SafiServer is an engine that powers the applications (called Saflets) created using SafiWorkshop. SafiServer uses these applications to control communications (i.e. Asterisk) along with a multitude of other applications (database, email, etc).
Web Callback Portlet is a portlet to be used with Liferay portal (other JSR 186 compliant portals might also work).
Customers are entering information into a form and are put intouch, via phone, with a customer representative.