Nortel Networks BCM50 manual Appendix a, RJ-21 telephony connector wiring chart

Appendix A RJ-21 telephony connector wiring chart 205

Appendix A

RJ-21 telephony connector wiring chart

You can connect 4 analog telephone lines, 4 analog telephony devices, and 12 digital telephones to the RJ-21 telephony connector.

Figure 79 shows the RJ-21 telephony connector on a BCM50.

Figure 79 RJ-21 telephony connector on a BCM50

Main Unit

RJ-21 telephony connector pin out

RJ-21 telephony connector

Table 34 lists the wiring details for the RJ-21 telephony connector.

Table 34 RJ-21 telephony connector wiring (Sheet 1 of 2)

						Default line
Device	Pin	Connection	Wire color	Type of device	Default DN	number
1	26	Tip	White-Blue	Analog line	—	061
	1	Ring	Blue-White
2	27	Tip	White-Orange	Analog line	—	062
	2	Ring	Orange-White
3	28	Tip	White-Green	Analog line	—	063
	3	Ring	Green-White
4	29	Tip	White-Brown	Analog line	—	064
	4	Ring	Brown-White
5	30	Tip	White-Slate	Analog telephone	233	—
	5	Ring	Slate-White
6	31	Tip	Red-Blue	Analog telephone	234	—
	6	Ring	Blue-Red
7	32	Tip	Red-Orange	Analog telephone	235	—
	7	Ring	Orange-Red
8	33	Tip	Red-Green	Analog telephone	236	—
	8	Ring	Green-Red

BCM50 Installation and Maintenance Guide