A toll free number just forwards the calls to a local number, and this is the local number you want the calls to be forwarded to. You can point toll free numbers to a cell phone or landline number, to a personal or business line. You can point a toll free number to someone else’s number. You can even point your toll free number to a payphone if you can find one, or someone else’s cell phone. Pointing a toll free number to a local number doesn’t change or affect the local number other than it rings when people dial the toll free number.
It has to be a local number, you can’t point a toll free number to another toll free number. That’s kind of like dividing by zero. You can point multiple toll free numbers to the same local number.
You can use the same local phone company that provides the local number, but you do NOT have to by any means. Cell phone companies for instance don’t provide toll free service but you can point any toll free number to that cell phone. You just have to use a company that does provide toll free service.