On Mon, Aug 27, 2012 at 06:10:23PM +0530, Raj Mathur (राज माथुर) wrote: > On Monday 27 Aug 2012, DHAVAL INDRODIYA wrote: > > i would like to know if anyone has done or having idea regarding PRI > > terminations in asterisk. > > > > i have a requirement where i need to support 80 PRI in one machine i > > have found a machine which have 10 PCI slots available > > > > now i am thinking of arranging 8port sangoma card in this pci slots > > so i can arrenge 10 card in that. > > Last I checked, the highest channel number DAHDI supported was 1023, > limiting you to some 34 E1 PRIs.
Since DAHDI-Linux 2.5.0 there is not a hard coded limit on the number of channels [1] or spans [2] that DAHDI can support. The number of pseudo channels is limited by a module parameter, 'max_pseudo_channels', which currently defaults to 512 [3]. [1] http://svnview.digium.com/svn/dahdi?view=revision&revision=9609 [2] http://svnview.digium.com/svn/dahdi?view=revision&revision=9598 [3] http://svnview.digium.com/svn/dahdi?view=revision&revision=9610 > > is it possible to run system like that ? is it good idea , can > > asterisk handle 2400 calls if machine size and RAM is good. > > We've faced stability issues with more than 500 simultaneous calls on a > single high-powered server, with no transcoding. However, that's > probably more a limitation of our own architecture and application than > a hard Asterisk limit. I too would be very surprised if DHAVAL is able to run anything close to 80 spans in a single server without modifying the drivers to a) optimize for increased throughput versus minimal latency (DAHDI currently favors low latency between bridged channels) and b) Rework how conferencing / bridging is done in the drivers so that only channels in conference with one another are checked for audio mixing. I believe the limiting factor would be CPU cycles and not memory. As an aside, the most I've run in a single server are 24 T1s. But I was not optimizing for density either. Cheers, Shaun -- Shaun Ruffell Digium, Inc. | Linux Kernel Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA Check us out at: www.digium.com & www.asterisk.org -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
