CSTA over SIP is used by LCS and would be a fantastic addition for Asterisk. <br>
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The spec is documented as TR-087 on the EMCA web site. The more common name for this is uaCSTA.<br>
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uaCSTA is being added by Mitel, Nortel, Siemens. <br>
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If uaCSTA is in line with what your doing then I'm willing to help with the effort.<br>
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Mark.<br><br><div><span class="gmail_quote">On 9/28/05, <b class="gmail_sendername">John Todd</b> <<a href="mailto:jtodd@loligo.com">jtodd@loligo.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>I've recently started to get involved in proprietary controls for<br>existing PBX platforms, and I've run across a standard which may have<br>some interest to those of you on this list. The CSTA (Computer<br>Supported Telecommunications Applications) seems to be very similar
<br>to (depending on your views) the Manager Event interface, or AGI.<br>While I don't suggest that either of those two existing interfaces is<br>sub-standard, I would love to hear from anyone with more experience<br>with CSTA about why it is a better or worse protocol for interaction
<br>with Asterisk. It seems (again) that there is a standard that exists<br>for interfacing a PBX (or other telephony switching system) to<br>external applications on a different platform. Perhaps even some of<br>the established applications support CSTA in enterprise environments
<br>might be able to be linked to Asterisk quickly via this method (I<br>know that Envox <a href="http://www.envox.com/">http://www.envox.com/</a> uses CSTA - anyone else?)<br><br>While there is very little "real example" data in these documents,
<br>the documentation is at least reasonable. I'd love to see a human<br>(versus an ITU participant) explain how this actually works, and<br>provide a serial data exchange in a ladder diagram for a few examples.<br><br>A CSTA interface module might be useful for patching Asterisk into
<br>existing platforms that use CSTA controls; places that Avaya, Nortel,<br>Siemens, and others now have exclusive domain. A "swap-out" is a lot<br>more appealing than saying "You'll have to write a glue layer to
<br>interface to this new system."<br><br><a href="http://www.ecma-international.org/activities/Communications/TG11/cstaIII.htm">http://www.ecma-international.org/activities/Communications/TG11/cstaIII.htm</a><br><a href="http://www.dragonnorth.com/tsapi/reference.html">
http://www.dragonnorth.com/tsapi/reference.html</a><br><br>JT<br>_______________________________________________<br>Asterisk-Dev mailing list<br><a href="mailto:Asterisk-Dev@lists.digium.com">Asterisk-Dev@lists.digium.com
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