[Asterisk-Users] Hardware for PBX with 4 incoming/outgoing lines and 20 phones

[William Suffill]

Andrew,

Sounds like it could be a good fit for your needs. Although that
raises many questions as to how exactly you should deploy it. If you
have a good Internet connection to the office in question you could
perhaps use VOIP termination for your outbound calls instead of the
current 4 PSTN lines. This way if all 20 people on the system could
make calls at once or just 4 and you would only pay per minute on the
usage.

If you have good analog phones already then probably the channel bank
route is the best way to support that many phones. Otherwise you could
get IP Phones such as the Cisco 79xx , Polycom's or Snoms.

Hard to say really what's best without knowing more of how much phone
usage is in question and how much you would like to invest in an
Asterisk/VOIP solution.

Hopefully this along with the other posts you get on the list help you
on your deployment. I'd be curious as to what you finally decide on
after you weight the options.

On Tue, 24 Aug 2004 17:11:36 -0600, Andrew Elchuk
<aelchuk at cronustech.com> wrote:
> Hi
> 
> I am interested in setting up an Asterisk PBX in my office with digium
> hardware, and I just have a few questions in regards to what I would
> need.  It is my understanding that an FXO card is used to interface with
> an incoming/outgoing phone line, and an FXS card is used for interfacing
> with a phone within the system.  Currently we have 4 incoming/outgoing
> phone lines and would like to have 20 phones in the system.  In order to
> accomodate this, would you either reccommend having 1 TDM04B (4 FXO
> modules on it) for the 4 incoming/outgoing lines, and 5 TDM40B (4 FXS
> modules on each) for the 20 phones we would have in the system.  Or
> would you reccommend 1 TDM04B for the 4 incoming/outgoing lines, and a
> T100P connected to a channel bank of some sort to connect to the
> internal phones?  If you reccommend the T100P and channel bank, where do
> you suggest I get an FXS channel bank?  Please let me know if I got any
> of this mixed up (like if I got the FXO and FXS cards mixed up) and
> thank you in advance for your help in us deciding the hardware we need
> for a new PBX.
> 
> Andrew Elchuk
> 
> P.S.  We are currently using an X-Like software phone with a free world
> dialup account for communication with our other office in a different
> city.  My question is if I can configure the extensions.conf to connect
> to a free world dialup number when executing a dial command, or would I
> need to edit sip.conf as well or some other configs or is that even
> possible?  Thank you again.
> 
> --
> Andrew Elchuk
> Technical Associate
> Cronus Technologies
> 248 - 111 Research Drive
> Saskatoon, SK  S7N 2X8
> Tel: (306) 652-5798 ext. 112
> Fax: (306) 652-5799
> Toll Free: 1-877-655-5798
> http://www.cronustech.com
> 
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