Ericsson Dialog 4222

External Follow-me
If external Follow-me is allowed, you can have all calls to your extension diverted to an external number of your choice. During Follow-me, your phone can still be used for outgoing calls and you will hear a special dial tone when you lift the handset.

Order
Dial and enter the digit or digits to get an external line and enter the external line.
*22#EXT-Follow-me-NUMBER#[Press C]

Cancel
Dial #22#[Press C]

Ref:
User_Guide_Dialog_4222