[Asterisk-Users] Scalable IVR

[Thomas Gallaway]

Digvijay Singh wrote:

>Hi,
>I am presently thinking of making just a demo application because i need to
>assemble it real quick....hooking up an analog phone line for an input
>channel...with a dial out feature as well..
>I think I would need an XP100 wildcard as FXO .not sure of what to use for
>FXS... Incidentally steven informed me that anything with a PCI bus even may
>be a P133 could do it...I am presently in india and trying hard to find a
>vendor... getting the stuff shipped might take upto 2 weeks ...with usual
>custom delays ..
>Suggestions are heartily appreciated ..
>thanks
>digvijay
>----- Original Message ----- 
>From: "Scott Stingel" <scott at evtmedia.com>
>To: <asterisk-users at lists.digium.com>
>Sent: Friday, May 14, 2004 11:28 PM
>Subject: RE: [Asterisk-Users] Scalable IVR
>
>
>  
>
>>Hi Digvijay-
>>
>>I have done something similar to what you're looking to do, so maybe I can
>>help you.  I currently have a system that takes up to 600 simultaneous IVR
>>calls, supplied by a large private DMS-100 PBX over 20 E1 spans.  I think
>>    
>>
>my
>  
>
>>load is a little higher than yours however, because the calls typically
>>    
>>
>are
>  
>
>>very short (5 seconds).
>>
>>Here's a summary of what I've found - please contact me directly for more
>>detail:
>>
>>I suggest:
>>* Use 1 processor (example: 2.8Ghz P4) for every 4 E1's (example:  one
>>TE405P card) when you have that much call setup traffic.
>>
>>* Try to do as much as possible using the dialplan (extensions.conf). AGI
>>scripts are very powerful but cost you in performance when you're running
>>large numbers of lines.
>>
>>* For the processor to use, see the Wiki for suggestions.  I've used P4
>>    
>>
>and
>  
>
>>Xeon based Tyan and Intel motherboards with success.
>>
>>* Where you get the hardware depends of course on where you are located.
>>
>>Good luck!
>>Scott Stingel
>>
>>
>>
>>Scott M. Stingel
>>Emerging Voice Technology Inc.
>>Palo Alto, California and London, England
>>
>>Email:          scott at evtmedia.com
>>URL:            www.evtmedia.com
>>
>>
>>-----Original Message-----
>>From: asterisk-users-admin at lists.digium.com
>>[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of digvijay singh
>>Sent: Friday, May 14, 2004 10:37 AM
>>To: Asterisk-Users at lists.digium.com
>>Subject: [Asterisk-Users] Scalable IVR
>>
>>Hi,
>>I am an asterisk newbie and looking around for information . I wish
>>    
>>
>someone
>  
>
>>could take their valuable time off to answer my query in detail.
>>I wish to set up an IVR system that can allow user authentication and
>>therefter accept 2-3 inputs from users ..generate a key and transmit the
>>same in voice back to the user .
>>The system will intially have small load but if  the whole package in
>>    
>>
>future
>  
>
>>may have huge loads .. from 1000 to 10000 simultaneous peak time callers
>>with 1 minute duration calls ( just to mention how scalable we would
>>    
>>
>ideally
>  
>
>>desire it to be )
>>At present we would need a maximum of 10 simultaneous users peak load
>>capability.
>>>From what i know so far asterisk is the most cost effective and sound
>>option.
>>Now to my question..
>>1-) What would be the hardware requirements in these different cases
>>a-) for a single analog phone line for demo purposes intially to
>>b-) a peak time 10 simultaneous calls facility and later
>>c-) going upto 10,000 simultaneous calls scalability
>>2-) Where can i procure the hardware from
>>I was thinking of taking  30 access channels of 64 Kbps and 1 signalling
>>channel of 64 Kbps (30B + D). for an ISDN compatible EPABX
>>Kindly let me know of your opinion
>>Thanks
>>digvijay
>>    
>>

Now if you need to get an demo application going and need it going quick 
why dont you just install
asterisk on some box (maybe a P2-300+ suggestable cause compiling will 
take ages on a P1-133) and
use all software until you get the hardware. Use a software phone (see 
voip-info.org) so you can get
your demo coded. Then once you got the rest of the hardware you can hang 
it onto the PSTN. This
will get you going for now. I guess you could just use some sort of SIP 
provider to give you an dial
in phone line too.

-- Thomas