NDAA passed: Internet and Online Streaming Services Emergency Alert Study
Brandon Martin
lists.nanog at monmotha.net
Wed Jan 6 14:48:38 UTC 2021
On 1/5/21 7:29 PM, Chris Adams wrote:
> I don't know if an unsubscribed cell phone gets the emergency alerts (I
> know you are supposed to be able to call 911 from any cell phone, even
> if not carrying paid service). If so, that'd be another cheap way to
> get alerts.
They pretty much universally should as long as they still have a SIM in
them (or are eSIM/ESN-only devices) to give them some idea of their
preferred network to which to register. Even if not, they're supposed
to register with the "best network available" for emergency calling and
alerting only, though I'm not sure how robust that is.
I have definitely received SMS-broadcast emergency alerts on an
"inactive" phone that was on and not in airplane mode for various
reasons, so it does seem to work. It was a CDMA2000 ESN-only device,
though, so still had provisioning info. I usually keep such devices in
airplane mode, if they're still in use, though, and obviously then the
cell radio is inactive so no alerts.
More information about the NANOG
mailing list