Mitel 53 Series Manual

-From the "Forwarding" screen press the soft key
labeled "Edit Default."
-On the next screen, press the soft key labeled
"Always to:", and enter the phone number of the
device you would like calls forwarded to, starting
with 8, followed by the area code and then the
phone number. 8-XXX-XXX-XXXX.
-Press OK
-Press Save
Press the blue Applications button on your
phone.
(Depending on the model, your actual phone may look a little different
than the picture shown)
Press the "Forwarding" soft key.
QCBT Mitel 53xx IP Phone Call Forwarding
Guide