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<td id="header-avatar-image-container" valign="top" style="padding: 0px; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 9px"><a href="https://wiki.asterisk.org/wiki/display/~gjoseph?src=email" style="color: #3b73af; text-decoration: none"><img id="header-avatar-image" class="image_fix" src="cid:avatar_56b2a47747d2721d6dcf26979b4b605a" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top" /></a></td>
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<td class="content-excerpt-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 0 24px"> <h1 id="PJSIPAdvancedCodecNegotiation-Preface" class="diff-block-target diff-block-context" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0"> <span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color: #ddfade;">Preface</span> </h1> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">This document is by no means complete and neither is the software as of July 15, 2020. There are still lots of things to implement and/or test.</span> </p>
<ul class="diff-block-target diff-block-context" style="margin: 10px 0 0 0">
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Multi-channel operation</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Direct Media</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Fax</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Deferred SDP</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Re-invites</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Dialplan function</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">etc.</span> </li>
</ul> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">We're still working on it.</span> </p> <h1 id="PJSIPAdvancedCodecNegotiation-Introduction" class="diff-block-context" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0">Introduction</h1> <p class="diff-block-context" style="margin: 10px 0 0 0">With the release of Asterisk 18 comes a new Advanced Codec Negotiation process. Not only does this create new configuration opportunities but also completely refactors the negotiation process itself. The result is an easier to understand negotiation process that's implemented in far less code. The PJSIP channel driver is currently the only one to adopt the new process but it other drivers could be altered to use it in the future. They would have to adopt the Streams interface however.</p> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> </td>
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