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.
Notification about the incoming calls, addressed to your land line or
office phone, coming to your cell phone. For instance, if you had a call to the
office at the moment when you were unavailable, a notification about the missed
call will come to your mobile phone.