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La Fonera (FON 2200) serial link pinout

 .--[  ]---------------.
 |   []       FON 2200 |
 |                     |
 |                     |
 |                     |
 |                 .-. |          [PC] (via Pegelanpassung)
 |                 |o| | GND   --> GND
 |                 |o| | RX    --> TX
 |                 |o| | TX    --> RX
 |                 |o| | +3.3V 
 |                 '-' |
 |                     |
 |                     |
 |         LEDs        |
 |    O     O     O    |

USB-to-Serial Converter

I adopted a spare data cable for mobile phones, configured for Samsung SGH-E700 but the PCB: DC-U-6858(A) seems quite generic, e.g. it is offered for Siemens as well. The PCB comprises the OTi6858 chip. FWIW: not the Prolific IC, in case you get confused when Windows is looking for a "USB-UART Tx Line" device driver. A slightly more recent version is here that works with Win2K as well with Win XP)

GTD with Windows

Unfortunately my Ubuntu notebook (running kernel 2.6.20-16-generic #2 SMP) doesn't support the OTI 6858 IC out of the box and I wasn't in the mood to try this patch. (Update: problem solved, tested with 2.6.24-23-generic #1 SMP)

Serial Communication

Firmware Update

FON <--- standard ethernet cable ---> PC
  • the Ap51 needs WinPcap for low level access; the easiest way to get it is to install and confirm the additional installation for WinPcap when the setup programme asks so. Wireshark is a network sniffer (formerly known as EtherReal) that you may want to have handy anyway.
    • wireshark-setup-0.99.8.exe
    • WinPcap 4.0.2 Installer
Fonera (new version) & adopted mobile phone data cable