Re: asterisk, Looking for a step by step guide...

["UKHA" <ukha@xxxxxxxxxxxxxxxxxxxxxxx>]

On 11/11/2004 at 17:57 Nigel Giddings wrote:

>Hi,
>
>A month or so ago I dabbled with Asterisk (VoIP PBX) without much / any
>success.
>
>I am afraid my Linux experience is very limited which seems to be a
>sticking point. I tried to use Red Hat and while I could download most
of
>the files needed I was obviously missing something...
>
>I have a dedicated PC which I was going to give over to the job (would
it
>be possible to run Zone Minder on the same machine ?)... I think the
>proccessor is 633Mhz, but this is really a proof of concept at this
>stage...
>
>Also interested to hear from those who use it whether they have it
inside
>thier LAN, behind a firewall. I am using ISA at the moment.
>
>Some idea of other peoples setup and a place for install instructions
>would be appreciated.
>
>Thanks in advance
>
>Nigel
>

http://www.automated.it/guidetoasterisk.htm
or, as Jim pointed out, you
could download the LiveCD (link to it also on above page).

I have my asterisk box(en) behind a firewall, although it is a SIP aware
one.

My personal preference is to use SIP on the LAN but IAX2 wherever possible
when connecting to other parties on the internet. (IAX2 connectivity is one
of my
primary requirements for 3rd party connections)

I don;t really know what zoneminder is, so can't comment on that. The cpu
usage is directly related to the codec you decide to use. ulaw/alaw is
uncompressed
and will take little cpu but lots of bandwidth. g729 will take lots of cpu
and little bandwidth
(there are obviously other codecs too) - my * development box spec is

model name      : Celeron (Coppermine)
stepping        : 6
cpu MHz         : 598.075
cache size      : 128 KB

total:    used:    free:  shared: buffers:  cached:
Mem:  393424896 385323008  8101888        0 133480448 60362752
Swap: 797810688  1175552 796635136

and it handles most things I throw at it with no trouble (ulaw/alaw)
although I have 3
ciscos using g729, but there;s not more than one in use at any one time

(I've just tested 2 of them logging into voicemail and get

CPU states:  5.0% user, 13.3% system,  0.0% nice, 81.6% idle

)

this box is also running db lookups on >8 million records for caller id
info on incoming
calls.. hardly seems to twitch (although that could be my excellent coding
:P )


anyhow, for a test I think that box you have should be fine...

HTH

Andy