A toll-free, Freecall, Freephone, or 800 number is a special telephone number, in that the calle party is charged the cost of the calls by the telephone carrier, instead of the calling party. The cost of the call to the called party is usually based on factors such as the amount of usage the number experiences, the cost of the trunk lines to the facility, and possibly a monthly flat rate service charge. The called party may use a Freephone number because: