Wide Area Telephone Service

Last updated

Wide Area Telephone Service (WATS) was a flat-rate long-distance service for customer dial-type telecommunications in the service areas of the North American Numbering Plan (NANP).

Contents

The service was between a given customer phone (also known as a "station") and stations within specified geographic rate areas, employing a single telephone line between the customer location and the serving central office. Each access line could be arranged for outward (OUT-WATS) or inward (IN-WATS) service, or both. [1]

WATS was introduced by the Bell System in 1961 as a long-distance flat-rate plan by which a business could obtain a special line with an included number of hours ('measured time' or 'full-time') of long-distance calling to a specified area. [2] [3] These lines were most often connected to private branch exchanges in large businesses. WATS lines were the basis for the first direct-dial toll-free 1-800-numbers (intrastate in 1966, [4] interstate in 1967); by 1976, WATS brought AT&T Corporation a billion dollars in annual revenue ($5.35 billion in 2023 dollars)

For outbound calls, the 1984 AT&T divestiture brought multiple competitors offering similar services using standard business telephone lines; the special WATS line was ultimately supplanted by other flat-rate offerings. The requirement that an inbound toll-free number terminate at a special WATS line or fixed-rate service was also rendered obsolete by the 1980s due to intelligent network capability and technological improvement in the 800-service. A toll-free number may now terminate at a T-carrier line, at any standard local telephone number or at one of multiple destinations based on time of day, call origin, cost or other factors.

Outbound WATS

For Outbound WATS, the United States was divided into geographical Bands 0 through 5. Band zero was intrastate calling and bands 1 through 5 (or 6) were interstate calls that were progressively further from the originating number. [5] Historically, the higher band number carried a higher price per month or per minute. These lines could be used for outbound long-distance only; not local. In the U.S., interstate WATS lines could not be used for intrastate calls, and vice versa. With wider availability of inexpensive long distance using regular business lines, OutWATS service became obsolete late in the 20th century.

InWATS

A form of toll-free telephone service in North America was the Zenith number, published in distant cities from where a company expected or desired frequent customer calls. Published as "Zenith" and a four- or five-digit number, these collect calls required operator assistance. The subscriber of the service was charged for the call.

With "inward WATS", introduced for interstate calls by the American Telephone and Telegraph Company (AT&T) in 1967, subscribers were issued a toll-free telephone number in a designated toll-free area code. Unlike a standard collect call or a call to a Zenith number, 1‑800 normally may be dialed directly with no live operator. Callers within a designated area could call without incurring a toll charge as the recipient paid for the calls at a fixed rate.

The introduction of InWATS fortuitously fell around the same time as the early centralized, automated national airline and hotel reservation systems, including Sabre (American Airlines, 1963), Holidex (Holiday Inn, 1965) and Reservatron (Sheraton, 1969). Hundreds of local reservation numbers for a major chain could be replaced with one central number, backed by a national computerized reservation system. [6]

InWATS exchanges were assigned to Canada and other North American Numbering Plan countries, but the original InWATS in each country accepted domestic calls only. Initially 1‑800‑NN2‑XXXX numbers were U.S. intrastate and specific prefixes (such as 1‑800‑387 Toronto and 1‑800‑267 Ottawa) were assigned to Canada. [7] In the 1970s, AT&T's internal routing guides included separate U.S. and Canadian 1-800 exchange maps which looked much like area code maps [8] as each geographic area code had one or more specific freephone exchange prefixes. Sheraton's 800‑325‑3535, one of the notable early adopters in late 1969, was hard-wired into St. Louis area code 314; [6] 1‑800‑HOLIDAY at that time could not be a U.S. number if the 1‑800‑465 prefix was hard-wired to Thunder Bay's area code 807. Any attempt to call a foreign 1‑800 gave a pre-recorded error, "the number you have dialed is not available from your calling area."

Like the OutWATS service, AT&T's InWATS was divided into intrastate and interstate, with interstate calls priced into five or six "bands" of calling. This favored placement of US national call centers in low-population Midwestern states such as Nebraska, [9] whose central location meant a carefully situated "band 3" number reaching halfway across the US in every direction could potentially reach 47 states. A San Diego call center would be less fortunate; even with "band 6" (the most expensive lines), its national number would be unreachable to millions as California is a populous state and intrastate calls needed a separate toll-free number.

The original InWATS system was supplanted by "Advanced 800 Service" in the 1980s. [10] Modern systems eliminated requirements tying toll-free numbers to dedicated flat-rate inbound WATS lines. Direct inward dial, introduced in 1983, allowed one trunk to carry calls for multiple numbers. AT&T's monopoly on U.S. toll-free number routing ended in 1986, encouraging flexibility in order to match rivals Sprint and MCI. By 1989, fixed "bands" of coverage area had been largely replaced by distance-based billing, a growing number of 1‑800 numbers were being terminated at standard local business or residence lines and one number could be sent to multiple locations based on call origin, least-cost routing or time of day routing. [11] RespOrgs were established in the U.S. in 1993 and Canada in 1994 to provide toll free number portability using the Service Management System (SMS/800) database. Calls from Canada and the U.S., intrastate and interstate, could terminate at the same 1‑800 number, even via different carriers. Vanity numbers became easier to obtain as a toll-free exchange prefix was no longer tied to a geographic location. By the 21st century, Voice over IP placed toll-free and foreign exchange numbers into the hands of even the smallest users, to whom dedicated inbound lines under the original InWATS model would have been prohibitively expensive.

