Aastra 57i IP Phone User Manual page 29

Keys Key Description
Line/Call Appearance key - Connects you to a line
or call. The Aastra 57i IP phone supports up to 4
line keys.
Handsfree key - Activates Handsfree for making
and receiving calls without lifting the handset.
When the audio mode option is set, this key is used
to switch between a headset and the handsfree
speakerphone.
Mute key - Mutes the microphone so that your
caller cannot hear you (the light indicator flashes
when the microphone is on mute).
Navigation keys - Pressing the UP and DOWN
arrow keys lets you view different status and text
messages on the LCD display (if there is more than
1 line of status/text messages). These buttons also
let you scroll through menu selections, such as the
Options List.
Pressing the LEFT and RIGHT arrow keys lets you
view the different line/call appearances. While in
the Options List, these keys allow you to exit or
enter the current option. When you are editing
entries on the display, pressing the LEFT arrow key
erases the character on the left; pressing the RIGHT
arrow key sets the option.
Model 57i IP Phone User Guide 21