[Asterisk-ss7] My Take on the SS7

Richard Gintz dgintz at airlinksystems.com
Fri Aug 26 11:45:18 CDT 2005

Can someone give me an example of the cost/feature differences between SS& and
PRI ISDN?  I just got a PRI line in from XO Communications (Texas).  And how
much differently would Asterisk configurations be using SS7 vs. PRI?


> > To me the reason I'd really like SS7 over PRI ISDN is that I would 
> > really like to get the CPC data on incoming calls which PRI 
> > ISDN cannot 
> > do and thats it in total. 
> I am not sure what _I_ would do with the CPC information in my case.  It may
> be good to know where the call came from so that I can setup more cost
> effective route in the future but Caller ID (number) seems good enough to
> start. So simply converting the SS7 message to a PRI should be good enough.
> If I can pass the caller ID information down to the Voip Subscribers that
> would be the only reason I need it.
> What do _you_ use the CPC information for?
> > I think not many people need SS7 - maybe its not big/available in the 
> > US?  Also normal businesses will get by fine with PRI ISDN 
> > (they don't  want/need the CPC switch data).
> It is the primary way to interconnect to the ILEC (at least Qwest in the
> Northwest).  The cost of lines controlled by SS7 is only a fraction of PRIs
> from Qwest or other providers.
> > Markku Korpi's driver is not cheap for sure
> Yes but it is certainly less money than most hardware solutions I have seen
> out there. (Markku hasn't gotten back to me yet from my first email to him
> so I am not even sure whether I will be able to get it if I want it)
> > Best of luck!  When you are finished I you might want lots of 
> > money for 
> > your non-opensource SS7 software too! :)
> I am not a greedy person but of course I wouldn't mind lots of money (That
> is why I am in business).  Asterisk has helped us a ton and at very little
> cost.  We might be able to give back depending on what it will end up
> costing.  There is always a consulting / support income possibility even if
> it is open sourced.  (I don't want to talk like it is done before I even
> start though)
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