Press the OK key to select the active communication partner (function switch curr. num). During splitting, the other communication partner who had been active up until now is put on hold in the backgrounds listening to hold music. During a conference call, the status of the call does not change at first. Pressing the OK key during a conference call only activates the communication partner (function switch curr. num) in relation to carrying out the next function.

Your system telephone shows possible functions during query calls in the lower line of the display. Press the arrow keys to scroll through the various functions. Press the OK key to initiate the function currently displayed.