How to create an SMS gateway?

Question

I know there are lots of 3rd party sites to send bulk SMS via the internet, but if I wanted to create one myself, how would I go about it? I know how to create an SMS gateway us

Answer 1

You'll need to talk to an SMSC with an SMPP protocol. You can also use Kannel, it provides nice features to work with different types of SMSC including GSM modems as well as send-sms HTTP service and more.