TRANSPORT
®
1554 Dual LIU Card Configuration Guide
Part Number 45-00010
Rev 1.00
Pin # Pinouts for C1 - C14
1 Network Out Tip - Secondary
2 Network Out Ring - Secondary
3 Network Out Tip - Primary
4 Network Out Ring - Primary
The Dual LIU Card contains user options for setting the
LBO level and the sealing current. When the Dual LIU
card is used in conjunction with a 1557 card, it provides
the functionality of two indus try standard ESF channel
service units. LIU cards must be used if the APS unit is
being connected to a Telco facility.
5 Equipment Out Tip - Secondary
6 Equipment Out Ring - Secondary
7 Equipment Out Tip - Primary
8 Equipment Out Ring - Primary
The LBO options (S2 and S4) are 3-position manual
slide switches with the marked values of 0, 7.5, and 15
dB. If unsure of the exact setting, then slide to 0 dB.
9 Network In Tip - Secondary
10 Network In Ring - Secondary
11 Network In Tip - Primary
12 Network In Ring - Primary
13 Equipment In Tip - Secondary
!
CURRENT ON if line power is being supplied from the
T1 facility to the LIU card(s). Damage to the unit can
result.
14 Equipment In Ring - Secondary
15 Equipment In Tip - Primary
16 Equipment In Ring - Primary
21
36 35
21
36 35
21
36 35
J1
J2
21
36 35
21
36 35
21
36 35
21
36 35
P1 P2
J5
21
36 35
21
36 35
21
36 35
36 35
C14C13C12C11C10C9C8C7C6C5C4C3C2C1
J3
TB1
J4
21
J6
J7
21
36 35
J8
J9
21
36 35
21
36 35
1050 Chassis Rear View
Do not option the LIU for SEALING
1554 Dual LIU Card
1 to 2: Sealing
Current OFF
2 to 3: Sealing
C15
Front Panel
(see other sid e)
Current ON
Contacts
:
Primary
Name:
Phone:
Location:
Date installed:
Date last serviced:
Slot number:
Circuit number: Line 1:
Line 2:
S2
1
J1
2
3
1
J2
2
3
LBO
Mark your particular LBO
1
J3
2
3
1
J4
2
3
selection in these boxes.
S4
LBO
Secondary
Chassis number:
0dB
-7.5 dB
-15 dB
0dB
-7.5 dB
-15 dB
®
1554 Dual LIU Controls and Indicators
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
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.
PATH A
1
2
3
4
5
6
7
8
TO
NET
MON
FROM
DTE
FROM
NET
MON
TO
DTE
LOOP
ON
OFF
PWR
PATH B
1
2
3
4
5
6
TO
NET
MON
FROM
DTE
FROM
NET
MON
TO
DTE
Front Panel Access Jacks (Side A) Front Panel Access Jacks (Side B)
DTE MON LINE
JACKS
DTE MON LINE
LOCAL
LOOP
SWITCH
ALBO
SIDE A
LIU
LBO
0, 7.5, 15 dB
PROTECTION
SEALING
CURRENT
YES/NO
PROTECTION
LINE
NET A
RJ48
LINE
DTE MON LINE
JACKS
DTE MON LINE
LOCAL
LOOP
SWITCH
ALBO
SIDE B
LIU
LBO
0, 7.5, 15 dB
PROTECTION
SEALING
CURRENT
YES/NO
PROTECTION
LINE
LINE
NET B
RJ48
LOOP
7
ON
OFF
1554
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