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A. Connectors and Pin Assignments
A-2 January 2004 2600-A2-GN20-10
DSL Ports and POTS Splitter Connectors
The 50-pin RJ21X Telco connector labeled DSL Ports 1–24 provides the 2-wire
loop interface from each DSL port to the MDF for CO applications, or the
in-building wiring for customer premises applications. (The Canadian designation
for this connector is CA21A.) The connector is labeled POTS 1–24.
Ta bl e A -1 lists the pin assignments for each of these interfaces. Note that Pins 25
and 50 are not used.
Table A-1. DSL Connector Pinouts
DSL Port
Connector Pins
(Ring, Tip)
11, 26
22, 27
33, 28
44, 29
55, 30
66, 31
77, 32
88, 33
99, 34
10 10, 35
11 11, 36
12 12, 37
13 13, 38
14 14, 39
15 15, 40
16 16, 41
17 17, 42
18 18, 43
19 19, 44
20 20, 45
21 21, 46
22 22, 47
23 23, 48
24 24, 49
25
02-17151
1
50
26