Looking to offer hosted pbx services to your clients , must check ICTInvoice , an Elastix module  <a href="http://www.ictinnovations.com/content/ictinvoice-complete-multitenant-hosted-pbx-solution-service-providers">http://www.ictinnovations.com/content/ictinvoice-complete-multitenant-hosted-pbx-solution-service-providers</a><br>
<br><br clear="all">Nasir Iqbal<br><br>ICTBroadcast<div>SMS, Fax and Voice broadcasting solution</div><div><a href="http://www.ictbroadcast.com/" target="_blank">http://www.ictbroadcast.com/</a><br></div><br>