To Forward an Extension to A Cell Phone Number or Outside Number
Hit the Call Forward Button (CFWD) (Only the newer ESI phones already have an existing Call Forward Button – For older phones, see To Program a Button As A Feature Key (example Caller ID or Call Forward)
Enter the 9 key first and then enter the cell phone number with area code first or outside phone number
Hit the # key
To Cancel Call Forwarding That Is Forwarded to A Cell Phone or Outside Number
Hit the Call Forward Button (CFWD)
Hit the *P/UP Key
You are done.