> On Fri, 2 Oct 2009, Matt King wrote:
>
> > I've got a requirement to build a 16-port E1 ISDN Asterisk machine (so
> > that's a whopping 480 simultaneous calls). I'm thinking of using 4x
> > TE405P or 4x TE410P to provide the 16 E1 ports required.
> >
> > There is no VoIP requirement at this customer.
> >
> > Does anyone out there have any experience you can share with building
> > and running a system like this?
>
>
> I had a similar requirement about 5 years ago for a 24x7x365 adult chat
> site, except it was for T1s instead of E1s. Back then, the interrupt
> activity from the 4 cards was strongly advised against. I don't think that
> is an issue any more.
>
> When we thought about it, 4 1u pizza boxes with 1 quad card each made more
> sense. The dialplan on these "telco servers" just answered the call and
> dialed the "application server."
>
> If a telco server crashed, we only lost 25% of our capacity. Likewise
> (because we were running at less than 75% of capacity), we could do a
> "rolling upgrade" of the telco servers without any downtime. When we
> wanted to upgrade the application server, we changed the telco server
> dialplan to dial the backup application server.
>
> You may want to take a look at external E1/T1 devices like red-fone.com.
We have also built a 16 x T1 server, except we used two Sangoma
octal(8) port cards.
It is doable, but to reiterate what Steve already said, you would be
better off breaking it out into separate servers.
MATT---
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