Call waiting with “Caller ID” uses a special signal in
order to warn you about an incoming call, during another call there are shown the
name and number of the calling subscriber on the display. The function also
allows switching between two calls.
This program allows you to control the use of the telephone, how many minutes you talk, where you have called, what amount of data is downloaded and so on. Thus, it helps you to fit in the framework of the contract conditions. The program is mainly used in mobile phones.