FCC Adopts 3 Meter Vertical Accuracy Requirement for Wireless 911 Calls

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The Federal Communications Commission has adopted an order aimed at helping first responders locate 911 callers in multi-story buildings.  The order adopts a z-axis (i.e., vertical) location accuracy metric of plus or minus three meters relative to the handset for 80% of indoor wireless 911 calls.  The vertical accuracy requirements will be phased in starting in April 2021.  The Commission is also seeking comment on establishing a long-term timeline for even more stringent vertical location accuracy, including a requirement that carriers provide public safety answering points with floor level accuracy.

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