[asterisk-ss7] ss7 newbie

[Matthew Fredrickson]

Christopher (JVM) wrote:
> If I am only terminating traffic to my carrier and he is not sending me 
> any, do I still need a pointcode for myself or can I set things up with 
> the his pointcode and the default point code as traffic is only going in 
> his direction ?

Anytime you are connected to the SS7 network, you must have a point code 
for yourself.  It is how you are addressed.  Think of it as an IP address.

It does not make a lot of sense for you not to have a pointcode, and you 
certainly can't do anything with the traffic (regardless if it is just 
going in one direction) without one.

Matthew Fredrickson

> 
> *On Thu, 14 Aug 2008 18:17:12 +0200, olivier taylor wrote*
>  > Your provider should give you 3 informations.
>  >
>  > His pointcode (adjacent pointcode in your config)
>  > Your pointcode (pointcode in your config)
>  > and eventually a default pointcode if they are other hops between you 
> and him (usually you will use the adjacent pointcode).
>  >
>  > Maybe, we can say that it works like IPs (your Ip, his Ip, and 
> eventually a proxy).
>  >
>  > Noob answer, that's how I understand things :)
>  >
>  > Olivier
>  >
>  > Christopher (JVM) a écrit  :
> 
>> 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 
>>>
>>> NFAS 
>>> PRI).
>>>
>>> Matthew 
>>> Fredrickson
>>> Digium, 
>>> Inc.
>>>
>>> _______________________________________________
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>> --
>> Christopher 
>> Srinivasa
>> VoIP Researcher and Developer / Chercheur et Developpeur 
>> VoIP
>> christopher at jvminfo.com
>> JVM INFORMATIQUE CANADA 
>> INC.
>> 9655-E rue 
>> Ignace
>> Brossard, Quebec, Canada J4Y 
>> 2P3
>> Tel: 514-951-2981 
>> x2034
>> Alt. Tel: 450-444-1884 
>> x2034
>> Fax: 
>> 450-444-1884
>>
>>
>> _______________________________________________
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>>
>> asterisk-ss7 mailing 
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>>   
> 
> 
> 
> -- 
> Christopher Srinivasa
> VoIP Researcher and Developer / Chercheur et Developpeur VoIP
> christopher at jvminfo.com
> JVM INFORMATIQUE CANADA INC.
> 9655-E rue Ignace
> Brossard, Quebec, Canada J4Y 2P3
> Tel: 514-951-2981 x2034
> Alt. Tel: 450-444-1884 x2034
> Fax: 450-444-1884
> 
> 
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