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[aprssig] Echolink Offline meaning

Robert Bruninga bruninga at usna.edu
Wed Jul 22 17:10:01 UTC 2009


Thanks Stephen,

So to summarize?

"Offline" means that the server that is providing this list of
Echolink STATUS generates this status when it has timed out from
hearing that station.  And/or presumably if the station itself
reports same.

I guess then, I'd vote for  having Lynn's Echolink object server
send out a KILL object when a station goes offline.  (later on,
we can readdress this, if too many of these are generated and
they become a nuisance).

Also we need someone to confirm what a D7, D700 and D710 and
VX-8R or HAMHUD do with a kill object.  Do they make it
disapplear from the list, or just change some flag?

Bob, Wb4APR
 

> -----Original Message-----
> From: Stephen H. Smith [mailto:wa8lmf2 at aol.com] 
> Sent: Wednesday, July 22, 2009 12:26 PM
> To: bruninga at usna.edu; TAPR APRS Mailing List
> Subject: Re: [aprssig] Gating Objects from Internet to RF
> 
> Robert Bruninga wrote: 
> 
> 		Also, if you look at "phase 2", you could kill 
> objects that 
> 		go offline.
> 		    
> 
> 	
> 	Can someone define "offline" in the Echolink sense?
> 	
> 	  
> 
>  It means you are not running the Echolink software.   
> 
> Each time you start up the program, it logs into the Echolink 
> server and reports that a particular copy of Echolink (i.e. 
> callsign)  is connected to the Internet and available to be 
> contacted.   [This is what makes your call show up in the 
> list of stations that you can browse inside Echolink.]  
> 
> Every so many minutes, the local software contacts the server 
> to download an updated list of stations currently online. 
> This also confirms to the server that the program is still up 
> and running.    This update rate is user-configurable 
> (default is every 300 seconds) and is a tradeoff between 
> bandwidth usage and timely updates of" whos on".  I'm not 
> certain, but I think the client software also does some sort 
> of periodic "heatbeat ping" to the server to confirm the 
> client is still online, even if the update rate is disabled 
> (which is a user option). 
> 
> When you exit the software, (or Windows crashes or reboots) 
> the associated callsign will be purged from the list of 
> active stations if the server doesn't hear an update request 
> within a certain time interval.)
> 
> This causes you to be "offline".  
> 
> 
> 
> --
> 
> Stephen H. Smith    wa8lmf (at) aol.com 
> EchoLink Node:      WA8LMF  or 14400    [Think bottom of the
2M band]
> Skype:        WA8LMF
> Home Page:          http://wa8lmf.net
> 
> JavAPRS Filter Port 14580 Guide 
>   http://wa8lmf.net/aprs/JAVaprsFilters.htm
> 
> "APRS 101"  Explanation of APRS Path Selection & Digipeating 
>   http://wa8lmf.net/DigiPaths 
> 
> Updated "Rev H" APRS            http://wa8lmf.net/aprs
> Symbols Set for UI-View, 
> UIpoint and APRSplus:
> 
> 
> 
> 
> 
> 
> 
>  
> 
> 
> 
> 




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