[Asterisk-Users] DS3 PCI in asterisk

[Jonathan Feally]

Kevin P. Fleming wrote:

> Race Vanderdecken wrote:
>
>>     Why can't I convert the DS3 input to SIP Output, no transcoding,
>> straight G.711, all in one box?
>
>
> Yes, that is what you would want to do. Probably even better would be 
> DS-3 to IAX, and try to get trunking support for G.711 working to keep 
> down the IP overhead as well.
>
>>     Yes I know the bandwidth from a DS3 to SIP calls means I need 2
>> DS3's worth of space back out the door.
>
>
> Not a big deal; use a server with dual PCI-X busses, put the DS-3 card 
> on one and a GigE card on the other. You're still only pushing 
> 120-150Mbps over the bus combined, which is not a problem at all.
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I was just about to say follow the IAXy model (Just a wee bit more 
channels!) and make the box speak IAX instead of SIP/H.323. I also 
suggest setting up this standalone DS3->IAX box to have each channel 
assigned to a specifiy asterisk box. While an asterisk box may be able 
to run 600+  channels at a time, other limitations come into play, such 
as hard drive access for VM and other applications that run on the 
machine either seperate from asterisk or as a module/AGI of asterisk in 
which CPU and other resources can cause lag times, reducing the number 
of channels that can be processed jitter free.

My 2 Cents
-Jon