Thanks Joao<br><br>Yes, language selection depends on what we want to do. Currently, we are using python stackless for running multi-threaded IVR in FreeSWITCH but we are not happy :(<br>
<br>Similarly, I am note sure about multi-threading in Lua. <br><br>Multi-threading in C is stable. I am also wondering if the built-in XML engine runs on the same FreeSWITCH thread as the incoming call ?<br><br>Why have you found a need to run the IVR on a different box than the FreeSWITCH server? We currently run the IVR on the Media server itself (which is FreeSWITCH). We are taking incoming / outgoing calls over PRI/E1. Even when we change to SIP calls, the media server itself can run both FS and the IVR. What could be an advantage in doing it on separate machines ?<br>
<br>Thanks. <br><br clear="all">regards,<br>Anita<br><br>
<br><br><div class="gmail_quote">On Fri, Feb 24, 2012 at 11:58 AM, Joćo Mesquita <span dir="ltr">&lt;<a href="mailto:jmesquita@freeswitch.org">jmesquita@freeswitch.org</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

                <div style="font-family:&#39;Courier New&#39;;font-size:13px">In my opinion, the language you are using pretty much depends on the project requirements. C will always be faster then anything else if implemented correctly. Also, there is advantages of using native APIs (no matter with ESL or as a module).<div>
<br></div><div>Nonetheless, the implementation is more complex, requires more knowledge and at last and most important, TIME. Do you have the time and resources to do it in C and will it be justified based on the project budget you have?</div>
<div><br></div><div>Other then that, I would use ESL because you get the benefit of having your application running on another box and even have it control several boxes at once which is a common requirement for large IVRs.</div>
<div><br></div><div>I hope it helps.</div><div><br></div><div>Regards,</div></div><span class="HOEnZb"><font color="#888888">
                <div><div><br></div><div>-- </div><div>Joćo Mesquita</div><div>Sent with <a href="http://www.sparrowmailapp.com/?sig" target="_blank">Sparrow</a></div><div><br></div></div></font></span><div class="HOEnZb">
<div class="h5">
                 
                <p style="color:#a0a0a8">On Friday, February 24, 2012 at 4:29 AM, Vitalie Colosov wrote:</p>
                <blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px">
                    <span><div><div>Why not to use powerful and fast lua scripts with DB access - example for DB select:<div>------------------------</div><div><div>subscriber = &quot;1000&quot;;</div><div>my_field = &#39;&#39;;</div>
<div>local dbh = assert(freeswitch.Dbh(&quot;db&quot;,&quot;fs_user&quot;,&quot;fs_password&quot;));</div>
<div>dbh:query(&quot;select my_field1 from my_table1 where subscriber = &#39;&quot;..subscriber..&quot;&#39;&quot;, </div><div>function(row) </div><div><span style="white-space:pre-wrap">	</span>my_field = row.my_field1;</div>

<div>end);</div><div>dbh:release();</div><div>--do whatever you need here!!</div><div>------------------------</div><div><br></div><div>obviously you need to configure ODBC for access, but this is described:</div><div><a href="http://wiki.freeswitch.org/wiki/Using_ODBC_in_the_core#CentOS_5.2" target="_blank">http://wiki.freeswitch.org/wiki/Using_ODBC_in_the_core#CentOS_5.2</a></div>

<div><br></div><br><div>2012/2/23 Anita Hall <span dir="ltr">&lt;<a href="mailto:anita.hall@simmortel.com" target="_blank">anita.hall@simmortel.com</a>&gt;</span><br><blockquote type="cite"><div>
Hi<br><br>We are considering writing our own module for processing IVR in C. We are considering using mod_event_socket and then modify it to consume and produce the events internally instead of passing them to the socket. Is this a good idea?<br>


<br>I know FreeSWITCH already has a mod_dialplan_xml which can use mod_curl to communicate to the outside world for I/O and DB access. But ...<br><br>1) Does XML have all the power flexibility that will be needed for powerful IVR applications? <br>


<br>2) Does mod_dialplan_xml use a separate thread for each IVR execution ? What will be the overhead of interpreting the XML ?<br><br>3) Any more ideas ?<br><br>Thanks :)<br><br clear="all">regards,<br>Anita<br><br>
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