[Asterisk-Users] Who would use Asterisk SS7?

[Mike M]

On Friday 23 May 2003 12:56, Hemant Kumar wrote:
> I think with IAX2 and TDMoE it is not worth the effort to think about SS7.

SS7 is used to setup calls between switches in the PSTN - the so-called 
trunk-side connection to a switch.  PRI is a line-side connection to the PSTN.

TDMoE is for scaling * to multilpe boxes.  IAX2 - similar?  May be good for 
distributing multiple *box across a wide geographic area? I did a quick read 
on these protocols, but one thing is certain - they will not get you 
connected to the PSTN.  If you do not want to connect to the PSTN then SS7 
should not be on your radar.

>
> Hemant
>
> P.S: This was told to me by a carrier who is already covering a-z
> countries.
>
> ----- Original Message -----
> From: "Mike M" <linux-support at earthlink.net>
> To: <Asterisk-Users at lists.digium.com>
> Sent: Friday, May 23, 2003 10:03 PM
> Subject: [Asterisk-Users] Who would use Asterisk SS7?
>
> > Hello.  I am new to this forum.  If this issue has been discussed
> > already, please inform me, but my STFW have indicated that it has not.
> >
> > If SS7 were available on * would it make commercial sense to use it?
>
> There
>
> > are case studies on the web (courtesy of the Death Star :->) for ISPs
> > with 10,000+ subscriber lines showing clear cost savings in transitioning
> > from
>
> PRI
>
> > to SS7 controlled IMT.  My question is focused on * and its users.  More
> > detail might help.  The discussion below assumes a North American PSTN
> > and
>
> US
>
> > currency.
> >
> > If a * user connects to the PSTN with a PRI it will cost $900/month (in
>
> 1998
>
> > according to [1]).  An equivalent connection with SS7/IMT is $3000/month
> > ($2500 for two SS7 A-links and one or two route sets and $500 for the
>
> IMT).
>
> > The SS7/IMT method becomes a better deal when more than 72 VGC (3 x
>
> T1-24ch)
>
> > are needed.  Are there any * users that use or forsee using 72+ VGC to
> > the PSTN?
> >
> > I know in at least one or two markets the monthly cost of 2 A-links is
>
> closer
>
> > to $1800/month.  I cannot verify any of the other costs in the model
>
> above,
>
> > but they seem about right.
> >
> > Can anyone provide a similar PRI versus SS7/IMT cost model for any other
> > parts of the world?
> >
> > [1] http://www.tmcnet.com/articles/ctimag/0998/featureBay.htm
> >
> > TIA,
> > --
> > Mike M.
> > _______________________________________________
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>
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-- 
Mike M.