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E911 |
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E911 (Enhanced 911) Refers to 911 emergency service on cellular and Internet telephone calls (VoIP). In 1996, the FCC mandated a two-phase implementation for cellphone carriers to be completed by the end of 2005. Phase I required that carriers provide the telephone number and location of the cell tower that took the 911 call to the Public Safety Answering Point (PSAP). Phase II required that the carrier be able to triangulate the call to within 100 meters for the majority of calls. In 1999, the FCC added assisted GPS (AGPS) cellphones as an alternate solution with accuracy of 50 meters for the majority of calls.In 2005, the E911 service requirement was mandated for voice over IP (VoIP) providers. See mobile positioning, triangulate and VoIP. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | The 911 Turbo, 911 GT3 RS, its motorsport twin, the 911 GT3 Cup, and the 911 Sport Classic limited to 250 cars are debuting at the exhibition with the brand's typical sportiness. THE iconic Porsche 911 Turbo is back in business, packing a bigger punch than ever before. The Porsche motor company produce four designs, the Boxter, the Cayman, the 911 and the Cayenne (Porsche''s 4x4), but probably the most desirable of all these is the Porsche 911, the quintessential sports car for over 40 years, a superb sports car for everyday driving. |
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