[asterisk-ss7] Re: Turning up A-Links

[Jorge Churio]

Current asterisk SS7 implementations (both chan_ss7 and libSS7) only
supports fully associated signaling that means signaling links must be in
the same E1/T1 as bearer. No matter what type of link you are dealing with
(usually A or F ones).
The main limitation for this configuration is that you can not have multiple
asterisk boxes attached to a pair of signaling links, your asterisk switch
is the limitated to how many trunks you can install in a single box.
channSS7 has made some great job allowing clusterization but still limits
the possible configuration schemes.
This configuration imposes a constrain specially when you connect with
public switches, usually telcos uses non associated signaling and some sort
of ISUP redundancy.
Hope this helps.

> -----Original Message-----
> From: asterisk-ss7-bounces at lists.digium.com [mailto:asterisk-ss7-
> bounces at lists.digium.com] On Behalf Of asterisk-ss7-
> request at lists.digium.com
> Sent: Lunes, 29 de Enero de 2007 04:00 p.m.
> To: asterisk-ss7 at lists.digium.com
> Subject: asterisk-ss7 Digest, Vol 23, Issue 18
> 
> Send asterisk-ss7 mailing list submissions to
> 	asterisk-ss7 at lists.digium.com
> 
> To subscribe or unsubscribe via the World Wide Web, visit
> 	http://lists.digium.com/mailman/listinfo/asterisk-ss7
> or, via email, send a message with subject or body 'help' to
> 	asterisk-ss7-request at lists.digium.com
> 
> You can reach the person managing the list at
> 	asterisk-ss7-owner at lists.digium.com
> 
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of asterisk-ss7 digest..."
> 
> 
> Today's Topics:
> 
>    1. Turning up A-Links (Joe Mays)
>    2. Re: Turning up A-Links (Matthew Fredrickson)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 29 Jan 2007 12:45:23 -0500
> From: "Joe Mays" <mays at win.net>
> Subject: [asterisk-ss7] Turning up A-Links
> To: <asterisk-ss7 at lists.digium.com>
> Message-ID: <01b201c743cd$41003dc0$9b2118d8 at engineering01>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
> 
> I'm looking for a simple description of the series of steps that are
> necessary in
> asterisk-trunk to get to the point where the A-links are turned up. What
> series of
> steps gets to that point, and how do I look at the status of the A-links
> in Asterisk?
> 
> Joe Mays
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Mon, 29 Jan 2007 12:48:03 -0600
> From: Matthew Fredrickson <creslin at digium.com>
> Subject: Re: [asterisk-ss7] Turning up A-Links
> To: asterisk-ss7 at lists.digium.com
> Message-ID: <e2343b7387481b9dd9e5fc81830a69b5 at digium.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
> 
> 
> On Jan 29, 2007, at 11:45 AM, Joe Mays wrote:
> 
> > I'm looking for a simple description of the series of steps that are
> > necessary in asterisk-trunk to get to the point where the A-links are
> > turned up. What series of steps gets to that point, and how do I look
> > at the status of the A-links in Asterisk?
> 
> Asterisk expects to terminate both signalling and bearer channels.  So
> if you mean by an A-link, a link without local bearer termination, it
> won't help you.
> 
> Matthew Fredrickson
> 
> 
> 
> ------------------------------
> 
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
> 
> asterisk-ss7 mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-ss7
> 
> 
> End of asterisk-ss7 Digest, Vol 23, Issue 18
> ********************************************