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| - | Location Information Server From Wikipedia, the free encyclopedia Jump to: navigation, search
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| - | The Location Information Server, or LIS is a network node originally defined in the National Emergency Number Association i2[1] network architecture that addresses the intermediate solution for providing e911 service for users of VoIP telephony. The LIS is the node that determines the location of the VoIP terminal.
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| - | Beyond the NENA architecture and VoIP, the LIS is capable of providing location [http://blogsdelagente.com/hogan100/2012/07/31/versare-migliori-scarpe-hogan-con-spedizione-gratuita-azione/ lsu tigers football] information to any IP device within its served access network.[2]
| + | == Use Your Talents Give More Receive More == |
| - | Contents 1 The Role of the LIS 1.1 Location Determination 2 Architecture and Protocols
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| - | 3 References [edit] The Role of the [http://hogan988.over-blog.com/article-proprio-quello-che-styles-esattamente-di-stivali-ourite-scarpe-hogan-not-ti-piace-di-piu-108668202.html christmas stores] LIS
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| - | Distributed systems for locating people and equipment will be at the heart of tomorrow's active offices. Computer and communications systems continue to proliferate in the office and home. Systems are varied and complex, involving wireless networks and mobile computers. However, systems [http://paradescout.com/node/2020 autism speaks.org] are underused because the choices of control mechanisms and application interfaces are too diverse. It is therefore pertinent to consider which mechanisms might allow the user to manipulate systems in simple and ubiquitous ways, and how computers can be made more aware of the facilities in their surroundings. Knowledge of the location of [http://rayban31.oggix.org/2012/07/31/linnovazione-connessi-con-the-scarpe-hogan-ourite-stivali-hogan-causare-potrebbe-essere-united-nations-mercato-diversificato-corrente-a-contrib/ christmas decoration] people and equipment within an organization is such a mechanism. Annotating a resource database with location information allows location-based heuristics for control and interaction to be constructed. This approach is particularly attractive because location techniques can be devised that are physically unobtrusive and do not rely on explicit user action. The article describes the technology of a system for locating people and equipment, and the design of a distributed system service supporting access to that information. The application interfaces made possible by or that benefit from this facility are presented
| + | When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, I used everything you gave me.Erma Bombeck |
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| - | [edit] Location Determination
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| - | The method used to determine the location of a device in an access network varies between the different types of networks. For a wired network, such as Ethernet or DSL a wiremap method is common. In wiremap location determination, the location of a device is determined by finding which cables are used to send packets to the device. This involves tracing data through aggregation points in the network (such as Ethernet switches, or DSL access nodes) and finding the port that packets for that device are sent to. This information is combined with data available to the LIS (usually extracted from a database) to [http://1318-2191.cusserver.anexia.at/ralphlauren161/1864310/Tous+l%26%23039%3Bensemble+des+gens+choisissent+de+prendre+l+.+a+.+d%A8%A6cision+Polo+Ralph+Lauren+T-shirts.html autism speaks walk] determine a final location. How this tracing is done then depends on the type of network.
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| - | In wireless networks, a range of technologies can be applied to location determination, the most basic of which uses the location of the radio transmitter as an approximation. The actual method applied is similar to the wiremap method, if a [http://louboutin30.loxblog.com/ lions pictures] radio transmitter can be identified, then the location of the device can be given as the position of the transmitter with a region of uncertainty.
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| - | [edit] Architecture and Protocols
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| - | The IETF has defined an architecture and protocols for [http://www.myexit.org/node/197215 christmas sale] acquiring location information from a LIS. A LIS in the immediate access network is automatically discovered[3] and location information is retrieved using the HELD protocol.[4] Location information can be retrieved directly��known as by value��or the LIS can generate a temporary URI that can be used to provide location indirectly��known as a location URI.
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| - | The location information provided by a LIS primarily uses the GEOPRIV format (RFC 4119), an XML representation based on the presence format defined in RFC 3863. RFC 4119 provides a container for both geodetic position and civic address information (now updated by RFC 5139) and also defines elements for expressing a user's privacy preferences.
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| - | [edit] References ^ NENA (2005-12-06) (PDF). NENA Interim VoIP Architecture for Enhanced 9-1-1 Services (i2). 08-001 [http://ralphlauren161.blog.fc2blog.net/blog-entry-214.html speak english] Issue 1. NENA. http://www.nena.org/resource/collection/6366E817-C855-4776-AF3A-F9F715D1AF12/NENA_08-001-v1_Interim_VoIP_Architecture_i2.pdf. Retrieved 2008-12-17.?
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| - | ^ Dawson, Martin; James Winterbottom, Martin Thomson (2006-11-13). IP Location. McGraw-Hill. ISBN?0-07-226377-6.?
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| - | ^ Thomson, Martin; James Winterbottom (2008-12-17). "Discovering the Local Location Information Server (LIS) (work in progress)". http://tools.ietf.org/html/draft-ietf-geopriv-lis-discovery. Retrieved 2008-12-17.?
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| - | ^ Barnes (Ed.), Mary; James Winterbottom, Martin Thomson, Barbara Stark (2008-12-17). "HTTP Enabled Location Delivery (HELD) (work in progress)". http://tools.ietf.org/html/draft-ietf-geopriv-http-location-delivery. Retrieved 2008-12-17.? Retrieved from "http://en.wikipedia.org/w/index.php?title=Location_Information_Server&oldid=483501994" Categories: Computer networking Personal tools Create account Log in Namespaces Article Talk Variants Views Read Edit View history Actions Search Navigation Main page Contents Featured content Current events Random article Donate to Wikipedia Interaction Help About Wikipedia Community portal Recent changes Contact Wikipedia Toolbox What links here Related changes Upload file Special pages Permanent link
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| - | Cite this page Print/export Create a bookDownload as PDFPrintable version This page was last modified on 23 March 2012 at 09:00.
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