VTiger CRM is a customer relationship manager that helps every company to grow very high in the sales department. This magnificent tool helps users to keep track of the inventory and the status of all implemented sales processes and activities; perform very efficient sales management; keep track of all the quotes, invoices, marketing, and support ticket system; and much more.

We could even write a book about VTiger and its implementation in any enterprise. For this recipe, we will just focus on the integration between Elastix (Asterisk) and VTiger CRM.

VTiger CRM's official website and documentation is available at: https://www.vtiger.com/crm/ and https://wiki.vtiger.com/index.php/Main_Page.

For this section, we will set a screen popup for any incoming call. Irrespective of whether we are logged in a queue as an agent or not, this pop-up screen will display the caller ID of any incoming call, and if this caller ID matches any of the caller IDs stored in our...