I still have not been able to figure this one out. Any help will appreciated... Samuel a Seruser sent this link: http://www.b2bua.org/wiki/RTPproxy/FAQ Is this correct then: does it mean i need to replace the entry in the opensips.cfg script:modparam ("nathelper", "rtpproxy_sock",  "udp:localhost:2222") For:  modparam ("nathelper", "rtpproxy_sock", "unix:@l_prefix@/var/opensips/opensips_rtpproxy.sock1") modparam ("nathelper", "rtpproxy_sock", "unix:@l_prefix@/var/opensips/opensips_rtpproxy.sock2") modparam ("nathelper", "rtpproxy_sock", "unix:@l_prefix@/var/opensips/opensips_rtpproxy.sock"2) modparam ("nathelper", "rtpproxy_sock", "unix:@l_prefix@/var/opensips/opensips_rtpproxy.sock3")    ? and then run this: rtpproxy -l X.Y.Z.W -L 8192 -p /var/run/rtpproxy.pid -s /var/run/rtpproxy.sock -m 25000 -M 34999 rtpproxy -l X.Y.Z.W -L 8192 -p /var/run/rtpproxy1.pid -s /var/run/rtpproxy1.sock -m 35000 -M 44999 rtpproxy -l X.Y.Z.W -L 8192 -p /var/run/rtpproxy2.pid -s /var/run/rtpproxy2.sock -m 45000 -M 54999 rtpproxy -l X.Y.Z.W -L 8192 -p /var/run/rtpproxy3.pid -s /var/run/rtpproxy3.sock -m 55000 -M 64999   ?     Thanks. ----- Forwarded Message ---- From: Mundiline <mundiline(a)yahoo.com> To: serusers(a)iptel.org Sent: Tuesday, March 31, 2009 3:44:10 PM Subject: running rtpproxy on quad core processors Hi, I would like to run rtpproxy 1.2.0 on a  server with Quad-core dual Xeon processor and load balance the load across the 4 processors. Do you know how do I enable this feature pls. ( I am not an expert in this field so keep it simple pls. thanks) Thanks in advance Regards, Tony