[TriLUG] Re: voip

[Jon Carnes]

A 1Ghz with 512Mb and a SCSI disk subsystem is the minimum Asterisk
server that I would run.  That should work fine for handling both phone
lines as trunks and then connecting them to VoIP phones via SIP. 

If you noticed during the demo I gave, there was some skipping on the
voicemail prompts - it wasn't too bad, but if I had been using a SCSI
disk subsystem instead of IDE, there wouldn't have been any skips.

Voice applications are very sensitive to any I/O blocking so you need to
keep plenty of cpu in reserve and make sure that the system doesn't wait
too long for data from the disk drives.

Jon Carnes 

On Thu, 2004-02-19 at 10:21, H Brett Bolen wrote:
> I have two phones lines + broadband coming into my house, and would
> like to use asterisk for voice mail, maybe some other features.
> 
> How much cpu/memory do I need to run just two lines with voicemail?
> 
> I'm looking at the digum hardware.  I also have an old dialogic
> card collecting dust in the attic.  I think it is the d21
> (non d) version.
> 
> b²
> 
> Jon Carnes wrote:
> 
> 
> > 
> > Don't be afraid to download, install, and play with Asterisk.  It's
> > quite powerful.  Note though that Asterisk needs lots of CPU in order to
> > function as a decent phone switch.  A 1Ghz box with lots of RAM and a
> > SCSI HD could probably handle 5 phones, whereas a 2GHz box could
> > probably handle 20 phones... It scales well, but does need CPU in order
> > to function nicely under load.
> > 
> > The highest load, seems to be from VoiceMail/AutoAttendent activities;
> > servicing these seems to need very fast CPU and a SCSI disk subsystem.
> > The actual phone connections don't require very much processing power in
> > order to sustain the connections.
> > 
> > Let me know if you have any other questions!
> > 
> > Jon Carnes
> > 
>