In the top 25 cellular market areas, nationwide cell phone providers are already required to provide Z-axis (elevation) data within 3 meters for 80% of calls [for compatible devices]. The requirements increase each year; by 2026, all cellular providers are required to provide z-axis precision for dispatchable location of +/- 3 meters everywhere in the US.
This is all in addition to providing +/- 50 meter horizontal (x, y axis, also known as latitude and longitude) precision for 911 calls. https://www.fcc.gov/public-safety-and-homeland-security/policy-and-licensing-division/911-services/general/location-accuracy-indoor-benchmarks Mark R Lindsey, SMTS | +1-229-316-0013 | [email protected] | https://ecg.co/lindsey/ <https://ecg.co/lindsey/> > On Sep 27, 2021, at 4:07 PM, Carlos Alvarez <[email protected]> wrote: > > They probably don't, and I don't think they are covered by the same > law/requirements. Also, they have far more schills(COUGH) I mean lobbyists > in congress. > > FLOOR could be determined by AP lists, probably. Maybe. Specific office > seems impossible currently. > > > On Mon, Sep 27, 2021 at 1:05 PM Alex Balashov via VoiceOps > <[email protected] <mailto:[email protected]>> wrote: > And how do the cell phone operators know what floor you’re on? > > — > Sent from mobile, with due apologies for brevity and errors. > >> On Sep 27, 2021, at 3:49 PM, Carlos Alvarez <[email protected] >> <mailto:[email protected]>> wrote: >> >> >> It used to be, then the whole Ray Baum thing, and now it's not. Short >> story: 911 call failed to identify the specific floor/office, person died. >> Now you have to provide enough info for a first responder to reach a person >> without help, which also means opening main doors if needed. There's simply >> no way that a laptop will give that specificity. Will it be sufficient to >> say that they are near the AP on the third floor southwest corner? The >> letter of the law seems to say "no." >> >> >> >> On Mon, Sep 27, 2021 at 12:40 PM Alex Balashov via VoiceOps >> <[email protected] <mailto:[email protected]>> wrote: >> I wonder if doing GeoIP via a commercial database like MaxMind—and we all >> know how perfect a location mechanism that is—could be construed as a >> sufficient “best effort” in this case. >> >> > On Sep 27, 2021, at 3:28 PM, Carlos Alvarez <[email protected] >> > <mailto:[email protected]>> wrote: >> > >> > Ours doesn't, but that's a good idea to share with the vendor. But in >> > most cases, people are using the softphone on a laptop and there's no >> > native phone app, nor a GPS, nor any other location info other than >> > proximate wi-fi networks. >> > >> > I can see no feasible way to meet the letter of the law, and hate to be >> > depending on the good graces of a bureaucrat to know that it's an >> > impossible task. >> >> -- >> Alex Balashov | Principal | Evariste Systems LLC >> >> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) >> Web: http://www.evaristesys.com/ <http://www.evaristesys.com/>, >> http://www.csrpswitch.com/ <http://www.csrpswitch.com/> >> >> _______________________________________________ >> VoiceOps mailing list >> [email protected] <mailto:[email protected]> >> https://puck.nether.net/mailman/listinfo/voiceops >> <https://puck.nether.net/mailman/listinfo/voiceops> >> _______________________________________________ >> VoiceOps mailing list >> [email protected] <mailto:[email protected]> >> https://puck.nether.net/mailman/listinfo/voiceops >> <https://puck.nether.net/mailman/listinfo/voiceops> > _______________________________________________ > VoiceOps mailing list > [email protected] <mailto:[email protected]> > https://puck.nether.net/mailman/listinfo/voiceops > <https://puck.nether.net/mailman/listinfo/voiceops> > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops
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