[Outages-discussion] [outages] IPAWS/FEMA National Test - VoWIFI

[Sean Donelan]

CMAS/WEA is only broadcast on the cellular over-the-air control channels.
WEA is not broadcast over WiFi, VoWIFI, IP streaming or any other channel.

This is "expected" and as designed by ATIS and GSM protocols.

Likewise, EAS is only broadcast on broadcast, cable and satellite radio 
and television channels.  EAS is not broadcast over Internet streaming 
or VOD channels, unless in-band with the programming.

Again is "expected" and as designed by SBE and CableLabs protocols.

Some smart speakers (Amazon) include notifications for some severe 
weather alerts.  They do not carry other EAS/WEA alerts.  Smart speakers 
use proprietary protocols

Some search engines (Google) include some alerts on geographic search 
terms. It seems to vary.  They do not carry general EAS/WEA alerts.


On Wed, 4 Oct 2023, Jay R. Ashworth via Outages wrote:
> Is anyone on the list involved with the FEMA/IPAWS/CMAS link, or knows someone
> who is, and has a channel to clear this query up through?
>
> I could be unsurprised to find that the carrier VoWIFI proxies missed out on
> proxying SMS Cell Broadcast, which I gather provides the underlying PHY for
> CMAS.