Automatic number identification


Automatic number identification

Automatic Number Identification (ANI) is a feature of telephony intelligent network services that permits subscribers to display or capture the telephone numbers of calling parties. In the United States it is part of Inward Wide Area Telephone Service (WATS). The ANI service was created by AT&T for internal long distance billing purposes, and is not related to newer caller ID services. Inward WATS is purchased by customers so that other telephone users (for example, prospective customers) can call the number toll free. The customer is issued a distinctive toll-free telephone number beginning with a special area code such as 800, or more recently, 888, 877, or 866. Subscribers to these numbers are typically called Inward WATS subscribers.

A related piece of information conveyed to the Inward WATS subscriber is the Dialed Number Identification Service (DNIS), the number that the caller dialed when accessing the service. With the information, the service provider can have several toll-free numbers directed to the same call center and provide unique service based on the number dialed. DNIS can also be used to identify other call routing information. For example, the WATS service can be configured to send a specific DNIS number that is assigned to callers from geographic regions based on city, area code, state, or country.

ANI has two components, information digits, which identify the class of service [cite web |url=http://www.nanpa.com/number_resource_info/ani_ii_assignments.html|title=ANI II Digits|publisher=North American Numbering Plan Administration|year=2003|accessdate=2007-07-06] , and the calling party telephone number.

ANI is also used to describe the functions of two-way radio selective calling that identify the transmitting user.

Privacy

Because ANI is unrelated to caller ID, the caller's telephone number and line type are captured by ANI equipment even if caller ID blocking is activated. The destination telephone company switching office can relay the originating telephone number to ANI delivery services subscribers. Toll-free Inward WATS number subscribers and large companies normally have access to ANI information, either instantly via installed equipment, or from a monthly billing statement. Residential subscribers can obtain access to ANI information through third party companies that charge for the service.

Automatic number announcement

Early in its history, ANI was used to provide automatic number announcement, an internal test service for telephone maintenance workers. The service was generally unknown to the public but could be accessed by dialing special numbers reserved for testing purposes.

imilar services

*Europe: Calling Line Identification (CLI)
*UK: Caller Line Identification (CLID)
*Australia: Automatic number identification (ANI) 1800801920 or 12722123 (Telstra line only, local call cost)

Notes


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Automatic Number Identification — (ANI) ist ein Dienst in Telefonnetzen, der Nutzern die Telefonnummer und verschiedene weitere Parameter des Anrufers übermittelt. Entwickelt wurde ANI von AT T für die interne Abrechnung von Ferngesprächen. Genutzt wird der Service in den USA… …   Deutsch Wikipedia

  • automatic number identification — (ANI)    Feature that automatically identifies the calling station s extension number, or outside party s telephone number …   IT glossary of terms, acronyms and abbreviations

  • automatic number identification —    Abbreviated ANI. A method of passing a caller s telephone number over the network to the recipient so that the caller can be identified. ANI is often associated with ISDN and is sometimes known as caller ID …   Dictionary of networking

  • Automatic number announcement circuit — An automatic number announcement circuit (ANAC) is a special telephone number that is meant to be used by phone company technicians and other telecommunications technicians to determine the phone number of a particular line. The way an ANAC works …   Wikipedia

  • Automatic number plate recognition — The system must be able to deal with different styles of license plates …   Wikipedia

  • Automatic Transmitter Identification System — The Automatic Transmitter Identification System (ATIS) is a protocol used for the station identification of television channels carried on satellite TV. ATIS is only required for analog TV transmission, and only via satellites or earth stations… …   Wikipedia

  • Dialed Number Identification Service — (DNIS) is a service sold by telecommunications companies to corporate clients that lets them determine which telephone number was dialed by a customer. This is useful in determining how to answer an inbound call. The Telecommunications company… …   Wikipedia

  • Automatic Message Accounting — (AMA) provides detail billing for telephone calls. When Direct Distance Dialing (DDD) was introduced in the USA, message registers no longer sufficed for dialed telephone calls. The need to record the time and phone number of each long distance… …   Wikipedia

  • Automatic link establishment — Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF (High Frequency) radio communications.cite web|title=Frequency Agile Systems in the MF/HF Bands |author=Telecom… …   Wikipedia

  • Automatic dependent surveillance-broadcast — (ADS B) is a cooperative surveillance technique for air traffic control and related applications. An ADS B out equipped aircraft determines its own position using a global navigation satellite system and periodically broadcasts this position and… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.