<div dir="ltr">So I have a freeswitch usecase that Im having trouble solving and would like the collective help of the community.<div><br></div><div>I have a customer who has a commercial PBX on site ... ( Supports SIP )</div>
<div><br></div><div style>However their network connectivity is quite bad at times, and there are no other options for connectivity. ( lets say they are a mine site or something remote like that )</div><div style><br></div>
<div style>SIP calls on this link sound pretty bad when they experience network issues ( mainly jitter & some loss ), BUT Skype calls sound pretty good. ( not perfect, but a LOT better than say G711, G729 or any other open standard VOIP Call )</div>
<div style><br></div><div style>What we considered doing is deploying a freeswitch box on their site, and one in a DC with reliable connectivity. have their PBX send G711 calls to the onsite freeswitch, and have freeswitch transcode this call to OPUS / SILK. send the OPUS / SILK over the bad network to the co-located freeswitch box, who will then trancode back to G711 and set the call to the PSTN network like normal.</div>
<div style><br></div><div style>The intention here is to leverage the Packet Loss Concealment baked into OPUS / SILK </div><div style>as I imagine that is what gives skype its ability to hide the audible effects of loss.</div>
<div style><br></div><div style>So far I have only set this up in a lab and used WANem to simulate loss, jitter, out of order packets. but ive found OPUS / SILK to be no better than G711 at covering loss.</div><div style>
<br></div><div style>I even tried with a 2 sec jitter buffer on both FS instances ( on each end ), which made no difference. </div><div style>I was expecting the jitter buffer to add more delay to the call, but it didnt even do this ... maybe I misconfigured something in the jitter buffers.</div>
<div style><br></div><div style>anyways.. I would like some help with this, has anyone tried doing anything similar to this and had success ?</div><div style><br></div><div style>-- <br></div><div>Sincerely<br><br>Jay Binks</div>
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