SLIP transfert between LPC2468 board and Windows XP using a serial link

Hi,

I'm trying to transfert file from my PC on Windows XP to a board based on a LPC2468.
I've modified the sample TFTP_demo. I've suppressed ethernet driver and added null_modem.c an serial_LPC2400.c driver to manage a serial link
I've created a serial network connection as it's explained in RL-ARM User's Guide:RL-TCPnet

The board is sending "CLIENT" but my PC send nothing when i'm trying to connect to the board

Could you help me please

thanks for all

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