That's signalling and proxying media for most of the calls; no transcoding beyond u-law <-> A-law. --Dave From: Andrew Dixon [mailto:adixon at artjconsultants.com] Sent: 19 February 2013 20:18 To: David Knell Cc: Grant Baxley; voiceops at voiceops.org Subject: Re: [VoiceOps] Session Border Controllers Can the vm handle transcoding or is it primarily sip signaling? On Tuesday, February 19, 2013, David Knell wrote: Hi Grant - We use FreeSWITCH running on CentOS, virtualised with OpenVZ. The largest instances run up to 4,000 sessions (=2,000 concurrent calls) and have peaked at over 40 calls/sec; they use less than half of an i7-3770 CPU at this level. --Dave From: voiceops-bounces at voiceops.org <javascript:_e(%7b%7d,%20'cvml',%20'voiceops-bounces at voiceops.org');> [mailto:voiceops-bounces at voiceops.org <javascript:_e(%7b%7d,%20'cvml',%20'voiceops-bounces at voiceops.org');> ] On Behalf Of Grant Baxley Sent: 19 February 2013 18:58 To: james jones Cc: voiceops at voiceops.org <javascript:_e(%7b%7d,%20'cvml',%20'voiceops at voiceops.org');> Subject: Re: [VoiceOps] Session Border Controllers 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 <javascript:_e(%7b%7d,%20'cvml',%20'james.voip at gmail.com');> ] Sent: Tuesday, February 19, 2013 1:56 PM To: Grant Baxley Cc: voiceops at voiceops.org <javascript:_e(%7b%7d,%20'cvml',%20'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 -- Sent from Gmail Mobile