[EAS] CAP Polling Interval Questions

[Richard_Rudman]

I have a question for Al:

How much time will it take for a CAP message from a state input to get to the federal aggregator server and prepare it for "polling"?

As far an answer to one of Al's questions:

If we are talking about tornado or other highly time-critical warnings, I would submit that a five minute polling interval is too long. It would be interesting to see how people feel about this after the recent spate of serious tornadoes. For tornado-prone areas, maybe CAP-EAS boxes in those areas should poll every minute -- or more?

Richard Rudman

On May 10, 2011, at 8:48 PM, Al Kenyon wrote:

> So, what is the optimal polling interval for a CAP-EAS device?  As an
> engineer at heart I have a tendency to over-specify and, in this case that
> leads me to recommend a very short polling interval.  What do you think is
> the right number? And why?  
> 
> If all the stations in your market start out with a CAP polling interval of
> once every five minutes what happens if a competitor happens to air an alert
> two minutes before your station? 
> 
> Should stations in areas with different threats set their polling intervals
> differently?
> 
> Do you think management would care?  
> 
> What happens if one of your listeners is injured during that interval?
> 
> Can the various device vendors on this forum comment on a default polling
> interval?
> 
> As usual, all opinions are welcome.
> 
> Al Kenyon
> FEMA IPAWS Program Office
> 
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