Ericsson Dialog 4220 Lite - Additional Directory Number

Other Useful Features
Dialog 4220 Lite/Dialog 4222 Office70
Additional Directory Number
You can be assigned (preprogrammed by your system
administrator) one or more Additional Directory Numbers (lines) on
free function keys.
To answer, make calls and use features on the additional directory
lines, use the same procedure as for the Triple Access Lines,
unless you have other instructions. However, you have to press the
additional Line key after lifting the handset.
Example:
To make a call on an additional directory line:
u Lift the handset.
Additional line Ô Press.
Note: Function key preprogrammed by your system
administrator.
z Dial the extension number.