Sentech MyWireless (IPWireless P1C) USB driver for the Linux 2.6 kernel:
The IPWireless driver (ipw.c) has been included in the stock Linux kernel since release 2.6.10, you should be able to attach the USB device to a computer running a modern linux kernel, and have a new ttyUSB device available.
The driver provided below offers some additional features that have not been merged with the mainline kernel.

2005/10/21 Version 0.4 released The archive : ipw-0.4.tar.gz
- open() sequence changed to toggle DTR/RTS. Seems to help to get the AT command parser back to a sane state. This should help for when the modem goes "roaming" between towers, and forgets about the AT interface.
- Added support for the modem's "passthru" console device. More info on this later.
2005/09/10 Version 0.3 released
- Updated for kernel 2.6.11
- Fixed missing spinlock init
2003/03/19 Version 0.2 released The archive : ipw-0.2.tar.gz
- First public release
- Supports kernel 2.6.0-test11