I\'m taking shots in the dark here. I\'d like to create a web service where eventually I send an SMS by using my own hardware. I\'m not sure what I need in order to send an
Just find an online SMS Gateway. These Gateway providers are your best bet since they have handled all the heavy lifting for you. Just utilize their API and you should be able to do whatever you want. Some of these gateways are free and some are not. I've included a short list below.
https://www.clickatell.com/pricing/message_cost.php
http://www.zeepmobile.com/
(Carrier based SMS transit) http://en.wikipedia.org/wiki/List_of_carriers_providing_SMS_transit
I'm sure there are a ton more, but this will get you started.