[asterisk-ss7] why ss7

[Michael Mueller]

use ss7 controlled trunks to the PSTN when PRI no longer makes sense
for technical, policy, or economic reasons

when using F link SS7 linksets to control IMT, they function very
similar to PRI trunks; when using A link linksets connected to STP,
then you can have a single linkset or combined linkset connection and
grow by connecting IMT to other service providers without having to
install new ss7 links

very often policy will dictate needing to interconnect using ss7 if
you are  to be considered a peer entity in the network; whereas is you
connect via PRI, you are a line-side customer (not a peer) of your
service provider

PRI and SS7 messages and parms map very closely; level 2 and 3
transmission and link control differ between the two

On Thu, Nov 10, 2011 at 11:02 AM, eherr <email.eherr9633 at gmail.com> wrote:
> Hey list,
>
>
>
> I want to learn more about asterisk + ss7.
>
>
>
> However, I am not at the stage of configuration, compiling or building
> asterisk with ss7 yet.
>
>
>
> I am more interested in why to use asterisk with ss7 support and how it is
> used, if you follow the distinction.
>
>
>
> I currently have a multitenant Asterisk 1.4.26 with 2 providers. One is a
> SIP provider with two way trunks. The other gives us PRIs that goes into a
> vanilla box that converts PRI to SIP and then SIP trunks it to our
> multitenant asterisk box.
>
>
>
> Thanks,
>
> --Eric
>
>
>
>
>
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