On Wed, 17 Jun 2009, Steve Totaro wrote: > Hi, > > Quick question to the real world. > > Approx what specs would I need on server to handle 95 ZAP or Dahdi -> SIP > gateway using G729 on the SIP to carrier side (nothing else, just media > conversion)? > > Does the latest Asterisk/DAHDI significantly improve these numbers over say, > Asterisk 1.2.X? > > Sure, there is plenty to read but nothing I could find quickly on my exact > needs that was clear and I want to be fairly sure before ordering a server. > > Obviously load avg has something to do with it but CPU and mem seems to be > the biggest factors.
Transcoding - It's CPU grunt and multi processors what you need (more so than memory) - handling that many calls ought to be a breeze on any modern hardware without the transcoding. Personally, I think I'd be looking at a TC400B card which can handle 96 concurrent g729 transcodes... But as a rough benchmark, I can do 12 concurrent g729 transcodes on a 1GHz VIA processor before it's totally maxed out, (stupid) extrapolation to 96 would suggest 8 x 1GHz processors, 4 x 2GHz, or 3 x 3GHz processors... However you gain more with the faster processors in terms of bigger cache (but that can also be a loss too) I'd start with a quad core system and see how it goes under benchmark... Gordon _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users