The services provided by professionals in particular field. For example, a company may charge a certain sum of money for the certain tasks their consultant accomplished for the company who ordered the service.
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.