Civil Rights Movement

During the Civil Rights Movement in the U.S., activist organizations such as SNCC used WATS as a convenient way for eyewitnesses on the ground to convey information quickly. Notes from these phone calls were compiled into "WATS Line Reports" and mailed to civil rights leaders, the media, the Justice Department, and others involved in the events. [12] WATS was also how organizations communicated with local leaders across the country. A "Bay Area Friends of SNCC" newsletter in 1965 described WATS:

The WATS (Wide Area Telephone Service) line is the heart of all SNCC security and communications. For a flat monthly rate, an unlimited number of calls can be dialed directly to any place in the country — or the state — depending on what line one uses. The Jackson office has a state-wide line, the Atlanta office has the national WATS line. Both run on a 24-hour basis. A project worker can call in news of any incident, threat or major activity to the Jackson office. The WATS operator there takes down the details and relays it to Atlanta if the event is of national importance. In the case of a threat or incident involving Federal laws, Jackson will notify the FBI and the Justice Department. Atlanta uses its national WATS line to notify SNCC groups around the country. [13]

Related Research Articles

An automatic number announcement circuit (ANAC) is a component of a central office of a telephone company that provides a service to installation and service technicians to determine the telephone number of a telephone line. The facility has a telephone number that may be called to listen to an automatic announcement that includes the caller's telephone number. The ANAC facility is useful primarily during the installation of landline telephones to quickly identify one of multiple wire pairs in a bundle or at a termination point.

<span class="mw-page-title-main">Telephone switchboard</span> Device used to connect telephone circuits to establish calls between users

A telephone switchboard was a device used to connect circuits of telephones to establish telephone calls between users or other switchboards, throughout the 20th century. The switchboard was an essential component of a manual telephone exchange, and was operated by switchboard operators who used electrical cords or switches to establish the connections.

Direct distance dialing (DDD) is a telecommunication service feature in North America by which a caller may, without operator assistance, call any other user outside the local calling area. Direct dialing by subscribers typically requires extra digits to be dialed as prefixes to the directory telephone number of the destination. International Direct Distance Dialing (IDDD) extends the system beyond the geographic boundaries of the North American Numbering Plan (NANP).

<span class="mw-page-title-main">Blue box</span> Device for hacking telephone networks

A blue box is an electronic device that produces tones used to generate the in-band signaling tones formerly used within the North American long-distance telephone network to send line status and called number information over voice circuits. This allowed an illicit user, referred to as a "phreaker", to place long-distance calls, without using the network's user facilities, that would be billed to another number or dismissed entirely as an incomplete call. A number of similar "color boxes" were also created to control other aspects of the phone network.

<span class="mw-page-title-main">North American Numbering Plan</span> Integrated telephone numbering plan of twenty North American countries

The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably Mexico, do not participate with the NANP.

A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls. For the calling party, a call to a toll-free number from a landline is free of charge. A toll-free number is identified by a dialing prefix similar to an area code. The specific service access varies by country.

<span class="mw-page-title-main">Zenith number</span> Type of business telephone service

A Zenith number was a telephone service in the United States that allowed a calling party to call the service subscriber at no charge by requesting the name Zenith and the number from a switchboard operator. The service preceded the system of toll-free telephone numbers with area code 800 in the United States. Some areas used the names "Enterprise" or "WX" number.

In telecommunications, a long-distance call (U.S.) or trunk call is a telephone call made to a location outside a defined local calling area. Long-distance calls are typically charged a higher billing rate than local calls. The term is not necessarily synonymous with placing calls to another telephone area code.

<span class="mw-page-title-main">Telephone numbers in Singapore</span>

Telephone numbers in Singapore, also known as the National Numbering Plan, are regulated by the Info-communications Media Development Authority (IMDA). Due to the small geographical size of Singapore, there are no area or trunk codes; all numbers belong to one numbering area, and thus come in the same 8-digit format. Numbers are categorised based on the first digit, thus providing ten possible categories, of which six are currently in use and the remaining four reserved for future usage.

<span class="mw-page-title-main">Telephone numbers in Romania</span>

The dialling plan for mobile networks and new landline operators is closed; all subscriber numbers must be dialled in full. For landline numbers starting with 02, the dialling plan used to be open; the trunk digit and area code could be omitted if the caller was in the same area code as the callee. However, starting May 3, 2008, all landline numbers must be dialled in full.

<span class="mw-page-title-main">Telephone numbers in New Zealand</span> New Zealand numbering plan

The New Zealand telephone numbering plan describes the allocation of telephone numbers in New Zealand and the Pitcairn Islands.

