You can switch between two connections using the hold and retrieve function.
1. Set up an active call and a call on hold.
2. Press the Consultation key R twice or the consultation key "R" and the number "2".
The active call is put on hold and the call on hold is activated.
3. To terminate the active call, you must press the Clearing key. The connection to
the active call is terminated. The call on hold automatically becomes the active call.