On Wed, Jun 17, 2009 at 3:18 PM, John Todd <jt...@digium.com> wrote: > > On Jun 17, 2009, at 8:16 AM, 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. > > > > -- > > Thanks, > > Steve Totaro > > +18887771888 (Toll Free) > > +12409381212 (Cell) > > +12024369784 (Skype) > > > [Digium hat off, ITSP (previous employer) hat on.] > > Not speaking for Digium on this one, but speaking from personal > experience at another company. > > We could get 100 G.729 channels in a 2x3ghz P4 machine with plenty of > CPU room to spare, 4+ years ago, and that rule of thumb served us > well. This was for SIP (G.711<->G.729) but I can't imagine that DAHDI > or Asterisk takes significantly more or less horsepower for this task > now for the base transcoding load. > > JT > > --- > John Todd > email:jt...@digium.com<email%3ajt...@digium.com> > Digium, Inc. | Asterisk Open Source Community Director > 445 Jan Davis Drive NW - Huntsville AL 35806 - USA > direct: +1-256-428-6083 http://www.digium.com/ > > > > John,
Thanks for the info. Can't go wrong with these in a cluster if you are correct. http://www.surpluscomputers.com/348663/hp-dl140-proliant-dual-xeon.html I used to have a garden of seven (too small to be a farm) of Asterisk boxen that were simple PRI to SIP gateways doing ulaw (no transcoding as far as codec), and nothing else running, just a few lines in each conf file. They would run at ~65% CPU utilization with 95 channels in use on each box. This was the Asterisk, Zaptel, Libpri 1.2.X flavor. I wonder if anyone else has input on the CPU utilization of of a simple PSTN <-> VoIP gateway based on Asterisk? -- Thanks, Steve Totaro +18887771888 (Toll Free) +12409381212 (Cell) +12024369784 (Skype)
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