This all depends on your EPBX...  For example

1)  If you put a 2 port FXO card in an Asterisk server, you need 2 FXS ports on 
your EPBX to connect to
2)  If you put a 4 port FXO card in an Asterisk server, you need 4 FXS ports on 
your EPBX to connect to
3)  If you put a T1/E1 card in an Asterisk server, you need a matching T1/E1 
port on your EPBX to connect to

Don't hesitate to email me directly if you still have questions...

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Siju George
Sent: Wednesday, January 27, 2010 11:05 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Connecting to an External EPBX without an SIP 
provider

Thanks for the reply jamie :-)

Does ordinary EPBXs in US have those ports or do you need special EPBXs?

--Siju

On Wed, Jan 27, 2010 at 8:32 PM, Jamie A. Stapleton
<[email protected]> wrote:
> In this case, a SIP provider would not be required.
>
> Obviously, you will need ports on your EPBX to connect the Digium card to.
>
> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of Siju George
> Sent: Wednesday, January 27, 2010 5:01 AM
> To: [email protected]
> Subject: [asterisk-users] Connecting to an External EPBX without an SIP 
> provider
>
> Hi,
>
> If I get a Dignum Card and fit it into my computer do I still need an
> SIP provider to connect through my EPBX to a Public Telephone System?
>
> Thanks
>
> --Siju
>
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