How to set up and cancel the unconditional call forwarding of Unicom users?

Mobile phone: after this function is enabled, if you need to go to the fixed phone: **2 1*02 1+ phone number #, send it; If you need to transfer to a mobile phone: **2 1* mobile phone number #, send it; Cancel: ##2 1#

Fixed telephone: After this function is enabled, if it needs to be enabled or cancelled, it needs to be set on this machine. Enable: *57* Transfer phone number # Cancel: #57#.