When on a call and another call comes in, you will see the Caller Id information on the display. In addition, you will see the Swap on the display and the swap key blinking. Select the Swap Key to switch to the waiting call.
To return to the other call, press Swap again. You can use Swap to
Toggle between the calls.
Note: Call Waiting Feature must be set up with your telephone service in order to access / use this feature.