NEC i-Series Alphanumeric Display Feature Handbook page 26

Call Forwarding
To activate or cancel
Call Forwarding
20
3. Dial destination extension, Voice Mail
master number or press Voice Mail key.
(Cont'd):
Group pilot number. Once you forward,
only the destination user can place an
Intercom call to you.
4. Dial Call Forwarding type:
2 = All calls
3 = Outside calls only
4 = Intercom calls only
5.
(Station) Programmable Function Key
flashes when Call Forwarding is
activated.
You cannot forward to a Department
to hang up (if you dialed
in step 1).
Your DND or Call Forwarding