Table of Contents
Advertisement
Total Access 3000 23-Inch Chassis Installation and Maintenance Practice
MUX B Clock Output (B-OUT) - P20
The MUX B clock output Used to output a DS1 BITS clock from a SONET MUX B. Wire the "
"
" and drain lead from the connector P20 to the subsequent equipment's "
–
lead.
Wiring Test Access (T1 Only)
A six-lead (T, R, and drain, T1, R1, and drain) common test access bus (P13) is provided for
metallic test access to all customer loops and is labeled
An additional test access bus (P23), labeled
If the Total Access 3000 being installed will use these testing features, wiring will be required
to gain access to the test leads.
Connect Mechanical Loop Test (T1 Only)
Mechanical Loop Test (MLT) access is gained by wiring into the connector labeled
, P13, on the left side of the backplane. To wire the Total Access 3000 for MLT access,
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 "R" and "T" pins, respectively, on terminal P13.
3. Wire wrap the drain wire of the cable to the top pin labeled "S" on P13. 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 "R1" and "T1"
pins, respectively, on terminal P13.
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 7
is an illustration of connecting MLT to the Total Access 3000 Chassis.
Figure 7. Total Access 3000 MLT Connections (T1 Only)
16
DSX1 TEST ACCESS
T
R
64
P 5
P A I R 4
64
32
33
P 1 2
S
20
10
T1
T
R
20
20
20
S
20
T1
R1
S
LOOP
TEST
ACCESS
R1
64
P A I R 5
64
32
33
P7
1
-48 VDC PRI
J33
-48 VDC
NTWK MGMT
J30
RET
S
LOOP
TEST
ACCESS
LOOP TEST ACCESS
, allows for logical loop testing.
on P13. If the drain wire
S
pin. Only one should be
S
33
P 1 1
P A I R 2
64
1
64
33
32
P 8
P A I R 3
32
1
P A I R 1
Total Access
Chassis
P A I R 7
33
P9
64
1
64
33
32
P 1 0
P A I R 6
32
1
P A I R 8
-48 VDC SEC
P22
EXTCLK
RS485
J32
ALARM OUTPUTS
P3
P21
P1
P20
P19
P18
R21
+
–
S
+
–
S
+
+
–
–
S
A
B
A
B
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
NC NO
C
NC
P2
1
-48 VDC RET
AUX1
AUX2
B - OUT
A - OUT
B IN
IN
OUT
ACO
RMT
AUX1
AUX2
CRI-A
MAJ-A
MIN-A
CRI-A
MAJ-A
MIN-A
",
+
", "
" and drain
+
–
on the backplane.
LOOP TEST
ADMIN
J31
33
1
E D C B A
E D C B A
P15
1
P14
1
J1
D
C
B
A
1
F2
F1
10
10
10
20
8
P23
20
DSX1
30
30
TEST
ACCESS
1
T
P24
R
EXTCLK
C-IN
S
1
+
T1
40
–
R1
S
S
32
6
F4
F3
48
48
33
1
PC2A
94V-0
1181004L1
2298
CUSTOM
TELECOM
E190349
E - NET
61181001L1-5E
Advertisement
Table of Contents
