SMC Networks VDSL2 - Manual (Page 72)

C
ABLES
B-8
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.
Figure B-4 RJ-21 Port Pins
The VDSL Line connector is designed to aggregate 16 VDSL ports. The
following table shows the pin assignments.
Table B-3 RJ-21 Port Pin Assignments (PBX/MDF connector)
Pins Circuit Pins Circuit Pins Circuit Pins Circuit
48,49 1, Ring/Tip 42,43 5, Ring/Tip 36,37 9, Ring/Tip 30,31 13, Ring/Tip
22,23 2, Ring/Tip 16,17 6, Ring/Tip 10,11 10, Ring/Tip 4,5 14, Ring/Tip
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
12, Ring/Tip 1,2 16, Ring/Tip
Table B-4 RJ-21 Port Pin Assignments (VDSL Line connector)
Pins Circuit Pins Circuit Pins Circuit Pins Circuit
48,49 Port 1 42,43 Port 5 36,37 Port 9 30,31 Port 13
22,23 Port 2 16,17 Port 6 10,11 Port 10 4,5 Port 14
45,46 Port 3 39,40 Port 7 33,34 Port 11 27,28 Port 15
19,20 Port 4 13,14 Port 8 7,8 Port 12 1,2 Port 16
1 25
female
connector