Hello, -- I am currently working on video conference module in freeswitch-1.6.5 -- I am using verto client for confernece (i configured just 3 verto users in different hosts) and when i dial 3500 extension from the verto user, the conference is starting but the main problem is if 3 users connected with the 3500 conference, the audio is gone(too much noice, no audio clearence) and CPU usage is reached to 150%+ and i follow below configuration also ulimit -c unlimited # The maximum size of core files created. ulimit -d unlimited # The maximum size of a process's data segment. ulimit -f unlimited # The maximum size of files created by the shell (default option) ulimit -i unlimited # The maximum number of pending signals ulimit -n 999999 # The maximum number of open file descriptors. ulimit -q unlimited # The maximum POSIX message queue size ulimit -u unlimited # The maximum number of processes available to a single user. ulimit -v unlimited # The maximum amount of virtual memory available to the process. ulimit -x unlimited # ??? ulimit -s 240 # The maximum stack size ulimit -l unlimited # The maximum size that may be locked into memory. ulimit -a # All current limits are reported. i am using using Centos 6.5 with 4GB Ram. Could you any one help me to resolve this problem, i want to know following thigs --> Video confernece configuration --> Required system configuration --> and also i would like to know how many possible video conferences can be handle by freeswitch-1.6.5 Please help me. -- Thanks & Regards Veerabhadrarao Kankatala