This section describes the proactive commands and the functions they provide to the client applications.
Proactive commands are used by the Integrated Circuit Card (ICC) to instruct the phone to do various tasks. A proactive command is always associated with a proactive command number. A response to every proactive command is returned as a terminal response with the same proactive command number.
The proactive commands allow the client applications to:
Display text or icon to the user.
Create a menu and provide a list of options.
Get one or more characters from the user.
Instruct the device to play tone as a notification.
Request the telephony system plug-ins to send data to the network as a SMS message, supplementary service commands, unstructured service data and DTMF tones.
Clients can implement power management of the ICC.
Clients can access the information from the ICC.
Request the telephony system to create and close channels for the client applications.
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