[Asterisk-Users] Re: RE: Organization wide

[Tim Jackson]

Well, 1GB is what it has now, I can up it to 4GB but I think that's over
kill ;). The coolest part about this machine is 3 PCI busses. 2 64bit
and 1 32bit. I'm assuming that this would make IP through the machine
quite a bit more robust. Since these machines can be had for $500-600
refurbed it is what I was looking at using for the PBX machines. 3x
power supplies in them, no RAID as of now, but it's a matter of putting
in a card (hot-swap drives already)

I'm assuming the best way for failover is to have identical dialplans on
the machines (using IAX trunks?). What about synchronizing SIP
extensions between machines? Use MySQL? Like you mentioned about primary
and secondary sip proxies on phones, what's the best way to notify the
phone that the proxy has changed? Use DNS with some sort of scripting?

-Tim

-----Original Message-----
From: Jason Kawakami [mailto:jkkawakami at optellabs.com] 
Sent: Friday, September 10, 2004 8:06 PM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] Re: RE: Organization wide


----- Original Message ----- 


> My current asterisk box is a Quad Xeon 450 (2mb cache) IBM Netfinity
> 7000. About how many SIP extensions (normal usage) would this machine
> handle?

think about concurrent connections not how many extensions.  there are
no
hard and fast rules but i would think that the box you have described
could
support +- 70 concurrent connections.  up the RAM to the max the box can
handle and you could squeeze out a few more maybe 10-15.
>
> What about redundancy? How would I implement an auto-failover Asterisk
> box at a remote location, or could I?

you should think about having an * server at each distinct location and
using IAX trunks to tie everything together.  i wouldnt think about
doing
this from one box.  also, i am not sure about whether you can have a
primary
and secondary SIP proxy with any openly available phones out there.


> snip>
> The only thing that stands out that might not work so well is the 29
> pots lines in a single location.  Ideally you could install a PRI in
> this location, but if not you'll need some other less common hardware
> to handle all those lines.

i agree with matt here.  probably have so many pots because the system
in
place didnt support t-1/pri.  just a guess but a t-1/pri is most likely
less
expensive from a MRC perspective.
>
> On the IP side, the calls don't actually use up that much bandwidth,
> probably 30kbits/sec/call if you use ILBC.  The only thing you need to
> do is make sure that all the RTP packets are delivered with a higher
> priority.  Either custom queuing or bandwidth reservation or both will
> make everyone's life better.

echo here

Jason Kawakami

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