[Asterisk-Users] SS7 and Asterisk solution

[Matthew Boehm]

ahh..american arrogance. I assumed you were in the US.
We pay $2000 a month for DS3/SS7 to national carrier. We will soon be
dropping the SS7 and turning that voice DS3 into a bandwidth DS3. We will
still use the carrier but all calls will terminate to them VoIP. It will
save us over $2000 a month.

-Matthew
----- Original Message ----- 
From: "Ben Merrills" <ben at griffin.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Wednesday, January 12, 2005 11:30 AM
Subject: RE: [Asterisk-Users] SS7 and Asterisk solution


We have the problem that our telecoms provider deals mainly in SS7 (C7,
and it seems most in the UK do). For us to take EuroISDN off them, with
the same features as SS7, we have to be put through a protocol
converter, now this isn't an issue for us, but it is for them.

Most UK phone companies (i.e. BT or the smaller regional carriers) all
use SS7, everywhere! For the most part they don't accept VoIP
termination (although I think BT might have some facilities for this).
So they very much try and push SS7 on interconnects.

And that's why SS7, for me (and I think for quite a few others taking
PRI style links in the UK) is so important.

Ben


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Matthew
Boehm
Sent: 12 January 2005 17:02
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] SS7 and Asterisk solution

We terminate local calls over PRI. Everything else goes out VoIP via SIP
to
national carriers and they terminate it.
Can't you use a channel bank or an FX card to connect to PSTN? Or PRI..

-Matthew

----- Original Message ----- 
From: "Steve Underwood" <steveu at coppice.org>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Wednesday, January 12, 2005 8:09 AM
Subject: Re: [Asterisk-Users] SS7 and Asterisk solution


> Matthew Boehm wrote:
>
> >Isn't the goal to move away from SS7? SS7 is pretty old technology.
That
is
> >what we are doing. We are dropping 2 SS7 carriers and will now send
traffic
> >to them directly as SIP.
> >
> >
> So how do I connect to a PSTN line by SIP? :-)
>
> SS7 is the basis for the entire world's telephone network signalling.
> New forms which run over IP are being deployed. Even if the last
> remaining fragments of the PSTN are shut down, and everything on land
> lines is IP based, SS7 is still the core protocol for the cellular
> networks - GSM-A, for example, is built upon SS7. Of course, its
always
> possible WiMAX might shut those down too. :-)
>
> Regards,
> Steve
>
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