See replies in text below:
At 07:09 AM 8/31/2008, 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
This is fine. Even more powerful that what I have used with 240 call
legs (call in and extensions out)
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 ?
Not to worry unless you do a lot of media / codec transcoding. Keep
everything the same at all times.
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 ?
I have used them to answer IVR with up very complex scripting and
interaction. Very little overhead noticed even with 50+ running at
the same time.
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 did the opposite. I put 60 astrisk units together in a farm to
handle IVR front end
to 6,000 simultaneous calls. With multiple CPUs, I gained 24*7 dependability
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! ).
Good move! ! ! !
Please advice
Thanks in advance
Sriram
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