Modem
Trouble shoot modem GSM with smstools
13-Jan-2009 13:19:59
USB2Serial adpater cables, based on Prolific PL2303 chip
Digi Etherlite ethernet to serial
Equinox multi Serial PCI cards
Note 1)
You must cut pin 4 (wich is DTR) of the serial connector because the phone disables AT command set if the pin is connected and active. The GM22 does not support ascii mode. Mode=new and baudrate=9600 are the correct settings.
Note 2)
Replace put_command("AT+CREG?\r"...with put_command("AT+CREG?\n"... in modeminit.c. Set baudrate=115200 and mode=new. This phone was reported as unstable by one user.
Note 3)
Enter "memory_start=0" into the config file. If you removed the PIN protection from your SIM card, this modem says that the PIN is locked, which is not true. Remove the pin=1234 line from the config file, then the program will ignore that instead of stopping with an error message. The linux driver for 3G/UMTS version can be loaded with the command "modprobe usbserial vendor=0x0af0 product=0x5000". I assume that loading the driver works similar for the other versions of that card. The device name is /dev/usb/ttyUSB0.
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