Basic wiring information
Most of the following info was borrowed from
Hubbell's
web site under
Technical Information.
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This is an RJ48
(if you are a telecomm person)
It's also an RJ45
if you are a datacomm person
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NOTES
- 4 pair UTP cables come with these colors: blue, orange, green, and brown
- pairs are usually a color + white
- the white wire should be in the lower wiring position, or tip
- the colored wire is referred to as ring.
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T568A & T568B wiring configurations
We use T568B
NOTES
- The pair numbers stay the same color in both configurations.
- The pair locations are different.
- The pair configurations are the same. E.g. 1+2, 3+6, 4+5, 7+8
- Notice how the middle two wires are a pair, then the next two (3+6).
- Pair 1 is 4+5 and blue in both.
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Common connector pin-outs
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10baseT 100baseT |
4/16MB Token Ring Note the tip/ring reversal on pair 1 |
CDDI FDDI on copper |
56k WAN |
T1 WAN |
25 pair colors
T1 Network Adaptor
Some CSU/DSU's have a DB15 network connection instead of an RJ48. These
should be wired as follows:
Color |
RJ45 |
Description |
DB15 |
Blue |
1 |
Receive Tip |
11 |
Orange |
2 |
Receive Ring |
3 |
Red |
4 |
Send Tip |
9 |
Green |
5 |
Send Ring |
1 |