[asterisk-biz] SIP to PSTN Hardware

[Steve Totaro]

This is where the data guys come into telephony and think they know 
best.  You will learn...

Thanks,
Steve

Jai Rangi wrote:
> When we talk about VoIP (I mean pure VoIP) there is no need for Digium 
> cards. All the major and minor players support SIP.
> I have never worked with any card. So cant say much about them.
>
> -Jai
> www.bingotelecom.com
>
>
>
> From: Arya <arya6000 at gmail.com <mailto:arya6000 at gmail.com>>
> Subject: Re: [asterisk-biz] SIP to PSTN Hardware
> To: "Commercial and Business-Oriented Asterisk Discussion"
>        < asterisk-biz at lists.digium.com 
> <mailto:asterisk-biz at lists.digium.com>>
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> <mailto:83c19ee40708051312l2c8a7ab8h91da033a5dd6e56d at mail.gmail.com>>
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>
> Thank you for that great explanation Jal
>
> So I would have to use Digital PSTN lines for large installations right? I
> have to see if Digital is available in the area. If I would have to use 2
> Asterisk boxes would I need 2 digital PSTN lines?
>
> On 8/5/07, Jai Rangi <jprangi at bingoconsulting.com 
> <mailto:jprangi at bingoconsulting.com>> wrote:
> >
> >  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 <http://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?
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