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<h2><a href="https://wiki.asterisk.org/wiki/display/TOP/Asterisk+SCF+Use+Case+Discussion+-+Presence+Technology">Asterisk SCF Use Case Discussion - Presence Technology</a></h2>
<h4>Page <b>edited</b> by <a href="https://wiki.asterisk.org/wiki/display/~kpfleming">Kevin P. Fleming</a>
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<b>Comment:</b>
corrected spelling of participants' names<br />
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<h4>Changes (2)</h4>
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<tr><td class="diff-snipped" >...<br></td></tr>
<tr><td class="diff-unchanged" >Bryan Johns - Digium <br>Ken Hunt - Digium <br></td></tr>
<tr><td class="diff-changed-lines" >Mark <span class="diff-changed-words">Mich<span class="diff-deleted-chars"style="color:#999;background-color:#fdd;text-decoration:line-through;">a</span>elson</span> - Digium <br></td></tr>
<tr><td class="diff-unchanged" >Darren Sessions - Digium <br>Brent Eagles - Digium <br>David Lee - Digium <br></td></tr>
<tr><td class="diff-changed-lines" >Joshua <span class="diff-changed-words"><span class="diff-deleted-chars"style="color:#999;background-color:#fdd;text-decoration:line-through;">K</span><span class="diff-added-chars"style="background-color: #dfd;">C</span>olp</span> - Digium <br></td></tr>
<tr><td class="diff-unchanged" > <br>*Introduction of participants* <br></td></tr>
<tr><td class="diff-snipped" >...<br></td></tr>
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</div> <h4>Full Content</h4>
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<p><b>Presence Technology Use Case Discussion</b></p>
<p><b>January 11, 2011: 10:00 - 16:00 CST</b></p>
<p><b>Participants:</b></p>
<p>Alfredo Gonzalez - Presence<br/>
David Deaton - Digium<br/>
Kevin Fleming - Digium<br/>
Steve Sokol - Digium<br/>
Bryan Johns - Digium<br/>
Ken Hunt - Digium<br/>
Mark Michelson - Digium<br/>
Darren Sessions - Digium<br/>
Brent Eagles - Digium<br/>
David Lee - Digium<br/>
Joshua Colp - Digium</p>
<p><b>Introduction of participants</b></p>
<p><b>Company overview of Presence</b></p>
<ul>
<li>40,000 installed seats</li>
<li>Subsidiary of Spanish company that has 180m USD market cap</li>
</ul>
<p><b>Product overview of Presence</b></p>
<ul>
<li>OpenGate allows integration between Presence server and telephony environment via Asterisk</li>
<li>Larger market presence in Latin American countries</li>
<li>Originally built for Avaya switching integration. OpenGate added the ability to bridge to other environments.</li>
<li>Platform sold as both a premises and hosted architecture</li>
</ul>
<p><b>Historical Asterisk Use / Integration</b></p>
<ul>
<li>Uses Asterisk as bridge between Presence and PBX environments</li>
<li>Experienced significant performance issues with app_queue</li>
</ul>
<p><b>Current Challenges</b></p>
<ul>
<li>Uses OpenSER-facilitated server clustering for expanding ACD beyond 200 seats, but this causes call accounting challenges</li>
</ul>
<p><b>Brief Digium Q&A with Alfredo</b></p>
<p><b>Kevin Fleming:</b> "Do you see a preference for implementation in a gateway design or a stand-alone design?"</p>
<p><b>Alfredo:</b> "We want to do whatever the customer prefers, but our focus is on deploying OpenGate."</p>
<p><b>Brief Digium Overview</b> - Bryan Johns</p>
<p><b>Asterisk SCF Overview</b></p>
<p>Where did Asterisk SCF come from? - Kevin Fleming</p>
<p>Asterisk SCF birthed to address fundamental limitations of the original Asterisk design</p>
<p>Description of ICE usage and theoretical value thereof</p>
<p><b>Alfredo:</b> "What is the future business model of Digium?"</p>
<p><b>Bryan:</b> "Cannot answer that too specifically at this time, but Digium intends to leave the bulk of the business logic layer to ecosystem partners in Asterisk SCF"</p>
<p><b>Alfredo</b> expresses concern over a lack of business logic capability in Asterisk SCF as a shorter-term solution for use by Presence.</p>
<p><b>Kevin Fleming</b> furnishes Asterisk SCF functional diagram and reviews division between application-layer and functional-layer capabilities.</p>
<p><b>Lunch break: 1205 - 1330 CST</b></p>
<p><b>Presence Use Case Discussion</b></p>
<p><b>Alfredo</b> delivers a presentation summarizing current use concerns / needs</p>
<p><b>Kevin:</b> "I assume that you never have more than 2 participants in a meetme?"<br/>
<b>Alfredo:</b> "No. We use meetme for whisper, barge, recording, etc."</p>
<ul>
<li>Mixing of audio / audio bridging is defined as a requirement</li>
<li>Kevin gives explanation of conf_bridge as an alternative to app_meetme</li>
</ul>
<p><b>Presence Technology Stated Requirements</b></p>
<ul>
<li>Audio mixing / bridging capability</li>
<li>VM-friendly architecture</li>
<li>Geographically dispersed active/active, multinode capability</li>
<li>State replication capability</li>
<li>Load-balancing / Fail-over manipulation or control capability</li>
<li>Network regions <img class="emoticon" src="/wiki/images/icons/emoticons/help_16.gif" height="16" width="16" align="absmiddle" alt="" border="0"/> - ability to assign attributes by geography - see previous entry</li>
<li>CODEC implementations for all with highest quality / highest compression</li>
<li>Some improved implementation of mixmonitor - ability to fork recordings / divide calls - increase performance</li>
<li>Mimic Avaya's call recording/tracking capabilities</li>
<li>Native MRCP support for ASR/TTS</li>
<li>Engine for call classification (dialer-specific functionality)</li>
<li>Presence engine (XMPP) integrated with multi-channel ACD</li>
</ul>
<p><b>Kevin:</b> "Can you define the ways and means by which you interface with AMI and in what langauge / platform do you do it?"<br/>
<b>Alfredo:</b> "We use C++/Linux today. Would prefer to use Windows if performance is acceptable. Smaller companies don't as readily accept Linux/UNIX. Our main application currently DELPHI but being migrated to .NET."</p>
<p><b>Kevin</b> supplies an overview of direct, native-language interface with Asterisk SCF APIs vs AMI/AGI translation</p>
<p><b>Bryan</b> brings up example of state replication as potential game-changer in Presence product design.<br/>
<b>Alfredo</b> expresses that value exists there if it is in the comms layer and not in the application layer</p>
<p>Continued discussion specific to Asterisk SCF proposed boundary and proposed functionality. Further review of the Asterisk SCF functional diagram.</p>
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