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</o:shapelayout></xml><![endif]--></head><body lang=DE-AT link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>New release will bring improved fraud checking against month or day period limits of customer call costs or reseller call costs.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Also call count period limits could be considered, as you suggested.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The fraud checks are evaluated close after rating a postpaid call, and will no longer have performance/db load limitations.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>br<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=DE style='mso-fareast-language:DE-AT'>Von:</span></b><span lang=DE style='mso-fareast-language:DE-AT'> Spce-user [mailto:spce-user-bounces@lists.sipwise.com] <b>Im Auftrag von </b>Raul Alonso<br><b>Gesendet:</b> Mittwoch, 10. Juli 2019 10:42<br><b>An:</b> spce-user@lists.sipwise.com<br><b>Betreff:</b> [Spce-user] Call Controls for fraud detection<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=ES>Hello,<o:p></o:p></span></p><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p><p class=MsoNormal><span lang=ES>We are trying to activate some extra security measures in our proxy, we have some clients that by volume we are not interested in limiting neither the number of channels or the daily credit limit.<o:p></o:p></span></p><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p><p class=MsoNormal><span lang=ES>This means that if anyone get the SIP account credentials or enter the end customer's PBX they can make many simultaneous calls. <o:p></o:p></span></p><p class=MsoNormal><span lang=ES>Also as the credit limit does not jump until the call has ended it translates that the $$ hole can be very large.<o:p></o:p></span></p><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p><p class=MsoNormal><span lang=ES>To secure this point we have made a small script that runs every minute:<o:p></o:p></span></p><p class=MsoNormal><span lang=ES>With the command /usr/sbin/ngcp-kamctl proxy fifo dlg_list, we check the number of international calls and the destinations, if we detect more than one simultaneous call to the same destination we cut these calls with the command /usr/sbin/ngcp-kamctl proxy fifo dlg_end_dlg.<o:p></o:p></span></p><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p><p class=MsoNormal><span lang=ES>We are looking for a way to improve this script. Is there any way to control the number of calls and hang up the ones we think are potentially dangerous from the API?<o:p></o:p></span></p><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p><p class=MsoNormal><span lang=ES>Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=ES>Raul.<o:p></o:p></span></p><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p></div></body></html>