Hi Jay I use the following dialstring to add a jitter buffer : � The wiki says the PLC is enabled by default when using a jitter buffer, but you can try this to be extra sure: Please let us know how you resolve this, as its a very interesting topic to those of us who live with not ideal connectivity. Regards Clive On Wed, 29 Jan 2014 09:00:12 +1000 jay binks wrote So I have a freeswitch usecase that Im having trouble solving and would like the collective help of the community. � I have a customer who has a commercial PBX on site ... ( Supports SIP ) � 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 ) � 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 ) � 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. � The intention here is to leverage the Packet Loss Concealment baked into OPUS / SILK as I imagine that is what gives skype its ability to hide the audible effects of loss. � 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. � I even tried with a 2 sec jitter buffer on both FS instances ( on each end ), which made no difference. 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. � anyways.. I would like some help with this, has anyone tried doing anything similar to this and had success ? � -- Sincerely Jay Binks ____________________________________________________________ South Africas premier free email service - www.webmail.co.za Cotlands - Shaping tomorrows Heroes http://www.cotlands.org.za/