Modem Installation And Maintenance Practice

Section 3, Installation - Ground and Power Connections
61179605L5-5B 3-11
SHDSL Connection
The Total Access 1240 provides 24 SHDSL ports on one 50-pin male amphenol connector (see
Figure 3-9). The 24 SHDSL links can be physically bonded in pairs. A maximum of twelve
4-wire SHDSL links are supported per module. SHDSL links are bonded in odd and even
sequential pairs. For example, SHDSL links 1 and 2, 3 and 4, or 9 and 10 can be linked to
form 4-wire SHDSL links.
Figure 3-9. SHDSL 50-pin Male Amphenol Connector
To connect the SHDLS ports, perform the following steps:
1. Connect a 25-pair female-ended amphenol connector to the male-ended amphenol
connector, labeled
SHDSL.
2. Tighten the screw (normally provided with the amphenol connector attached to the cable)
on the right side of the amphenol connector.
3. Use the cable tie (provided) placed through the tie bracket (provided) to secure the left side
of the amphenol connector.
The pin assignments for the SHDSL cable pinouts are shown in Table 3-3.
Table 3-3. SHDSL Cable Pinouts
Pair Number Pins Pair Number Pins
1 1, 26 14 14, 39
2 2, 27 15 15, 40
3 3, 28 16 16, 41
4 4, 29 17 17, 42
5 5, 30 18 18, 43
6 6, 31 19 19, 44
7 7, 32 20 20, 45
8 8, 33 21 21, 46
9 9, 34 22 22, 47
10 10, 35 23 23, 48
11 11, 36 24 24, 49
12 12, 36 25 25, 50 Not used
SHDSL Connection