[Asterisk-Users] ISP connection to the PSTN using Asterisk

[Jon Gabrielson]

If you are wanting more than 8-12 lines (fxo or fxs), you need
to go with a t1 card and channel bank.  a single t1 card will 
support up to 24 lines, and a t1 card + channel bank is generally
cheaper than 3 fully loaded TDM cards anyways.



Jon.



On Monday 24 January 2005 09:14 am, Ashling O'Driscoll wrote:
> Hi all,
>
> Could someone let me know the most common way that an Internet ISP
> would allow customers access to the PSTN?? Do they buy multiple fxo
> cards such as the TDM400P and rent multiple lines from a larger
> provider??
>
> Would the best way be to connect to a third party voice/pstn
> gateway?? Is that simply a matter of forwarding all sip traffic
> destined for the pstn to another provider with a gateway and then
> they have to worry about the number of lines etc??And if that is the
> case, I presume no extra hardware is required?
>
> Thanks,
> Aisling.
>
>
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