asterisk users - Sep 2004 - Placing Asterisk between existing PBX and PSTN

Hi,

I've read through the Asterisk handbook and I'd just like clarification
from someone that's implemented the above before.  Lets imagine I want to
use the CallingCard application and don't want to tell a client to buy a
channelbank (the analog extensions are too many to connect to FXS cards),
I figure I could set them up as below:


Original Existing Setup
-----------------------

 PSTN  +-------+
------||       ||------A1
------|| PBX   ||------A1
------||       ||------A1
------||       ||------A1
       +-------+

	A1,A2,A3,A4 are analog extensions


Setup With Asterisk
-------------------

 PSTN           +----------+          +-------+
------|        ||          ||        ||       ||------A1
------|FXO Card|| Asterisk ||FXS Card||  PBX  ||------A2
------|        ||          ||        ||       ||------A3
------|        ||          ||        ||       ||------A4
                +----------+          +-------+

So they only pay for the Asterisk box, the FXO Card (TDM04B) and FXS Card
(TDM40B).

I'd appreciate any "yes/no/been there" answers.  I just want to
make sure
about this, in case there's anyone that's done this before.

Thanks in advance.


Gerald.

Gerald,

I am doing this with a quadBRI card and a Karel PABX at home - works very
well.... I would like to suggest that you don't try this with analogue lines
(fxo) and extensions (fxs) - you will not be able to monitor call progress and
lose all (possible) DDI information.

Hope that helps.

Regards
Jens

PS: I am toying with the idea of doing this with a quad Digium PRI interface at
the office. But I am not sure when I will get to this.

Hi All,

Just wondering if anyone could have by chance taken a look at the scenario
below... I checked up http://www.asteriskpbx.com/index.php?menu=support
and it looks like Asterisk-Users is the correct list to post this (I
think...).

I'd really appreciate any insight.

Gerald.

On Mon, 6 Sep 2004, Begumisa Gerald M wrote:

    > Hi,
    >
    > I've read through the Asterisk handbook and I'd just like
clarification
    > from someone that's implemented the above before.  Lets imagine I
want to
    > use the CallingCard application and don't want to tell a client to
buy a
    > channelbank (the analog extensions are too many to connect to FXS
cards),
    > I figure I could set them up as below:
    >
    >
    > Original Existing Setup
    > -----------------------
    >
    >  PSTN  +-------+
    > ------||       ||------A1
    > ------|| PBX   ||------A1
    > ------||       ||------A1
    > ------||       ||------A1
    >        +-------+
    >
    > 	A1,A2,A3,A4 are analog extensions
    >
    >
    > Setup With Asterisk
    > -------------------
    >
    >  PSTN           +----------+          +-------+
    > ------|        ||          ||        ||       ||------A1
    > ------|FXO Card|| Asterisk ||FXS Card||  PBX  ||------A2
    > ------|        ||          ||        ||       ||------A3
    > ------|        ||          ||        ||       ||------A4
    >                 +----------+          +-------+
    >
    > So they only pay for the Asterisk box, the FXO Card (TDM04B) and FXS
Card
    > (TDM40B).
    >
    > I'd appreciate any "yes/no/been there" answers.  I just
want to make sure
    > about this, in case there's anyone that's done this before.
    >
    > Thanks in advance.
    >
    >
    > Gerald.
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