1800 numbers- they are everywhere-whether you see it on billboards, advertisements, televisions, or on business cards, storefronts, websites etc.
In fact, you will need it for your business for sure if you hit a pretty good number. You won't ever want that your customers pay to know about the services or the products that you sell. It is said toll free because it is not chargeable to a customer. It is totally free of cost for your customers. But the person who avails for this 1800 toll free number service has to pay for its bill.
Toll free numbers allow callers to reach to individuals or to the businesses without being charged for the call. The called party (toll free subscriber) has to pay instead of the calling party. Toll free numbers can be dialed directly by anybody to reach to you on a particular number.