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globeandmail.com: Cellphone carriers have one year to upgrade 911 system, CRTC says
Cell phone companies have been told that by this time next year they must be able to locate callers to within a radius of between 10 and 300 meters using either GPS, triangulation, or both. Currently, Canadian cell phone companies can only locate a person to within the radius of the nearest tower, an area that can be between 4 and 20 kilometres.