[EAS] FW: Max Length of EAS Messages

[Clay Freinwald]

Thanks Amy - 

I am certain that in some instances sources of the public warning messages
will only wish to have to deal with - one version- as opposed to having to
write it differently for different distribution methods.

Granted the difference in  messages length between CMAS and EAS is an issue
that needs to be sorted.

The Washington State SECC, attempting to be proactive, is working with these
issues now.

This message should be written in Text and that text message (in my opinion)
should be - READ - by a Text Reader for those systems (Radio, TV and Cable
Aural etc) that need to 'hear' it.

Clay Freinwald
WaState SECC

-----Original Message-----
From: eas-bounces at radiolists.net [mailto:eas-bounces at radiolists.net] On
Behalf Of Amy Sebring

A single CAP alert may be used for relay to both EAS and CMAS if it meets
the criteria of both systems.  The CMAS message is derived from the CAP
elements that Ed describes, while the EAS message is derived from the
description and instruction elements.

There is also a headline element that could be used locally from the same
CAP alert to trigger other alerting systems such as signs, Tweets, etc.

The idea is one alert, many channels.

ajs

Ed Czarnecki wrote:

>Clay and Jim - The CMAS message may well be a separate message from the 
>EAS one.  A CMAS Alert Message processed by a mobile carrier is limited 
>to 90 alphanumeric text characters.  The CMAS protocol message is 
>generated by the IPAWS aggregator/gateway information CAP message 
>received from the state/county/local alert originator..
>
>So, while CAP will be delivered to TV/Radio/Cable EAS Participants, the 
>mobile carriers will get a separately formatted CMAS protocol message.  
>CAP is not delivered to the mobile carrier gateway, nor to the mobile
device.
>Also, not all "EAS" alerts would meet the threshold of getting CMAS 
>status (only presidential and "imminent threat to life & property").
>
>One way to look at is that the CMAS alert is intended to get people 
>attention of a person with a very basic alert.  The person would then 
>be implicitly expected to seek out other media for confirmation of the 
>alert and more information.
>
>The CMAS formatted alert would be constrained - within 90 characters - 
>to the following content:
>- event type or category
>- area affected
>- response description (i.e. "shelter" or "evacuate")
>- Expiration time (as e.g. "until 11:30 PM EDT)
>- Sending agency
>
>Here is a link to an image on the Aware Forum capturing a CMAS test 
>message from NYC on 2/16/12:
>http://www.freedomsphoenix.com/Uploads/145/Graph/Alertmsg.jpg
>
>Image appears to be a Droid X2 on the Verizon network.
>
>  
>

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