MonkeyBrains.net/~rudy/example Random examples

I've crimped a lot of ethernet wires. Here is my personal refernece page.

Materials:
  • Some Cat5 cable (by the 1000 foot box it is about $60)
  • + ( RJ45 crimper and a few 'icecubes')

    •   RJ-45 crimping: Ethernet!  
    
10BaseT Ethernet:
  The most popular method of connecting computers
  to each other in the home and office.  Data
  travels at 10 Mega-bits per second (and there
  are 8 bits per byte, so 10Mb = 1.25 Mega Bytes/s).
  The RJ-45 Plug at each end is like a phone jack, 
  but wider.  The wire used is (generally) Cat-3 or
  Cat-5.  If you are running a 10BaseT network,
  Cat-3 wire is cheaper and works fine.  If you
  have 100BaseT ethernet cards installed, Cat-5 wire
  is better.  These wires have pairs of wires
  twisted together to reduce inductance, resistance,
  etc.

Straight-through:
  CRIMP 1 on both ends.
  Used to hook computers to Hubs.

Cross-Over:
  CRIMP 1  on one end and CRIMP 2 on the other.
  Used to hook one hub into another hub.
  Also used to directly connect two computers.

Tool:
  You need a crimping tool which is made for 
  crimping RJ-45 jacks.  Usually, you can find
  one that can does RJ-11 and RJ-22 as well.  
  RJ-11 is the jack size for your telephone.
  RJ-22 is the phone to headset wire.
  RJ-45 = 8 wires (10 wide, only 8 used)
  RJ-11 = 6 wire jack (with only 4 used)
  RJ-22 = 4 wire jack

Cat3 is okay for 10BaseT 
  adequate for networks with up to several dozen computers sharing a DSL line
  This wire is cheaper that cat5 wire

Distance Tip:
  If you need to run a real long ethernet cable, use
  Cat-5 and run your ethernet cards at 10Mbps instead
  of 100Mbps.  The slower speed allows the signal to
  work over longer cables.
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    Here is an excerpt from csp.com:
    CAT3:
    Intended for older network traffic and phone systems where the frequency performance is less important. Commonly, CAT3 cable is used in older 10BaseT and Token Ring network infrastructures, and for telephone premise wiring.

    CAT5:
    Ratified standard for unshielded twisted pair. Handles voice or data at 100MHz over 22 or 24 AWG wire. Used for high-speed twisted-pair networks such as 100 base-TX, fast ethernet.

    CAT5e:
    More stringent specifications than CAT5. CAT5e has a higher rating, 350Mhz vs 100Mhz for CAT 5...it also provides better performance. Cable manufacturers have improved the cabling, connectors and patch cords of regular CAT5 to provide an improved attentuation-to-crosstalk ratio (ACR), and to meet or exceed all the parameters of the CAT5e standards approved by the Electronic Industries Association/Telecommunications Industry Association (EIA/Telecommunications Industry Association) and the Institute of Electrical and Electronics Engineers (IEEE)

    CAT6:
    Category 6 is expected to support a frequency of 350MHz ... Has the CAT6 specifications been ratified yet? Who knows... more info on 1000Mbps copper networks