Configuration Guides
Here I am trying to collect some of your requests with the way used to solve your needs. Take in mind there can be multiple ways to do the same trick and mine cannot be the best one.
Read a number from the caller and run an AGI script using it as parameter
Change the CallerID of the extension when dialing out
Select the destination for DID based on the BLF selected on the phone
Receiving SMS and routing to an email
Configuring TWILIO SMS provider