<table cellspacing='0' cellpadding='0' border='0' background='none' style='font-family:arial;font-size:10pt;color:rgb(51, 51, 51);background-color:rgb(255, 255, 255);width:100%;'><tr><td valign='top' style='font: inherit;'>Hi: <br>How much cpu and ram is required for conference call service with 1 E1 link(30 zaptel ports) and 50 sip phones,to asterisk won't be disconnected during conference?<br>Regards. <br><br></td></tr></table><br>