Butler 575
5
A N T E N N A
When the ANTENNA symbol appears on the display, this indicates that the
handset is located within the working range of the base unit. When the
handset is out of the working range of the base unit, “RANGE OUT” will be
visible on the display.
O F F H O O K
The OFFHOOK symbol appears when the hookswitch is pressed to call and
the handset and base unit are connected.
EXTERNAL CALL
The EXT symbol is used for external calls and is also displayed on all the
subscribed handsets.
INTERNAL CALL
The INT symbol is used for internal calls between handsets. It is displayed on
the corresponding handsets only.
B A T T E R Y
The BATTERY symbol is shown when the battery is almost empty and needs
to be recharged.
L O C K
The LOCK symbol is displayed when the handset is locked. The unit can only
receive incoming calls. All buttons are deactivated, except for the Power
button.
0 0 0 0 0 0 0 0 0 0 0 0 0