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A. Connectors and Pin Assignments
A-2 July 2004 4821-A2-GN21-10
DSL Ports Connectors
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 A -1 lists the pin assignments for these interfaces. Note that Pins 25 and 50
are not used.
Table A-1. DSL Connector Pinouts
DSL Port
Connector Pins
(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
25
02-17151
1
50
26