[asterisk-biz] SIP to PSTN Hardware

[Jai Rangi]

Arya,

This can be done very well with asterisk and ser/openser. Ser is very good in handling/distributing the load to asterisk servers. 
The whole system can be scalable. SEE developers claims that it can handle of thousand's  of call at the same time. I have never tested 1000 calls. But I believe that. 
We have build the system with ser+asterisk+mysql. All the calls come on ser and then ser can forward the calls to asterisk servers in round robin fashion. That can also be done based on load or based on number of calls. The complete system is scalable. Rule of thumb is 100 simultaneous calls per asterisk. So if you need 200 simultaneous channels then 2 asterisk server if need 500 channels then 5 asterisk boxes. Since every thing is coming from database its easy to add more asterisk or ser servers. Distributing load on ser will involve the companies who are sending traffic to you. 

Depending on the technical background, building this type of system can take 6-8 weeks to *forever* (I am not joking). Been there and done that. I am sure there are great experts is the lists. They can add their experience too. 
Contact me off the list if you are planning to outsource the project. If you decide to do it your self then post your technical questions to ser mailing lists and asterisk-users mailing lists. People in the lists are always willing to help. 

-Jai 
www.bingotelecom.com



On Aug 4, 2007, at 9:18 PM, Alex Balashov wrote:


> > On Sat, 4 Aug 2007, Arya wrote:
> >
>   
>> >> ok thank you for the great explanation, so what would be good for  
>> >> large
>> >> installations?
>>     
> >
>   

There's some study case about Houston university using Asterisk,
and some success histories about using both, Asterisk (for the services)
and openser for the sip registrations,



> >    The question then is how large.   :) 
> >
> > --
> > Alex Balashov
> > Evariste Systems
> > Web    : http://www.evaristesys.com/
> > Tel    : +1-678-954-0670
> > Direct : +1-678-954-0671
> >
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