Re: Asterisk kit needed

["UKHA" <ukha@xxxxxxxxxxxxxxxxxxxxxxx>]

Hi Paul,

forgive the erratic nature of this reply, I'm brain dumping ideas here...

OK> dump brain

ok, It looks to me like you have

3 x FXO lines 2 allocated to your business side and one for home..
2 x FXS lines for either a single 2 line DECT base station or 2 separate
ones.

(I'm not familiar with what BT HomeHighway really gives you (I live in .NL 
- so we dont have it :P) - is that 2 analog and one isdn? or is this
shared? If you need an isdn line connection then I'd suggest the CAPI
devKit... @ 110 euro - see http://ns1.jnetdns.de/jn/relaunch/asterisk/page15.html
_

(Please note that the AVM Fritz PCI only supports EuroISDN!)

I'd need to check that you can run 3 lines at once on it, but a TDM40B with
3 FXO ports could cover this...

There are 2 ways I see that you can do this:

1. 2 x Asterisk Developer Kit PCI + and extra FXO module (you may have to
let them think you are getting one for a friend too ;) )

Total cost around 475 USD

2. 1 x Asterisk Developer Kit PCI + and 2 extra FXO modules (you may be
able to swap the FXS module for an FXO one - but you'd have to ask) + 2
IAXy's (only 2 if you can swap the FXS for an FXO) or 1 if not

total cost around :

For 3 fxo + tdm card + 2 Iaxy = 195+170 = 365 USD

For 1 fxs + 1 fxo ( tdm card ) + 2 fxo + 1 Iaxy = +195+170 + 85 = 450 USD


3. Look at voicetronix cards, they are also supported under asterisk. The
do an Open Switch 6 card that has 6 ports which can be made to be either
FXS or FXO in various combinations. The cards go for about 895 USD but it's
an all in one card, you haven't got multiple cards to worry about.  Be
aware that it's a big card tho... (they have some free perl code that acts
as a pbx - open source too.. if you're really feeling geeky.. obviously not
the scale of * .. but it sounds kinda fun :) )

for the callerid stuff it depends on how you want to do it, if you want ACE
to keep that bit you could use xpl/xap to pass this info to a daemon on the
* box for caller id...

For the audio feed from the house you'll need a soundcard that works under
linux .. soundblasters seem to be ok, but someone here may have a better
suggestion on that..

>Oh, and I'll probably go the cheap fanless ITX PC route -
>I did have a look at the Asterisk web site but couldn't see any min
specs.
>If I want to do everything, what min hardware spec should I be
>looking at?

You need to bear in mind the number of interrupts generated are high on the
cards... I don;t know (considering the number of ports you want) if one of
the fanless ITX boxes (are we talking VIA book pc types?) would keep up..
plus if you need an ISDN card and 2 TDM cards it's a definate no no.

CPU0
9:   18988848          XT-PIC  wcfxo
11:   18985081          XT-PIC  wctdm

[root@ASTERISK iaxyprov]# uptime
6:22pm  up  5:18,  1 user,  load average: 0.00, 0.00, 0.00


CPU requirements are, primarily, based on what codecs you intend to use. If
you use ulaw or alaw then you're talking (literally :P) about 80kb/s per
channel, including IP overhead. ulaw and alaw conversions are done as a
simple table lookup so require almost no CPU. GSM, ILBC, g729 etc.. all
require the CPU to do the hard work, but reduce the bandwidth required.
Since we are talking LAN traffic (you didn;t mention voip, so I wont) and
I'm assuming your pretty competant with your LAN, then (hopefully) we're
talking 100mb switched so ulaw/alaw would be fine - If you have gigabit kit
then there's no question about it - ulaw/alaw (alaw is wot us europeans use
however the conversion between the two is 'nothing'). It's worth noting
that IAXy's require ulaw (ADPCM is in the works)... I currently use an
800mhz cellery box for my * server ... (anyone fancy donating a dual Xeon
with 2 gb ram? :P)

I have heard that there is a new version of the FXO port in development
that should (within a couple of weeks) support UK caller ID ... which may
help later on...

IIRC Li had some issues when BT turned up on his doorstep to investigate a
short in (apparently) caused by the FXO card he was using.. I don;t know if
the module version has the same issue. If you are routing through other
equipment you'd have no issues.

If I can think of anything else I'm blurt it out later...

-- end of braindump ---

OK> quit

Andy




On 26/05/2004 at 15:54 Paul Gale wrote:

>Hi Andy,
>
>
>
>If I wanted to implement Asterisk given the following requirements,
what
>would I need in the way of hardware (and any other software):
>
>
>
>*         1 x BT incoming analogue line
>
>*         1 x ISDN Home Highway incoming line (2 analogue, 1 digital
>number) - used for business line
>
>*         I have 2 x meteor units for CLID (currently connected to ACE
to
>announce caller info on my whole house audio system)
>
>*         2 x DECT systems - one home, one business - although I'd like
to
>get a new system that can cope with all incoming lines and display
which
>line is calling (or set different ring tone etc)
>
>*         I want to implement an IVR system (as mentioned before,
linked
>to various HA systems - and the ability to connect to an audio feed
from
>my security system to listen in to the house).
>
>
>
>Many thanks,
>
>
>
>Paul.
>
>
>
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>Yahoo! Groups Links
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