[Asterisk-biz] E1 with SS7 signaling

[Francisco A. Lozano]

(Please correct me if I'm wrong)

SS7 is a complex stack involving many layers (MTP 1-3, SCCP,TCAP, ISUP).
I think you're talking about SSP and SCP.In SS7, one or more channels in 
one or more E1s transport the signaling between a SSP(Service Switching 
Point) and a SCP (Service Control Point). With only one channel between 
an SCP and a SSP, an SCP can signal a huge amount of calls to the SSP.

What people usually talks about when talking about SS7 is ISUP, which is 
somewhat like "EuroISDN". Then, when people here talks about "sending 
calls over SS7", they really mean "sending calls over ISUP".

Brian West escribió:

> It is my understanding that you DO NOT send calls over SS7 you only  
> signal with it.. and a few channels on an E1 can signal many calls a  
> second.
>
> /b
> ---
> Anakin: “You’re either with me, or you’re my enemy.”
> Obi-Wan: “Only a Sith could be an absolutist.”
>
> On Jun 12, 2005, at 3:51 AM, Francisco A. Lozano wrote:
>
>> Maybe with 24 E1s you can afford a small SSP ... SS7 licenses for  
>> asterisk are quite expensive!
>>
>> Michael Welter escribió:
>>
>>
>>> The Honduras telephone company, Hondutel, will supply E1 circuits  
>>> with SS7 signaling only (no PRI, no R2, nothing but SS7).  The SS7  
>>> is on a separate circuit (I assume V.35).
>>>
>>> We would like to interface Hondutel with one or more Asterisk  
>>> systems--we want Asterisk to be the bridge between Hondutel and  
>>> VoIP services.  Initially we'll have one E1 for a proof of concept  
>>> trial.  If successful the project will immediately grow to ~24 E1  
>>> circuits.
>>>
>>> The problem is finding an inexpensive interface with the E1/SS7  
>>> circuit that will interoperate with Hondutel.
>>>
>>> Does anyone have any suggestions?
>>>
>>> Thanks,
>>>
>>> _______________________________________________
>>> Asterisk-Biz mailing list
>>> Asterisk-Biz at lists.digium.com
>>> http://lists.digium.com/mailman/listinfo/asterisk-biz
>>>
>>>
>>
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>
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