SMC Networks VDSL2 manual RJ-21 Port Pin Assignments, Pins Circuit

CABLES

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.

25	1	female
		connector

Figure B-4 RJ-21 Port Pins

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

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	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

B-8