Template:Registered jack


Position	Pair	T/R	±	RJ11	RJ14	RJ25	Twisted pair colors	25-pair colors^[A]	Old colors^[B]	German colors^[C]	Australian colors	Dutch colors^[D]	Diagram
1	3	T	+	Does not appear	Does not appear	T3	white/green	white/green	white	pink	orange	Does not appear	6P6C connector showing the location of pin 1
2	2	T	+	Does not appear	T2	T2	white/orange	white/orange	black	green	red	orange
3	1	R	−	R1	R1	R1	blue	blue/white	red	white	blue	red
4	1	T	+	T1	T1	T1	white/blue	white/blue	green	brown	white	blue
5	2	R	−	Does not appear	R2	R2	orange	orange/white	yellow	yellow	black	white
6	3	R	−	Does not appear	Does not appear	R3	green	green/white	blue	gray	green	Does not appear

^ Established in the 1950s for polyethylene-insulated conductor (PIC) cable.Horn, F. W. (October 1958). "'Even-Count' Cable" (PDF). Bell Laboratories Record. 37 (5): 208–217. Retrieved October 13, 2022.
^ While the old solid color code was well established for pair 1 and usually pair 2, there are several conflicting conventions for pair 3 (and sometimes even pair 2). The colors shown above were taken from a vendor of silver satin flat 8-conductor phone cable that claims to be standard. 6-pair solid (old) bellwire cables previously used by the Bell System use white for pair 3 tip but some vendors' cable may substitute orange for white. At least one other vendor of flat 8-conductor cable uses the sequence blue, orange, black, red, green, yellow, brown and white/slate.^{[citation needed]}
^ This color scheme originates in the (withdrawn) national standard DIN 47100. The scheme shown here is the correct color code for interfacing with the RJ connector standards.
^ "(nl) Support document for the 'PTT norm 88'" (PDF). Watel (in Dutch). p. 8. Archived (PDF) from the original on 2016-10-08.