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However, many calling card services charge their own fee when their toll-free numbers are used to make calls or when their toll-free numbers are used from pay phones. A customer may do this for disaster recovery or so they can negotiate a better price. These toll-free numbers can normally be called from any phone in Canada or the U. Retrieved August 22, Categories : Telecommunications in the United States. The subsequent routing of the call may be done in many ways, ranging from simple to complex depending on the needs of the owner of the toll-free number. Most of the United States and all of Canada uses a flat-rate structure for local calls, which incur no per-call cost to residential subscribers. In a call center or contact center environment, the call is then typically answered by a telephone system known as an automatic call distributor ACD or private branch exchange PBX. This article needs additional citations for verification. Such similarities have been exploited by fraudsters in international locations that can be direct-dialed with what appear at first glance to be domestic area codes, including , , and , which are official prefixes for the Dominican Republic and which is the area code for Jamaica. When a customer decides to use toll-free service, they assign a Responsible Organization RespOrg to own and maintain that number. Please help improve this article by adding citations to reliable sources. By breaking the link between the number's exchange prefix and geographic location, this system opened opportunities for vanity number advertising — an advantage in media like commercial radio where numbers need to be memorable. The format of the toll-free number is called a non-geographic number, in contrast to telephone numbers associated with households that are geographic. Toll-free numbers are normally specific to each country. Some of the available options are:. In the latter case, it is possible to determine an approximate location of the caller from the area code e. These terminated on special fixed-rate trunks which would accept calls from a specified calling area with either no limit or a specific maximum number of hours per month. The SS7 network is a packet-switched network carrying signaling data setup and tear down of the call and services separate from the circuit-switched bearer network the payload of the telephone call in the AIN services network. Retrieved September 12, North American Numbering Plan Administration. When a toll-free number is dialed, each digit is analyzed and processed by the LEC. Toll-free numbers can be shared among IXCs. Calls that cross U. Brokering numbers for sale is illegal, but renting a number or part of a number circumvents these regulations as FCC enforcement is sporadic to minimal. In contrast, toll-free numbers could be physically located anywhere in the world. A customer can call the IXC or an independent RespOrg directly via a special toll-free number to make changes, or a customer may be able to make changes through direct access to the network via a dedicated terminal provided by the IXC. More complicated cases may apply special routing rules in addition such as Time of Day routing. Since the advent of cell phones and voice over IP, households can have any area code in the U. Some geographic area codes are similar to the toll-free codes, e. Originally, services were isolated between the US and Canada, but in , an agreement between carriers in the two countries allowed the numbers in each country to be accessible to the other; providers of service were able to add zones to cover the expanded areas able to be offered. The toll-free call is identified as such by the service switching point SSP. Unsourced material may be challenged and removed. From Wikipedia, the free encyclopedia. Hidden categories: Articles needing additional references from February All articles needing additional references Use mdy dates from June All articles with unsourced statements Articles with unsourced statements from February Articles with unsourced statements from August Namespaces Article Talk. As regulators in North America had long allowed long-distance calling to be priced artificially high in return for artificially low rates for local service, subscribers tended to make toll calls rarely and to keep them deliberately brief. LATA boundaries, or originate in one country and terminate in another, are referred to as inter-exchange calls. The billing of calls was not itemized and the expensive fixed-rate line was only within financial reach of large corporations and government agencies. In the simplest case, the toll-free number is translated into a regular geographic number, which is then routed by the telephone exchange in the normal way. February 20, Federal Communications Commission. Most countries are divided into regions called exchanges, and within each exchange a local telephone company handles all phone services. By using this site, you agree to the Terms of Use and Privacy Policy.{/INSERTKEYS}{/PARAGRAPH} Some businesses, eager to sell their products to buyers outside the local calling area, were willing to accept collect calls or installed special services, such as Zenith number service, where they paid the cost of receiving telephone enquiries. Calls to these numbers are free to the caller if dialed from land-line phones, but may incur mobile airtime charges for cellular phones. From many countries such as the U. New York or London. These routes are put in place and are not usually changed. Although toll-free numbers are not accessible internationally, many phone services actually call through the U. All of the above routing features are sometimes referred to as static routing features. The original code operated for over thirty years before its 7. {PARAGRAPH}{INSERTKEYS}In the United States of America, Canada, and other countries participating in the North American Numbering Plan , a toll-free telephone number has one of the area codes , , [1] , , , , and Area code is expected to be used in the future, followed by through , then However, is reserved as a three-digit number for various other purposes. Once the final determination of where the call is supposed to go is completed, the call is then routed to the subscriber's trunk lines. When a toll-free number is dialed, the phone company must determine where the actual physical destination is, which is achieved by using the intelligent network capabilities embedded into the network. In addition, is reserved as a member of the series x9x for future numbering plan expansion. Typically, a service provider offered a variety of zones, each costing more than the smaller ones, but adding progressively larger areas from which calls would be accepted for a customer. The way that a toll-free number is handled depends on whether it is a domestic or an interexchange call. If changes are required, a customer usually has several options to make changes. Some are not accessible from pay phones. Contribute Help Community portal Recent changes Upload file. Open competition also brought an end to the pattern of long distance subsidizing local service, bringing per-minute charges down to levels where any business could afford to take orders using an number. Calls from pay phones assess the toll-free owner an additional fee in the U. CSF Corporation. Initially, all of these calls had to be completed by the switchboard operator. In addition, U. The arrival of Advanced Service meant that numbers originally limited for use in Canada became available to American customers, and vice versa. Sometimes they accept calls only from either Canada or the U. Thus, to reach xxx-yyyy from a country outside its toll-free coverage area, xxx-yyyy could be dialed. Views Read Edit View history.