Making RJ-11 and RJ-45 cable

Name: Ian

Lab: Report 3

Instructor : Joyce Quist

Date: September 28, 2004

Rev. 1.4 (fixed error with RJ-45 stating it was a crossover cable)



Report



RJ-45 - the straight-through cable







On Tuesday, Joyce assigned a lab report on cables. Each of us did cables individually. One cable was the straight-through cable which is a RJ-45 patch cable in discus. First, I must have a clamping tool to came the proper terminate jacks from the EIA/TIA/ANSI 568-B standard. I need to make sure my cable is no shorter than 10 feet so I took my finger, and hand and measured out approximately 10 feet.



For crossover cable I had to take the jacket stripper, and take the correct amount of jacket off so I could untwist the twisted pair wires. I did some extra clipping to make sure the wires were straight thus they would fit in the termination jack equally. What I used as follows from left to right before I insert them into the termination jack (sometimes called a plug) facing down when I clamp it down a few times. I sure hate for it to come off and have to redo it.



[ Sequence for straight-through cable ]



Orange white

Orange

Green white

Blue

Blue white

Green

Brown white

Brown



Since the opposite end of the cable should have orange white on the left side also and it doesn’t matter if the cable is twisted since the wires are going to end up in the same configuration on each end according to EIA/TIA/ANSI 568-B.



RJ-11 (British Naval Connector)







For the white flat cable, untwisted pair (UTP) I believe, this is very easily. I could easily strip the wire off because all I had to do is make a cut in the cable. Afterwards, I took my finger nails, and peal the ripper off on both sides. If my wires weren’t lengthy enough than all I had to do is make another cut and peal more rubber jacket off without harming the twisted pair wires. I made sure the cable was flat with Orange White wire on the left side and lined up like above, and paid attention to detail so all the wires would fit firmly into the termination jack and clamp it down with the special CISCO clamping tool. The RJ-11 can use the RJ-45 crossover terminator jack. As for the opposite end, I made sure the end of the cable was not twisted, and once I have all the wires in the order I want them, then I simply put another termination jack/plug onto other end so it would mirror my first end exactly. For flat cable, there is no reason to know the color order of the cable since it’s already in color order when it was made.







The last part (which I didn’t have a chance to do) is connecting both ends to the wire tester and run the Map-test test option on the wire. This should discover if the wire has any open wires (which aren’t connected to the tip of the termination jack), loss of signal (means that there is more attenuation in the wire than there should be), maximum bandwidth (peak Mbit or Gbit transfer rate), if all the wires are open (the cable is no good now). This concludes my lab report.



If the Map test showed no errors than this cable should pass.