[asterisk-users] Question about SS7

[Mik Cheez]

You can think of it like cable TV.  You aren't required (at the moment) 
to have cable to receive television signals, but if you want extra 
features you have to go with cable (or something like it).

With a PSTN line, you can make calls, send caller-id, etc. but SS7 
allows you to receive large amounts of data, allows you to grow your 
network over 100 T1's, etc.

Asterisk doesn't natively do SS7 signalling, but I know there are ways 
of doing it using third party drivers and soforth.  Most importantly, 
you need a way to connect to a SS7 network (e.g. connection at a 
collocation).

This is an overly simplistic explanation, but there's lots more 
information out there on the benefits.

Mik

mark morreny wrote:
> Hi,
>  
> I have read about SS7 recently and learnt that it is a signalling 
> protocol used in PSTN for call management, setup, etc.  The thing that I 
> don't understand is how SS7 plays a role in VOIP.  When I make calls 
> between landline and Asterisk via PSTN, I don't need to do anything with 
> SS7.  Is it because the SS7 signalling is already done by Asterisk 
> already?  From the prespective of implementing Asterisk, what kind of 
> SS7 support is needed?  Is SS7 something needs to be concerned about 
> when using Asterisk with T1/E1?
>  
> I hope someone can help me to clearify these doubts that I am having.
>  
> Thanks,
> Mark
> 
> 
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