Alcatel Temporis IP800 Administrator's Manual page 111

Then enter the BLF List Code in the BLF List Code field.
Click the Confirm button to save.
To assign the key as BLF List:
Choose Phone-> Function Keys -> Line Key or Memory Key, choose one of the keys on
which you want to make the assignment. From the pull-down menu in the Type field,
select BLF List from the list.
In the "Line" field, select a line for which to apply this key.
Press Confirm button to save the changes.
Prefix
When you press a key in which prefix function has been set up, the phone will
automatically dial the prefix and you will only have to dial the rest of your
correspondent number to call him out. Prefix can only be assigned to the line keys.
To assign the key as prefix:
Choose Phone-> Function Keys -> Line Key, choose one of the keys on which you want
to make the assignment. From the pull-down menu in the Type field, select Prefix from
the list, and enter the number you want to show up on the dial interface in the Value
field.
Press Confirm button to save the changes
Zero-Active
When you press a Function Key which has been set as Zero-Active, the phone will
launch Zero-Active interface. Please check section "Zero-Active" section in Maintenance
Tasks chapter for more details.
To assign the key as Zero-sp-touch:
Choose Phone-> Function Keys -> Line Key or Memory Key, choose one of the keys on
which you want to make the assignment. From the pull-down menu in the Type field,
select Zero-Active from the list.
Press Confirm button to save the changes
ACD
ACD (Automatic Call Distribution) aims at having incoming calls distributed
automatically to different extensions according to their availability stages. To perform
this function, you have to assign previously this feature to a Line key. This feature is
supported by some specific servers. Please check with your service provider or PBX
vendor for details.
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Temporis IP800 Administrator Guide Ed1.0