Have you looked at Kamailio? We love it and it handles much higher volumes than you require. We are also running on centos. Sent from my iPhone On Feb 19, 2013, at 11:00 AM, "Grant Baxley" <GBaxley at hostinfinity.com<mailto:GBaxley at hostinfinity.com>> wrote: 200 concurrent calls would be a good start with 20 calls a second. If there is a platform that can be virtualized on my current equipment, that would be the preferred method. We have a high available cloud that currently runs many Centos virtual PBX instances. Thanks, R. Grant Baxley President & CEO Infinity Computer Solutions 813 W Platt St. Tampa, FL 33606 Toll Free: 1.888.287.9198 Local: 813.319.3704 From: james jones [mailto:james.voip at gmail.com] Sent: Tuesday, February 19, 2013 1:56 PM To: Grant Baxley Cc: voiceops at voiceops.org<mailto:voiceops at voiceops.org> Subject: Re: [VoiceOps] Session Border Controllers How many concurrent calls? How many calls per second? On Tuesday, February 19, 2013, Grant Baxley wrote: I am looking to implement a cost effective session border controller. Can anyone point me in the right direction? We would need to be able to route calls to and from different IP addresses based on source and destination. Thanks, R. Grant Baxley President & CEO Infinity Computer Solutions 813 W Platt St. Tampa, FL 33606 Toll Free: 1.888.287.9198 Local: 813.319.3704 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org<mailto:VoiceOps at voiceops.org> https://puck.nether.net/mailman/listinfo/voiceops