Philippe Vouters wrote: > Dear Tapan, > > Could you try the following ? This may crash or hang your system. If it > does not, send me the dmesg output > > [root@victor intel-536-537]# stty -a -F /dev/modem > speed 115200 baud; rows 0; columns 0; line = 0; > intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; > eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt > = ^R; > werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; > -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts > -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon > -ixoff > -iuclc -ixany -imaxbel -iutf8 > opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 > vt0 ff0 > isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop > -echoprt > echoctl echoke > > - > http://vouters.dyndns.org:8080/ > Philippe Vouters (Fontainebleau/France) > > > > Dear Philippe, When i executed stty -a -F /dev/modem it did not hang. However it did not give output matching yours. Here is the output - stty: /dev/modem: Bad address This happened for the first time. The second time i executed the same command it gave a segmentation fault. And whem i executed the command, I got correct output. Here is the output speed 19200 baud; rows 0; columns 0; line = 0; intr = <undef>; quit = <undef>; erase = <undef>; kill = <undef>; eof = <undef>; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = <undef>; rprnt = <undef>; werase = <undef>; lnext = <undef>; flush = <undef>; min = 1; time = 0; -parenb -parodd cs8 -hupcl -cstopb cread clocal -crtscts ignbrk -brkint ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany -imaxbel -iutf8 -opost -olcuc -ocrnl -onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt -echoctl -echoke Then when i executed efax, it also started working correctly. Thanks for helping me out. However i would like to understand what happened when it started working without any editing