Gsm /gprs

[venkatraju]

Hi all,

i had been working on the tc63i gsm/gprs modem!!!!!!

i had written a test c code for sending and receiving AT commands.

it's working fine i am able to get IP address also.

but if i use pppd,chat tool to create ppp0 network file i got following error

Connection terminated.
Serial connection established.
using channel 10 Using interface ppp0 Connect: ppp0 <--> /dev/ttyACM0 tcflush failed: Bad file descriptor

bellow i had attached my script files

please suggest me !!!!!!
thanks in advance