The control key enables you to navigate the menus and input fields, and also to call up certain functions depending on the situation. |
Open the directory | Press briefly |
Open the list of available online directories (if available and configured) | Press and hold |
Open the main menu | or |
Open company directory (if available and configured) | |
or: Open the list of handsets |
Confirm a function |
Open the directory | |
Mute the microphone | |
Open company directory (if available and configured) | |
or: Initiate an internal consultation call | |
Adjust the loudspeaker volume for receiver and handsfree mode |