I have RH9 setup as a dial-in server using D-link external modems for ttyS0 and ttyS1. It was working perfectly until last month. The problem is...sometimes when the user logged in and they're connection to the server was interrupted abnormally, the client's phone hang up ok. But in the server side, the phone line isn't clear. When you do a 'who' command in RH9, it seems that no one is using the port and the modem's CD light is off. But when you dial the number again, it says "Sorry, this line is not accessible at the moment'. And I have to reset the modem by turning it on and off once for it to be accessible again, so that it can accept calls again. I looked at the /var/log/messages and found this error message again and again....
Init chat failed, exiting...: Interrupted system call
failed in mg_init_data, dev=ttyS0, pid=708
I can't figure out the problem. Is it the phone line, RH9 config of mgetty or pppd or the modem itself.
Can someone enlighten me.