AASTRA 4225 for MX-ONE Telephony Switch - Manual (Page 90)

Other Useful features
Dialog 4223 Professional/Dialog 4225 Vision 90
Immediate Speech Connection
You automatically answer a call without lifting the handset or pressing
any keys. The feature can be permanently active or activated by use of a
function key (preprogrammed by your system administrator).
Permanently active
Program the ringing option with “Immediate Speech Connection with
one ring signal”, option 6, on the Line key. See section “
Programming
of ring signals ” on page 102.
Activated on a function key
Automatic answer
Ô
Press to order or cancel.
Note: The function key is preprogrammed by your system
administrator.
The incoming call is signalled with one ring signal. When the key lamp
is on you can use this feature.