[App_rpt-users] Node Disconnect

[Jim Duuuude]

sure...

Normally, when a link is established, the originating end will try to 'maintain
its connection, within reason'. 

The IAX2 protocol is utilized to provide end-to-end connectivity between
nodes. As with any VOIP protocol, there are many ways in which the protocol
may be used. A 'traditional' phone call over IAX2 uses its facilities in a fairly
cannonical and predictable manner. Our use of those facilities differs in many
ways (which is one reason why you just cant connect an IAX2 phone client
directly to a node the same way another node connects).

>From the standpoint of the node that originates the connection, if a disconnection
of the IAX2 protocol session is detected, it will retry, periodically, a few times
before "giving up" (officially determining that the connection to the node has dropped
and announcing this fact).

Since detection of a disconnect at the protocol level does not *necessarily*
indicate termination of the link, a message is sent prior to intentional termination
to indicate that the disconnection is *really* a disconnection, and to not retry.

A "Permalink" acts exactly the same way, except that if non-intentional disconnect
is detected, it keeps retrying, forever, and ever, and ever....  This only is in effect
if the connection was able to be established in a normal way initially. In other words,
if you make a permalink connection to a node that doesnt respond, it wont keep trying,
but if you make a connection, and its then lost, it will keep retrying. 

> From: dpowellwilliams at shaw.ca
> To: app_rpt-users at qrvc.com
> Date: Sat, 17 Jul 2010 07:46:40 -0700
> Subject: Re: [App_rpt-users] Node Disconnect
> 
> Jim Duuuuuude:
> 
> Any chance you could elaborate a tad on the differences between a
> 'permalink' and a normal link? Such as what each do (or don't do)
> specifically?
> 
> Any other 'doo-doo' on this topic would be of interest to your audience, I'm
> sure :)
> 
> Cheers & 73,
> 
> Dave
> VE7MQ
> 2140
> 
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