To forward your Grandstream Phone, follow the directions below. You can forward calls to a cell phone, land line, or to another extension at your office:
Press the ForwardAll softkey on the bottom of your phone's idle screen.
Press and hold the Backspace key to clear the previous entry, if necessary.
Dial the number you want to forward calls to and press OK.
Cancel Call Forwarding
Press the CancelFwd button on your phone's idle screen to cancel call forwarding.