Howto build your E1<>RJ45 cable

We used a Cat-7 Ethernet cable to build our E1<>RJ45 cable to connect the BTS with the BSC.

Things you need: * one Cat-7 Ethernet cable * two twinax plugs (BR2) * some heat shrink tube * soldering-iron * multimeter (optional) * a sharp knife :)

=== Step-by-step guide ===

'''One:'''

Take your cable and cut off one of the RJ45 connectors. Now use a ruler and make a slice so you can strip around 15 cm from your cable.

Image(IMG_0960-1.JPG, 15%) Image(IMG_0960-2.JPG, 15%)

'''Two:'''

Split the wires from your cable. We need pin 1 and 2 for '''RX''' (green white/green) and pin 4 and 5 for '''TX''' (blue white/blue), you can use a multimeter if you are not sure that you got the correct wires. Cut off the other wires we do not need them (yet).

Image(IMG_0960-4.JPG, 15%) Image(IMG_0960-5.JPG, 15%) Image(IMG_0960-7.JPG, 15%)

'''Three:'''

Sort your twinax plugs to make sure you build them in the right order. ;)BR
We used heat shrink tube to stabilize our cable around the plugs.

Image(IMG_0960-9.JPG, 15%) Image(IMG_0960-11.JPG, 15%) Image(IMG_0960-7.JPG, 15%)

'''Four:'''

Now you can put everything on the first part of the cable and assemble it. Use a soldering-iron to fixate the each of the two pins of the plug with your wires.

Image(IMG_0960-9.JPG, 15%) Image(IMG_0960-11.JPG, 15%) Image(IMG_0960-12.JPG, 15%) Image(IMG_0960-17.JPG, 15%)

'''Five:'''

Repeat step '''three''' and '''five''' to build the second plug.

Image(IMG_0960-19.JPG, 15%)

'''Done.'''