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Connect DLT
Digital (also referred to as Logical) Loop Test (DLT) access is gained by wiring into the P23
connector, labeled
DSX-1/E1 TEST ACCESS
Access 3000 Chassis for DLT access, perform the following steps:
1. After locating the test loops and running them to the Total Access 3000 Chassis, use wire
strippers to strip approximately 1 to 1-1/2 inches from the test leads.
2. Using the wire-wrap tool, wire wrap the central office "T" and "R" leads to the Total Access
3000 Chassis "R" and "T" pins, respectively, on terminal P23.
3. Wire wrap the drain wire of the cable to the top pin labeled "S" on P23. If the drain wire
has been grounded at the test head, do not connect it to the "S" pin. Only one should be
grounded.
4. Wire wrap the central office "T1" and "R1" leads to the Total Access 3000 Chassis "R1" and
"T1" pins, respectively, on terminal P23.
5. Wire wrap the drain wire of the cable to the bottom pin labeled
has been grounded at the test head, do not connect it to the
grounded.
6. Neatly tie down the test cable pair.
Figure 8
is an illustration of connecting DLT to the Total Access 3000 Chassis.
P 5
P A I R 4
64
33
T
R
S
20
20
20
T1
R1
S
LOOP
TEST
ACCESS
64
P A I R 5
33
1
J33
NTWK MGMT
J30
Figure 8. Total Access 3000 DLT Connections (T1 Only)
Wiring to DSX-1
The Total Access 3000 Chassis receives its DSX-1 feed from the DSX cross-connect panel in
the CO. For HDSL, ISDN and T1 deployment, the Total Access 3000 Chassis accepts 28
DSX-1s from the CO via two 64-pin amphenol connectors to the backplane on Pairs 7 and 8.
For full deployment of Optical DS2, 4 DSX-1s are needed on each slot, and are received on
four 64-pin amphenol connectors on Pairs 5, 6, 7, and 8. The female amphenol connectors
plug into the rear of the Total Access 3000 chassis on the appropriate male Pair connectors.
Refer to the Installation and Maintenance Practices for the access modules being deployed, for
a full description of the different Total Access 3000 loop assignments and pinouts.
61181001L1-5E
, on the right side of the backplane. To wire the Total
P 1 1
P A I R 2
64
33
32
1
64
P 1 2
P A I R 3
32
10
Total Access
20
Chassis
33
P9
P A I R 7
64
1
32
64
P7
P A I R 6
32
-48 VDC PRI
-48 VDC SEC
P22
ALARM OUTPUTS
P3
P21
P1
A
B
A
B
A
B
A
B
NO
C
NC
NO
C
NC
NO
C
NC NO
C
NC NO
C
NC
NO
C
NC NO
C
1
-48 VDC
RET
-48 VDC RET
ACO
RMT
AUX1
AUX2
AUX1
AUX2
CRI-A
MAJ-A
MIN-A
CRI-A
MAJ-A
ADMIN
J31
64
33
33
32
1
P 8
E D C B A
E D C B A
1
P A I R 1
P15
P14
1
1
J1
D
C
B
A
1
F2
F1
10
10
10
20
8
P23
20
DSX1
30
TEST
30
ACCESS
1
T
P24
R
EXTCLK
C-IN
S
1
+
T1
40
–
R1
S
S
32
6
F4
F3
48
48
64
33
33
32
1
PC2A
94V-0
2298
P 1 0
1181004L1
1
P A I R 8
EXTCLK
RS485
J32
R21
P20
P19
P18
A
B
A
B
+
–
S
+
–
S
+
+
–
–
S
NC NO
C
NC
P2
CUSTOM
TELECOM
E190349
B - OUT
A - OUT
B IN
IN
OUT
E - NET
MIN-A
Data Connections
on P23. If the drain wire
S
pin. Only one should be
S
P23
DSX1
1
30
30
TEST
T
ACCESS
1
T
R
R
S
S
T1
T1
R1
R1
S
6
F4
S
17
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