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C
ABLES
RJ-21 Port Pin Assignments
The RJ-21 ports are designed to aggregate 24 POTS/VDSL lines, although
only 16 lines are implemented for this switch. Each wire pair must be
attached to the RJ-21 connector in a specific orientation detailed below.
The following tables show the pin assignments.
Table B-3 RJ-21 Port Pin Assignments (PBX/MDF connector)
Pins
Circuit
48,49 1, Ring/Tip 42,43 5, Ring/Tip 36,37 9, Ring/Tip
22,23 2, Ring/Tip 16,17 6, Ring/Tip 10,11 10, Ring/Tip 4,5
45,46 3, Ring/Tip 39,40 7, Ring/Tip 33,34 11, Ring/Tip 27,28 15, Ring/Tip
19,20 4, Ring/Tip 13,14 8, Ring/Tip 7,8
The VDSL Line connector is designed to aggregate 16 VDSL ports. The
following table shows the pin assignments.
Table B-4 RJ-21 Port Pin Assignments (VDSL Line connector)
Pins
Circuit
48,49
Port 1
22,23
Port 2
45,46
Port 3
19,20
Port 4
B-8
25
Figure B-4 RJ-21 Port Pins
Pins
Circuit
Pins
Circuit
42,43
Port 5
16,17
Port 6
39,40
Port 7
13,14
Port 8
Pins
Circuit
12, Ring/Tip 1,2
Pins
Circuit
36,37
Port 9
10,11
Port 10
33,34
Port 11
7,8
Port 12
1
female
connector
Pins
Circuit
30,31 13, Ring/Tip
14, Ring/Tip
16, Ring/Tip
Pins
Circuit
30,31
Port 13
4,5
Port 14
27,28
Port 15
1,2
Port 16
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