root@palmld:~$ ./serial_erhtc
start...
read 1 : 00
wrote 8 : 02 05 00 00 03 01 d2 02
read 8 : 02 05 00 00 23 01 e1 21
wrote 10 : 02 07 00 00 00 31 09 00 e2 3b
read 25 : 02 04 00 81 80 a4 e1 02 04 00 01 80 68 6d 02 08 00 00 20 31 09 00 01 3f b5
wrote 10 : 02 07 00 00 00 01 09 00 4c bd
read 18 : 02 04 00 82 80 cc cb 02 08 00 00 20 01 09 00 02 56 cb
Setting line discipline to GSM driver ...
DONE!
Starting dumb terminal
DUMB> ATE0;V0
WROTE: 0x41 0x54 0x45 0x30 0x3b 0x56 0x30 0x0a  - SUM 8