<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><span class="Apple-style-span" style="-webkit-text-stroke-width: -1; ">Beyond that, looks like they rolled their own PBX and email. While they mention open source, it looks like its only for libraries, but not the total package (save the email client, as they do mention Thunderbird):</span></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="font-size: 13px; line-height: 18px;"><br class="webkit-block-placeholder"></span></font></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="font-size: 13px; line-height: 18px;"><a href="http://www.unison.com/opensource/">http://www.unison.com/opensource/</a></span></font></div></div></blockquote><br></div><div>It looks like they are using SIP Express Router for the VoIP portion of their product. Implementing a PBX with SER can be done, but SER does nothing with audio streams unless you are using something like RTPProxy or MediaProxy. In any case, it sounds like the PBX part might be a little light on features if that is their only back-end for it.</div><div><br class="webkit-block-placeholder"></div><div>Terry</div></body></html>