I'm a little confused here. I haven't used SST before so I'm sure I'm missing some background here.. But if I enable SST module, and set an expires at say, 120 seconds, don't I get an invite refresh roughly every 120 seconds? then if I don't I send a BYE out both ways. <br>
<br>What part of that may be unsupported. Part I'd be worried about is if I tell the UAC "Session-expires: 120" and it simply doesn't care, doesn't send the refresh and then BYEs get sent out and the dialog is torn down..<br>
<br>?<br>-Brett<br><br><br><div class="gmail_quote">On Thu, Mar 5, 2009 at 10:47 AM, Iņaki Baz Castillo <span dir="ltr"><<a href="mailto:ibc@aliax.net">ibc@aliax.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
2009/3/5 Brett Nemeroff <<a href="mailto:brett@nemeroff.com">brett@nemeroff.com</a>>:<br>
<div class="im">> Question, do SST help the situation? Is it widely accepted enough in the<br>
> protocol to provide some backup mechanism to maintaining dialog state in the<br>
> event of a lost BYE.<br>
<br>
</div>Sure, but keep in mind that a proxy CANNOT generate in-dialog<br>
requests, so SessionTimers must be suppoerted (and enabled) in caller<br>
and/or callee. If no one of them supports/uses SST then the proxy can<br>
do *nothing*.<br>
For example, a B2BUA *can* use SST in both legs to check the dialog<br>
state since a B2BUA behaves as a callee for the caller and as a caller<br>
for the callee. This is never possible with a proxy.<br>
<div class="im"><br>
<br>
> BTW, how is a BYE accounted for in ACC when generated locally because of an<br>
> expired dialog?<br>
<br>
</div>Use local_route to account it as any other BYE.<br>
<div class="im"><br>
--<br>
Iņaki Baz Castillo<br>
<<a href="mailto:ibc@aliax.net">ibc@aliax.net</a>><br>
<br>
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