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A common application of the 25-pair color code is the cabling for the Registered Jack interface RJ21, which uses a female 50-pin miniature ribbon connector, as shown in the following table. The geometry of the pins of the receptacle (right hand image) corresponds to the pin numbers of the table.
This diagram was created with a ... Originally uploaded as 25_pair_color_code_chart.png by ... 1A2 Key Telephone System; 25-pair color code; Color code; Twisted pair ...
The following historical mnemonics are generally considered offensive/outdated and should not be used in current electronics training: Bad boys rape our young girls but Violet gives willingly.
Unshielded twisted pair (UTP) cables are found in many Ethernet networks and telephone systems. For indoor telephone applications, UTP is often grouped into sets of 25 pairs according to a standard 25-pair color code originally developed by AT&T. A typical subset of these colors (white/blue, blue/white, white/orange, orange/white) shows up in ...
DIN Standard DIN 47100 regulated the color-coding for the identification of cores in telecommunication cables. The standard was withdrawn without a replacement in November 1998, but remains in widespread use by cable manufacturers. The isolations of the several wires in a cable are either solidly colored in one color, or striped lengthwise in ...
Since the sets are ordered, an orange (color 2 in its set) with a yellow (color 4) is the color scheme for the 4·5 + 2 − 5 = 17th pair of wires. If the yellow is the more prominent, thicker stripe, then the wire is a tip conductor connecting to the pin numbered 25 + the pair #, which is pin 42 in this case.
A cable terminated according to T568A on one end and T568B on the other is a crossover cable when used with the earlier twisted-pair Ethernet standards that use only two of the pairs because the pairs used happen to be pairs 2 and 3, the same pairs on which T568A and T568B differ. Crossover cables are occasionally needed for 10BASE-T and ...
Chuq, this page is about the 25 pair colour code and is correct for Australia as per Appendix B at [S008:2006 (as at April 2006), what you have lsited above is also correct for 20 pair colour code. There are also listed there 2 pair (quad), 3 pair telephone cable colour codes, 1 - 5 pair cable colour codes, 10 pair, and optical fibre colour codes.