<div><div dir="auto">Back in the day (circa 1995) we used DSPs to detect ring tone. We’d block the 200 until the ring back stopped and we got some _other_ audio profile... it might be an overkill, tho.</div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 2 Mar 2020 at 14:00, Avi Marcus <<a href="mailto:avi@avimarcus.net">avi@avimarcus.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir="ltr">I've yet again had users reporting issues and I found it there's FAS.<div>I'd like to find or create something that notices and logs these issues immediately, before potentially weeks of customers experiencing degraded service. Before I re-invent the wheel, I'm asking if someone has a wheel around.<br><div><br></div><div>I looked at these particular PCAPs and the ringing is quite clear to hear.</div><div>Is there some scripts around that can flag calls, either based on simply the CDR or even with the PCAP as FAS? (e.g. FAS calls will rarely be over 2 minutes.)</div><div><br></div><div>(Although, apparently there's many types of FAS. One more is to play a ring tone for 10-20 seconds and THEN try to connect the call. That way they get at least free 20 seconds of billable time and then proceed with business as usual.)</div><div><br></div><div><a href="https://blog.kolmisoft.com/fraud-false-answer-supervision-fas/" target="_blank">https://blog.kolmisoft.com/fraud-false-answer-supervision-fas/</a> mentions key indicators in the CDR, but this isn't enough to definitely pin it as FAS. This could also occur upon reaching voicemail.<br><ul><li>Short phone calls.</li><li>A caller which hangs up nearly 100% of the time.</li><li>High answer seizure ratio.</li><li>Lower ACD.</li></ul></div><div>They also mention this, which is what I'm interested in: "RTP audio signal processing: detection of voice, silence or ring-back tone."</div><div><br></div><div>Is there some simple way to detect ring tones in the audio playback (which I might have to cut to ensure it's after the billing has actually started if the audio ring tone was passed in band)</div><div><br></div><div><br></div><div>Thanks,</div><div><br clear="all"><div><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">-Avi Marcus<br>BestFone</div></div></div></div></div></div></div></div>
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<a href="https://freeswitch.com" rel="noreferrer" target="_blank">https://freeswitch.com</a></blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Regards,</div><div><br></div>David Villasmil<div>email: <a href="mailto:david.villasmil.work@gmail.com" target="_blank">david.villasmil.work@gmail.com</a></div><div>phone: +34669448337</div></div></div>