[asterisk-ss7] ss7 newbie

Christopher (JVM) christopher at jvminfo.com
Thu Aug 14 10:43:47 CDT 2008

As a newbie myself I was wondering if someone could tell me the difference 
between the pointcode the adjacent point code and the defaultdpc. I am 
trying to obtain these infos from my carrier but he is only giving a single 
point code.

On Wed, 13 Aug 2008 10:49:26 -0500, Matthew Fredrickson wrote
> Sriram wrote:
> > Hi
> > Thnks for the reply...So say if i want 120 channels over ss7 
> > signalling...will the telco give me 4 E1s and 1 separate E1 for ss7 
> > signalling or will the ss7 be in one of the 4 E1s itself..?
> Sometimes.  It depends on what you negotiate with the telco you're 
> interconnecting with.  Some of them like to waste an E1 on a single 
> signalling link though.  And even stupider ones waste a single E1 on 
> two signalling links.  It seems ridiculous to mandate redundant 
> signalling links and have them running over the same E1 (Don't ask,
>  I had somebody come to me having to deal with that).
> But in any case, you can negotiate with them how you would like to 
> set it up typically.
> > Do i have to just plug in those 4 E1s directly into the TE420P and 
> > install libss7 ? thats it ?
> Yes :-)  And configure it.
> > Also please tell me what are the advantages of ss7 over PRI in terms of 
> > 1.call handling capacity 2. connectivity 3. reliability ..
> If you need answers to that question, you probably need to research 
> more into what SS7 is.
> Typically, you have a more reliable link since you can have 
> redundant signalling channels.  The protocol also supports a lot 
> more bearers per signalling link than you can do in PRI (or even 
> Matthew Fredrickson
> Digium, Inc.
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Christopher Srinivasa
VoIP Researcher and Developer / Chercheur et Developpeur VoIP
christopher at jvminfo.com
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