I had this EXACT problem on a single (or maybe dual??) core, single CPU FS box. I upgraded to QUAD core system and the problem went away immediately. Mine was not on every call, but if there were just a few concurrent calls it would happen. That is what led me to the "lack of resources" conclusion. In my case you could see in the FS log a 5 second or longer delay in the actual connection of the RTP. I have seen people give stats about FS handling thousands of calls per second. I have often wondered if they checked to see how long it took to actually connect the RTP channels in those tests. I am highly skeptical. But I have no issues on a single QUAD core system. From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Blake Priddy Sent: Monday, January 14, 2013 9:46 AM To: FreeSWITCH Users Help Subject: [Freeswitch-users] Delay Round Two...FIGHT! Ok everyone, hope your new years went wonderful! So here is the situation again. THE DELAY IS BACK! I have wiped FS and installed the latest git head and the delay is still present. I want to eliminate all FS options that could fix it before I call AT&T. Any help is appreciated! Person from outside the school calls, secretary answers, secretary hears they person saying hello, secretary says hello over and over again for 10 seconds. Then the B-Leg audio finally is heard by the A-LEG. Note* The B-Leg (secretary) can hear the A-leg talking the whole time. Just the A-Leg cannot hear the (secretary) B-Leg until about 7-13 seconds has passed. I see nothing in the FS log after the audio from the B-Leg finally traverses to the A-Leg. Please help our school fellow FS users! LONG LIVE FS!!! :) -- <http://dl.dropbox.com/u/6313391/BryantSchoolDist_Seal_final%20(1).png> Blakelund Priddy Network Systems Engineer Bryant Public School District Bryant, Arkansas 72022 <http://www.bryantschools.org/> http://www.bryantschools.org p 501-653-5038 f 501-847-5656