AstCallBack is an application running for iPhone allowing to use Asterisks callback functionnality in a secure way.
The application allows the user to dial a number, get the history of previous calls but also let him access to the contact list.
When the user dials a number, the application will contact the asterisk server via https protocol, get the server the required informations and check for its answer. If the answer is correct, the server will firstly dial the phone number specified into the applications preferences. Once the user has answered the call, the server dials the second number, making a relationship between the users phone and his contacts.