Hardware needed for 60 simult. SIP calls

pourrien

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#1
Hi Friends,
I want to know the minimum required and the better hardware I need for 60 concurrent/simultaneous. SIP calls.
Thanks a lot for your help
Pourrien
 

pourrien

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#2
20 viewer and nobody leave a messgae ?? ;)
 

ramoncio

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#3
Don't worry about the hardware, any new machine can do 60 calls even with transcoding.
You should worry about your bandwidth. You'll need a good and fast connection.
 

Chilling_Silence

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#4
Transcoding becomes a little bit of a worry if you have 60 calls you're wanting to change the codec of, however if you go for any stock-standard Core2Duo 2Ghz+ then you'll have cpu power to burn.
2GB Ram wouldnt go amiss
But most importantly as ramoncio said, bandwidth coming out your ears would help greatly. Use a provider who supports iLBC or g729, and if possible IAX2 Trunking (Saves lots of bandwidth).
 

pourrien

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#5
Thanks a lot for your reply.
I think there are no problem for the bandwidth because my server is hosted in a datacenter with a 100MB connction.
But maybe it's necessary to change my CPU, because I have a AMD Athlon 64 2GHz with 2GB of RAM.
Thanks again for your help
Pourrien
 

gbrook

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#6
That processor should still be OK anyway

Cheers
Garry
 

pourrien

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#7
gbrook said:
That processor should still be OK anyway

Cheers
Garry
Ok thanks for your help
Regards
Pourrien
 

Chilling_Silence

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#8
It'll definitely be OK if you're not transcoding
Otherwise, chuck elastix on the box, ssh in and then run:
asterisk -r
Then, type in:
core show translation recalc 10

Look at the two codecs it'll be transcoding between, and remember there are 1000ms in 1 second, so mine looks like this:
http://pastie.org/441503
Which means it takes approx 36ms to go from g711 to iLBC
If I had ALL my calls doing that, I could host 1000ms / 36ms = 27 concurrent calls. Bear in mind that assumes nobody else is using Music on Hold, or that anything else is happening to the system, so realistically I could do a "safe" 20 calls, a "probable" 25 calls, and a system max (probably unstable) of 27 on this CPU.

RAM requirements are minimal so dont worry about that either :)

Hope this helps


Chill.
 

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