Date: Mon, 1 Oct 2007 15:32:48 +0100

X-MS-TNEF-Correlato create one based on
   the source IP and Port.  How does the proxy ensure that the same
sigcomp-id
   will be used for the next message from Alice?  Will it always use source
IP
   and Port as a remote application identifier?

2. Bob registers with example.com. It will carry a valid remote application
   identifier in sigcomp-id parameter of Via header and SIP URI of Contact
   header (Created by Bob).  The proxy will use the same identifier. Is this
   correct?

          --Ravi

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Coming Soon: Signature 2.0 (Beta)

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<span class="gmail_quote"></span>The draft, draft-ietf-rohc-sigcomp-sip-08.txt does not have call flows<br>(Ofcourse, I know its Standards Track draft) . So I was not able to understand<br>when a UE or Proxy creates the remote application identifier and adds
<br>sigcomp-id to SIP URI or Via header.<br><br>Can anyone explain if my understanding is correct with respect to the following<br>call flow.<br><br>Both Alice &amp; Bob belong to same proxy <a href="http://example.com">example.com
</a>. But Alice is not compliant<br>to draft-ietf-rohc-sigcomp-sip (It will not create remote application<br>identifier).<br><br>1. Alice registers with <a href="http://example.com">example.com</a>.&nbsp;&nbsp;Now remote application identifier will
<br>&nbsp;&nbsp; not be available at <a href="http://example.com">example.com</a>, hence the proxy will create one based on<br>&nbsp;&nbsp; the source IP and Port.&nbsp;&nbsp;How does the proxy ensure that the same sigcomp-id<br>&nbsp;&nbsp; will be used for the next message from Alice?&nbsp;&nbsp;Will it always use source IP
<br>&nbsp;&nbsp; and Port as a remote application identifier?<br><br>2. Bob registers with <a href="http://example.com">example.com</a>. It will carry a valid remote application<br>&nbsp;&nbsp; identifier in sigcomp-id parameter of Via header and SIP URI of Contact
<br>&nbsp;&nbsp; header (Created by Bob).&nbsp;&nbsp;The proxy will use the same identifier. Is this<br>&nbsp;&nbsp; correct?<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--Ravi<br><br>--<br>Coming Soon: Signature 2.0 (Beta)<br><br>

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