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<p><b>1. dialog uniqueness</b><br>
</p>
<p> Alice calls Bob</p>
<p> ->INVITE</p>
<p> call-id: 1<br>
</p>
<p> from: alice@atlanta;tag=1</p>
<p> to: bob@boston</p>
<p> <- 200 <br>
</p>
<p> call-id: 1<br>
</p>
<p> from: alice@atlanta;tag=1</p>
<p> to: bob@boston;tag=2</p>
<p> -> ACK</p>
<p> call-id: 1<br>
</p>
<p> from: alice@atlanta;tag=1</p>
<p> to: bob@boston;tag=2</p>
<p>Bob does a session refresh</p>
<p> <- INVITE <br>
</p>
<p>question in on the from tag and the to tag. <br>
</p>
<p>should it be</p>
<p> <- INVITE <br>
</p>
<p> callid: 1<br>
</p>
<p> from: alice@atlanta;tag=1</p>
<p> to: bob@boston;tag=2</p>
<p>or <br>
</p>
<p> <- INVITE</p>
<p> call-id: 1<br>
</p>
<p> from: alice@atlanta;tag=1
</p>
<p> to: bob@boston;tag=2</p>
<p>or <br>
</p>
<p> are both the same dialog (call-id + the 2 tags) ?</p>
<p><br>
</p>
<p><b>2. reinvite</b><br>
</p>
<p>Secondly, <br>
</p>
<p>when opensips is used as b2bua scenario as below <br>
</p>
<p><br>
</p>
<p>A opensips B <br>
</p>
<p> -> invite ->invite <br>
</p>
<p> <-200 <- 200</p>
<p> -> ack ->ack</p>
<p> ... .... <br>
</p>
<p> <-reinvite for
keeeping session alive. <br>
</p>
<p>Is there a way that I can let respond opensips 200 OK on the
reinvite without forwarding the request to A ? <br>
</p>
<p>so I want <br>
</p>
<p>A opensips B <br>
</p>
<p> -> invite ->invite <br>
</p>
<p> <-200 <- 200</p>
<p> -> ack ->ack</p>
<p> ... .... <br>
</p>
<p> <-reinvite for
keeeping session alive. <br>
</p>
<p> ->200</p>
<p><br>
</p>
<p>instead of <br>
</p>
<p>A opensips B <br>
</p>
<p> -> invite ->invite <br>
</p>
<p> <-200 <- 200</p>
<p> -> ack ->ack</p>
<p> ... .... <br>
</p>
<p> <-reinvite for
keeeping session alive. <br>
</p>
<p> <- reinvite <br>
</p>
<p> -> 200 ->200</p>
<p><br>
</p>
<p>wkr, <br>
</p>
<p></p>
<p><br>
</p>
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