It is the business practice of sending all clients' billing info to a separate company, who then does everything for you. It also allows a company to cut down on time and human resources spent on administrative tasks.
A mobile dialer or a soft dialer is an application allowing the users of the cell phones to make VoIP calls via a mobile device with Internet connection. Such a thing of making call this way is called mVoIP or Mobile VoIP. This mobile dialer can be used by various companies trying to reduce the operational expenditures or by individual who just want to save extra money on the phone bills.