests
Local test loop
ITU-T X.150 loop 3
Data coming from the DTE is
looped back to the DTE.
Port LL test Loop to DTE (LL)
(5,2,#,3)
V.xx Circuit 141
or X.21 loop 3
command
Automatic control can
be disabled by setting
circuit 141 in the ‘Not in
use’ state.
See Figure “Local test
loop in a port” after this
table.
Network test loop
ITU-T X.150 loop 2
Data coming from the line is
looped back to the line.
Port DL
test
Loop to line (DL)
(5,2,#,2)
See Figure “Network
test loop (single-port)”
after this table.