Steve Edwards wrote:
On Thu, 17 Apr 2014, Jerry Geis wrote:
I was thinking transcoding was through PRI card - not gsm to ulaw. :)
You can convert the GSM files to ULAW using sox. I tend to transcode
everything to WAV (PCM not that funky 'GSM in WAV') because it is
relatively cheap (CPU cycles) to transcode from WAV to ULAW and
everything else in the world understands WAV just fine. If you really
need to squeeze out every last cycle, you can schedule a script to
transcode WAVs to ULAWs as needed.
So if all I am doing is originating calls, and using playback() in the
dialplan - then a system() call on completion I can expect upwards or
3000 concurrent calls?
Based on my unsubstantiated testing on my hosts, that seems like a
reasonable conclusion.
I'll just chime in slightly here. At that number of calls you've got
many factors going on - and they aren't just Asterisk. If playing back
files you've got disk I/O going on which can slow stuff down (unless the
system caches it enough or you throw them into a ramdisk yourself). You
are also sending and receiving a *ton* of small packets. This can make
network equipment and NICs unhappy.
Cheers,
--
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org
--
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