[En-Nut-Discussion] PPP and TCP/IP

[Iker Uribesalgo López]

Hi,

    I am working in a project about TCP/IP over GPRS and over Bluetooth 
for a microcontroller Atmel AVR. I have found several implementations of 
TCP/IP stack for Atmel but all uses an Ethernet interface to 
communicate, included Ethernut Nut/Net. I would need to find an 
implementation of the PPP protocol that will work in Atmel AVR to 
comunicate over serial port to the modem (in the case of GPRS). Someone 
knows some free implementation of protocol PPP?
    I have read something related to PPP in this list makes a pair of 
day, what about this?

Thanks in advance,
Bye.