2. System Requirements
You will need a GNU/Linux system with a kernel having PPP support pre-compiled. I have tested that both the 2.4.29 kernel and the 2.6.x series kernel work fine. Performance seems to be better using a 2.6.x kernel. If you see that some kernel modules are missing then configure and recompile the kernel with PPP support.
Check with Section 4 for the configuration of PPP.
A connecting serial cable which has on one end an RJ-45 connector which plugs into the phone and on the other end has an RS-232 serial connector which is plugged into the serial port of the PC.
I built my cable myself. I used a CAT 5 cable which has four pairs of UTP copper. CAT 5 cable is the same cable which is used for networking your system to a LAN. While you can use any type of cable, CAT 5 will assure a good quality of the signal that is sent over the wire. A typical configuration looks like this:
RS-232C Serial Female connector, which is plugged into the PC:
___________________ \ / \ 5 4 3 2 1 / \ 9 8 7 6 / \___________/ |
Now let's start with the PIN Configuration
PIN 1 - White Brown cable
PIN 2 - Blue cable
PIN 3 - White Green cable
PIN 4 - Green cable
PIN 5 - White Blue cable
PIN 6 - Brown cable
PIN 7 - White Orange cable
PIN 8 - Orange cable
PIN 9 - Leave empty (we are only using 8 pins)
 | Serial connection details |
|---|---|
Three strings would be enough for a serial connection, but it turned out that the signal is better when you use 5. The other strings are used for extra rigidness and support of the cable. |
Now on to the RJ-45 connector, which is plugged into the WLL Phone RJ-45 jack:
[8 7 6 5 4 3 2 1] ---- - |
1 - White Orange
2 - Orange
3 - White Green
4 - Blue
5 - White Blue
6 - Green
7 - White Brown
8 - Brown
 | How to hold the connector |
|---|---|
If you are confused as to which way to hold the connector, make sure that you are holding the connector in such a way that its notch pin is facing towards the floor and that the open portion (portion from where the wires enter) is facing away from you. |