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Connectors and Pin Assignments
DSL Ports Connectors
44
BitStorm 4800 Express Model 4821-A2 Installation Guide
The 50-pin RJ21X Telco connectors labeled DSL Ports 1–24 and (on the
48-port model) DSL Ports 25–48 provide the 2-wire loop interface from each
DSL port to the POTS splitter. The Canadian designation for this connector is
CA21A.
Table 5
lists the pin assignments for these interfaces. Note that Pins 25 and 50
are not used.
Table 5: DSL Connector Pinouts
Connector Pins
DSL Port
(Ring, Tip)
1 or 25
1, 26
2 or 26
2, 27
3 or 27
3, 28
4 or 28
4, 29
5 or 29
5, 30
6 or 30
6, 31
7 or 31
7, 32
8 or 32
8, 33
9 or 33
9, 34
10 or 34
10, 35
11 or 35
11, 36
12 or 36
12, 37
13 or 37
13, 38
14 or 38
14, 39
15 or 39
15, 40
16 or 40
16, 41
17 or 41
17, 42
18 or 42
18, 43
19 or 43
19, 44
20 or 44
20, 45
21 or 45
21, 46
22 or 46
22, 47
23 or 47
23, 48
24 or 48
24, 49
1
25
26
50
02-17151
4821-A2-ZN21-30
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