[self]

This is what I do -- I have one cheap GSM modem attached to an Ubuntu box, and I use stuff from the gsm-utils package to both send and receive messages. My problem is that I can't keep the system up 24x7; it's only active during working hours, five days a week.

[pbrumm]

You should try gammu, it has great documentation and support for modems. Using cell phones seems spotty on whether they will support sending or not, but I think that is independent of the software.

http://wammu.eu/gammu/

also I chose to get a bigger 8 port modem from here.

http://www.bailing88.com/en/product_view.asp?hw_id=119

I definitely recommend their service.

works great with the latest kernel's and is usb.

seems to price out at about $50 a modem independent the size of the modem pools or a single.

[iwr]

This looks interesting, I'll check it out!