If you hear another phone ringing, there are a number of ways that you can answer the call if you know the user, group or line being called.
To make a call Pickup: (1403/1408/1416)
1.If already on a call, end the call by pressing Drop or put it on hold by either pressing Hold or pressing the button which the call is on.
2.Press an idle Intercom or Call Appearance button.
•To pickup a call ringing at a particular extension:
Dial 6 followed by the extension number at which the call is ringing or parked.
•To pickup the longest waiting call in a pickup group:
Dial 66 followed by the pickup group number (1 to 4).
•To pickup the call ringing on a particular line:
Dial 68 followed by the two digit line number.
3. You can continue the call handsfree (not on 1403 phones) or switch to using the handset or headset.
To create a call pickup button: (1408/1416)
1.Press the Admin soft key on the display.
•If you access phone administration during a call, only the 
SPEAKER, 
MUTE and 
HEADSET buttons still affect the connected call.
2.Use the 
up or down 
arrow buttons to scroll to Telephone Programming. Press Select.
3.Press the programmable button you want to change. Alternatively:
•Use the up or down arrows to scroll to Button Programming. Press Select.
•At the Button: prompt press the button to edit or enter from the button number.
4.The current setting of that button is displayed.
5.Press Program and either press Intercom 1 or use the up or down arrow buttons to scroll the display to Call Pickup and press Select.
6.At the Endpoint: prompt enter 6 followed by the target extension.
7.The current setting of the button will now be Call Pickup followed by the target extension number.
•Exit phone administration by pressing the 
PHONE button. Alternatively use the Back button to move to another menu.
To use a call pickup button: (1408/1416)
1.Press the Call Pickup programmed button for the specified extension number. You are connected to the call that was ringing the specified extension.