You may be able to change your 'forward unconditional' settings using the Features menu.
1.Press the Features soft key if shown. To do this during a call, press the 
PHONE key and then press the Features soft key.
2.Use the up and down cursor keys to highlight Forward. Press Select.
3.Use the up and down cursor keys to highlight Forward Unconditional. Press Select.
4.The screen will display your current 'forward unconditional' settings.
•To Switch Forward Unconditional On/Off
Highlight Fwd Unconditional. Press On or Off to change the current setting. If no destination is currently set when you switch 'forward unconditional' on, the display will jump to the destination field.
•To Select Which Calls as Forwarded
Highlight Call Type. Press Change to see the different options. When the required option is displayed press Save. The options are External Only, External and Group, Non Group Calls and All Calls.
•To Set the Forward Destination
Highlight Destination. Either press Edit and enter the number required or press To VM for the 'forward to voicemail' option.
•If you select Voicemail as the destination, you will need to switch 'forward unconditional' off in order to cancel it and enter a new destination.
Access Control
Your system administrator can configure whether you can access this menu option. See Menu Access Control.