<span class="mw-page-title-main">Phoneword</span> Mnemonic phrases represented as alphanumeric equivalents of a telephone number

Phonewords are mnemonic phrases represented as alphanumeric equivalents of a telephone number. In many countries, the digits on the telephone keypad also have letters assigned. By replacing the digits of a telephone number with the corresponding letters, it is sometimes possible to form a whole or partial word, an acronym, abbreviation, or some other alphanumeric combination.

A RespOrg, or responsible organization, is a company that maintains the registration for individual toll-free telephone numbers In the North American Numbering Plan by means of the distributed Service Management System/800 database.

Historically, a foreign exchange service (FX) was an access service in a telecommunications network in which a telephone in a given exchange area is connected, via a private line, as opposed to a switched line, to a telephone exchange or central office in another exchange area, called the foreign exchange, rather than the local exchange area where the subscriber station equipment is located. To call originators, it appears that the called party having the FX service is located in the foreign exchange area. It is assigned a telephone number of the foreign exchange. The telecommunication circuit between central offices that implements foreign exchange service has complementary interface types at each end. At the foreign central office that provides the service, the interface is called the foreign exchange office (FXO) end, and at the end where the subscriber station is connected, it provides the foreign exchange station (FXS) interface.

Telephone numbers in Canada follow the fixed-length format of the North American Numbering Plan (NANP) of a three-digit area code, a three-digit central office code, and a four-digit station or line code. This is represented as NPA NXX XXXX.

National conventions for writing telephone numbers vary by country. The International Telecommunication Union (ITU) publishes a recommendation entitled Notation for national and international telephone numbers, e-mail addresses and Web addresses. Recommendation E.123 specifies the format of telephone numbers assigned to telephones and similar communication endpoints in national telephone numbering plans.

The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators. Expanding this technology for national use required a comprehensive and universal, continent-wide telephone numbering plan.

Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.

Toll-free number portability or freephone number portability allows the subscriber of a freephone number to switch providers while retaining the same number for incoming calls. Similar schemes exist in many countries for local number portability and mobile number portability, although implementation details for each portability scheme varies between countries.

In conventional landline telephony, a non-dialable toll point or toll station was a lone station or line serving a rural subscriber many miles from the nearest central office. As it had no home telephone exchange and therefore no local calling area, no customer could dial its number; all connections to it had to be obtained manually by the long distance operator.

References

  1. ↑ PD-icon.svg This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22.
  2. ↑ AT&T (1974) Events in Telephone History
  3. ↑ Alan Stone (Jan 1, 1997). How America Got On-line: Politics, Markets, and the Revolution in Telecommunications . M.E. Sharpe. p.  70 . Retrieved 2013-10-31.
  4. ↑ "What's InWATS?". Traverse City Record-Eagle (advertisement). Traverse City, Michigan. April 13, 1966. p. 28. What's INWATS? An easier way for out-of-town customers to place their business with you! INWATS stands for Inward Wide Area Telephone Service. It lets selected customers call your company Long Distance with no cost to them. INWATS provides you with incoming telephone service from areas which you have selected. It automatically reverses the Long Distance charges so that you, instead of your customer, pay the toll. New, advanced telephone switching equipment makes sure only calls from these preselected areas are accepted toll-free. This service will increase the incentive of your present customers to do more business with you, and will help attract new customers, too. For details about how INWATS can serve you, call the Michigan Bell Business Office and ask for a Communications Consultant. Michigan Bell - Part of the Nationwide Bell System
  5. ↑ Cincinnati Bell (April 1971). "WATS was built for Philip Carey (and you too)". Cincinnati Magazine (advertisement). pp. 63–64.
  6. 1 2 "Hotel History: The Magic of 800-325-3535 | BlueMauMau, franchise news for franchisees". Archived from the original on 2018-06-27. Retrieved 2015-01-28.
  7. ↑ "800 Number Allocation", Telecom Informer (February, 1987), Dan Foley, 2600 Magazine reprinted in "The Best of 2600: A Hacker Odyssey - By Emmanuel Goldstein" suggests 1-800-NN7 as Canada, but AT&T routing guides list 1-800-N61, 1-800-N63, 1-800-N65, 1-800-N67 as the most common Canadian toll-free exchange prefixes. There were exceptions to these patterns, but one prefix always identified one specific geographic destination area code in InWATS.
  8. ↑ Traffic Routing Guide, AT&T, 1977 matches each area code to one or more specific hard-wired exchanges.
  9. ↑ "Atlanta Telephone History". 8 July 2008. Archived from the original on 10 May 2016. Retrieved 10 May 2016.
  10. ↑ Weber, Roy P. "Data base communication call processing method (US Patent 4191860)". Filed Jul 13, 1978. Issued Mar 4, 1980, devised at Bell Labs and deployed by AT&T in 1982, supplanted InWATS with a flexible intelligent network database which could send any toll-free number anywhere.
  11. ↑ "800 services now a fact of life". Network World. July 3, 1989. Retrieved October 31, 2013.
  12. ↑ Stephen, Bijan (October 2015). "How Black Lives Matter Uses Social Media to Fight the Power". Wired. Retrieved 22 October 2015.
  13. ↑ "WATS Reports". Bay Area Friends of SNCC Newsletter. Online Archive of California. February 1965. Retrieved 22 October 2015.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.