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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Roger
Schreiter
Sent: 10 May 2004 13:48
To: [EMAIL PROTECTED]
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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