
PATH A
LOOP
1554 Dual LIU Controls and Indicators
Index Indicator Description
1 TO NET Jack access for output TO NETwork (opens data path from DTE).
2 MON Jack access to MONitor data from DTE to network.
3 FROM DTE Jack access for output FROM DTE to network (opens data path to network).
4 FROM NET Jack access for input FROM NETwork to DTE (opens data path to DTE).
5 MON Jack access to MONitor data from network to DTE.
6 TO DTE Jack access for output TO DTE (opens data path from network).
7 LOOP ON/OFF Switches looping ON/OFF (forces manual loopback to DTE).
8 POWER Indicates that power is applied to the unit.
1
FROM
DTE
FROM
NET
MON
TO
NET
TO
DTE
MON
PATH B
FROM
DTE
FROM
NET
MON
TO
NET
TO
DTE
MON
ON
OFF
PWR
LOOP
ON
OFF
2
3
4
5
6
7
8
1
2
3
4
5
6
7
NET B
RJ48
LINE
PROTECTION
LINE
PROTECTION
SEALING
CURRENT
YES/NO
ALBO
LOCAL
LOOP
SWITCH
LBO
0, 7.5, 15 dB
DTE MON LINE
DTE MON LINE
JACKS
NET A
RJ48
LINE
PROTECTION
LINE
PROTECTION
SEALING
CURRENT
YES/NO
SIDE A
LIU
ALBO
LOCAL
LOOP
SWITCH
LBO
0, 7.5, 15 dB
DTE MON LINE
DTE MON LINE
JACKS
SIDE B
LIU
1554
Front Panel Access Jacks (Side A) Front Panel Access Jacks (Side B)
TRANSPORT
®
TxPORT Customer Service
127 Jetplex Circle
Madison, Alabama 35758
Customer Service Returns:
800-926-0085, ext. 227
Product Technical Support
(8 a.m. to 5 p.m.)
800-285-2755 or
205-772-3770, ext. 255
After Hours Hot Line:
205-551-7538
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