Data Connections
61181001L1-5E
17
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
, on the right side of the backplane. To wire the Total
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
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.
6. Neatly tie down the test cable pair.
is an illustration of connecting DLT to the Total Access 3000 Chassis.
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.
E D C B A
D C B A
F2
LOOP
TEST
ACCESS
33
1
64
32
33
1
64
32
33
1
64
32
33
1
64
64
32
ADMIN
J31
PAIR 2
P11
P12
P8
PAIR 3
PAIR 1
33
1
64
32
P10
PAIR 8
PAIR 6
PAIR 5
P9
P7
J33
EXTCLK
64
33
1
33
20
20
20
10
20
PAIR 7
1
10
20
32
1
64
32
33
1
NTWK MGMT
J30
-48 VDC PRI
-48 VDC
RET
P22
ACO
RMT
AUX1
AUX2
A
A
A
A
B
B
B
B
-48 VDC SEC
-48 VDC RET
P3
NO
NC
C
NO
NC
C
AUX1
AUX2
P21
CRI-A
NO C NC NO C NC NO C NC
MAJ-A
MIN-A
P1
P20
P2
J32
P19
P18
ALARM OUTPUTS
CRI-A
B - OUT
NO C NC NO C NC NO C NC
MAJ-A
MIN-A
A - OUT
B IN
E - NET
IN
OUT
+ –
+ – S
+ – S
+ – S
RS485
A B
A B
T
R
S
T1
R1
S
F1
10
30
20
40
48
E D C B A
P14
P15
S
S
30
40
48
1
6
T
R
T1
R1
P23
DSX1
TEST
ACCESS
F4
F3
PC2A 94V-0
2298
1
J1
S
1
R22
P24
EXTCLK
C-IN
1
10
20
8
+
–
R21
CUSTOM
TELECOM
E190349
1181004L1
PAIR 4
P5
Total Access
Chassis
1
T
R
S
T1
R1
S
30
S
S
30
40
1
6
T
R
T1
R1
P23
DSX1
TEST
ACCESS
F4
