How do I assign my Twilio number to my SMS application?
When an SMS message is sent to your Twilio number, Twilio will ask your SMS application for instructions on how to respond. Each Twilio number has a SMS Request URL parameter that you can set to your application’s publicly accessible URL. You can set the SMS Request URL for your Twilio number in your account portal.
First, log into your account portal and go to your Manage Numbers page. Click on the red Twilio number that you want to assign to your application.
Once you click on the number, you will be taken to the settings page for the number. There you can edit the SMS Request URL to the URL that points to your application.
Don’t forget to click Save!