[Asterisk-Users] Signalling C7 / SS7

[Bruce Komito]

We are interested, too, but from a practical standpoint.  We have IMT
trunks from the LECs, and it would be great to be able to terminate them
with Asterisk.  That can't happen without SS7 support, so instead we can
only terminate PRIs, which, of course, requires a switch that supports
SS7.

Bruce Komito
High Sierra Networks, Inc.
www.servers-r-us.com
(775) 284-5800 ext 115


On Mon, 10 May 2004, Tom Scott wrote:

> Storer, Darren wrote:
>
> >Hi Roger,
> >
> >
> >
> >>What hardware do you use to connect your asterisk
> >>box to a PSTN carrier via C7/SS7 (instead of ISDN PRI)?
> >>
> >>
> >
> >There is currently no native SS7 support within Asterisk. If your need is
> >urgent you could source a protocol converter (PRI/C7) from a 3rd party like
> >Telesoft (Okeford 4000 etc.) but the costs are prohibitive compared to a
> >very cost effective Asterisk platform.
> >
> >There is an OpenSS7 project (See: http://www.openss7.org/asterix.html ) that
> >is looking at such a stack for Asterisk but it appears to have stalled. Have
> >a look in the mailing list archive for more info.
> >
> >Out of interest, why do you need SS7 on your Asterisk build? (Which features
> >etc. are you looking to support?)
> >
>
> I can';t speak for anyone else, but my interest in SS7 is academic.
> I'd like to include a chapter or two on the "softswitch" movement,
> where traditional CO/EO switches are replaced by an MGC/MG
> and related components like an application server, media server
> and signaling converter/gateway). It would be valuable for students
> in an Intro to VoIP course to have even just minimal hands-on
> experience with SS7 messages, the three types of nodes (SSP, STP,
> SCP), the systems they connect to (traditional CO/EO switches,
> softswitches and databases), and basic operation of the protocols,
> especially TCAP, SCCP, and ISUP. If you're interested, see our
> course notes at:
>
> http://vedatel.com/Isdn/voip_ss7_softswitch.html#mozTocId41743
>
> -- TT
>
> >Regards
> >
> >Darren
> >--
> >Telco>Internet<Broadcast
> >
> >-----Original Message-----
> >From: asterisk-users-admin at lists.digium.com
> >[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of Roger
> >Schreiter
> >Sent: 10 May 2004 13:48
> >To: asterisk-users at lists.digium.com
> >Subject: [Asterisk-Users] Signalling C7 / SS7
> >
> >
> >Hi,
> >
> >has anybody out there experience with those
> >server grade connections?
> >
> >What hardware do you use to connect your asterisk
> >box to a PSTN carrier via C7/SS7 (instead of ISDN PRI)?
> >
> >
> >Thanks for any hints!
> >Roger Schreiter.
> >
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> >
>
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