[EAS] Fwd: [ChicagolandSkywarn] WEA Enabled Phones to Receive Emergency Messages

[Ed Czarnecki]

CMAS/WEA is on a separate channel from voice and data.  Also, it is cell broadcast (multicast) to enabled handsets.

Only a certain class of alerts are eligible to make it from the IPAWS aggregator through the wireless carrier gateways - i.e. those EAS events representing imminent threat to life and property.  Further the alerts must be originated by accredited emergency management authorities in the CAP data format, tag with the highest levels of urgency, severity and certainty (CAP message elements).

So the intent is for the alerts to be geo targeted, high priority, and not susceptible to network traffic.

Edward Czarnecki, PhD
Senior Director - Strategy,  Development & Regulatory Affairs
Monroe Electronics / Digital Alert Systems

-----Original message-----
>From:Tom Taggart <tpt at literock93r.com>

>Dumb question: Capacity?

>What happens to the system when it tries to simultaneously
>reach a large number of cellphones to deliver this emergency
>message?

>I'll still loose AT&T service in downtown Columbus just
>because everyone is on their I-Phone at the same time.

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