Connections
HDSL4 for General Distribution Installation and Maintenance Practice
10
61223HDSL4L2-5C
Total Access 3000 H4TU-C Edge Connector
illustrates the edge connector wiring for the Total Access 3000 H4TU-C module.
Figure 6. Total Access 3000 H4TU-C Edge Connector Wiring
Total Access 3000 Chassis Amphenol Connectors
The Total Access 3000 shelf delivers DSX-1 from the network to the H4TU-C via connectors on
the backplane labeled “Pair 7” and “Pair 8”. The HDSL4 signal is provided toward the
customer via the backplane connectors labeled “Pair 1” and “Pair 2”. Pins 1 and 33 of the
connectors Pair 7 and Pair 8 are the DSX connections for the H4TU-C in Slot 1. Pins 2 and 34
of these connectors are associated with Slot 2. Pins 3 and 35 are associated with Slot 3, and
so forth, up to pins 28 and 60 for Slot 28.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
P2, Row A
P2, Row B
P2, Row C
- 48 volt return
Interrupt Request
MUX B Receive Data
MUX A Receive Clock
MUX A Receive Data
Chassis ground
Chassis ground
HDSL4 Loop 2 Ring (facility)
SCU Control Lead
Fuse alarm
Interrupt Request Select
MUX B Transmit Clock
MUX A Transmit Clock
Test access bus Loop ring
Test access bus Loop tip
Receive DSX-1 Ring backup connection
Transmit DSX-1 Ring backup connection
Receive DSX-1 Ring normal connection
Transmit DSX-1 Ring normal connection
- 48 volt return
- 48 volt DC A
- 48 volt DC A
HDSL4 Loop 1 Ring (facility)
HDSL4 Loop 1 Tip (facility)
HDSL4 Loop 2 Tip (facility)
SCU Control Lead
SCU Control Lead
SCU Serial Interface
MUX B Transmit Data
MUX B Receive Clock
MUX A Transmit Data
Receive DSX-1 Tip backup connection
Transmit DSX-1 Tip backup connection
Receive DSX-1 Tip normal connection
Transmit DSX-1 Tip normal connection
- 48 volt DC B
- 48 volt DC B
