[asterisk-users] Asterisk IVR Scalability

[Al Baker]

DO NOT put all your eggs in one basket i.e. all you calls on ONE BOX

Sriram wrote:
> Hi
>  
> My Scenario is to implement Asterisk in a Call center.. I;ve TE420 
> Digium card and plan to terminate 4 PRIs (E1) on it. I;ve 30 Agents 
> inside..Since its a PRI i m not using any hardware echo cancellation 
> module.The calls would first land on Asterisk and depending on the 
> options would be transferred to the Agent. I've read lot of opinions 
> on voip-info.org giving asterisk hardware dimensions. I would like to 
> take a final call depending on your expert answers :
>  
> Scenario : There would be 120 calls for sure during a 2 hour period of 
> a day , rest of times it would be serving max. 50 calls. No matter how 
> many calls come only 30 would be able to talk to agents rest would be 
> listening to some files on the IVR or be involved in some 
> polling..This is what the client wants as of now but he needs a 
> scalable solution depending on traffic..
>  
> Queries :
>  
> 1. For this initial setup Will a Dual processor (Xeon) with 2 Gigs of 
> RAM with TE420 be able to handle the load ? All my agents would be 
> using the softphones
> 2. What should be the ideal CPU load that i need to watch - may be if 
> the load average crosses 6 or 7 - should i worry ?
> 3. Even though i m adviced against AGI scripts (as they eat precious 
> CPU cycles)- they seem very powerful and i m desperate to use 
> them...Will the above setup get hampered in any way if i use them ?
> 4. Now scalability - If i want to increase the agents to 50 from 30 
> and add another PRI - what are the areas i should focus on - another 
> machine ? or some additional RAM and processor ?
>  
> I;ve been working all along on Dialogic but want to shift to Asterisk 
> as it has lot of features and just fits in my needs (PBX + IVR in 1 
> box! ).
>  
> Please advice
>  
> Thanks in advance
> Sriram
>  
>  
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