[EAS] CAP Polling Interval Questions

Harold Price hprice at sagealertingsystems.com
Wed May 11 09:22:47 CDT 2011


Do you have any data on packet limits for cable modems?  Do they 
limit on number of packets, or number of bytes?

A poll could be as simple as 6 very short packets. In bytes, per day, 
it is the equivalent of three minutes of streaming audio at 64kbps.

There are several ways to multicast push, via satellite, datacast on 
TV, etc.  There are costs associated with that as well, of course.

Harold

At 08:19 AM 5/11/2011, Eric Adler wrote:
>This discussion of routing has me thinking again:
>Why a polling system?  Why not a push system?
>
>Also, I see problems for stations with cable modems hitting their 
>packet-limit and dropping packets (which may affect the station's 
>existing traffic and/or the CAP retreival traffic, causing 
>additional delays).  If they want to require a robust network 
>connection, they should be providing it.  Otherwise, why not simply 
>mass push the messages to broadcasters (and other low-latency media) 
>via satellite?
>
>Eric
>
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