Use call waiting
When you have an ongoing call, the new call is signalled by a sound.
Press Answer.
Press Answer.
Swap calls
The active call is displayed at the centre of the display.
Press Switch to this call to activate the call on hold.
Press Switch to this call to activate the call on hold.
End active call
Make sure the call you want to end is active.
Press End call.
The active call is ended and the call on hold is automatically activated.
Press End call.
The active call is ended and the call on hold is automatically activated.
Exit
Press End call.