[asterisk-ss7] SS7 MAP Support for Asterisk

[Paul Bagyenda]

Essentially what you need is the ability to send the signalling  
traffic over IP, right?

  A while back I posted our initial attempts at getting this in place: http://www.mail-archive.com/asterisk-ss7@lists.digium.com/msg02760.html

Essentially the first thing that's needed is M3UA. Attached is a diff  
and two files to get this to work with libss7. Beyond that you need  
SCCP (for most MAP that's class 0 and 1, which is easy to add). Not  
done work on that (yet). Then MAP, decoding/encoding of which is not  
difficult with the write asn.1 lib/tools.

All the same, here is the m3ua code, perhaps it can serve as a start.



On Oct 27, 2009, at 14:47, Marco Cordeiro wrote:

> Hello All,
>
> I know that this subject has been discussed many times here, but  
> since I haven't been following the list lately, I'll bring it up  
> again.
>
> Do you have any updates on MAP support for libss7 ?
>
> I'll explain my problem, any maybe you could give me suggestions.
>
> I'm trying to integrate two MSCs (Mobile Switch) that currently are  
> connected thru a dedicated link (Voice + Signalling) that costs a  
> lot per month, once the two locations are very far from each other  
> (about 3000 Km). The idea is to integrate them thru the internet.
>
> The voice channels must be ISUP, and related to that the current  
> version of libss7 is perfect, some tests have being made and it  
> works perfectly, running an Asterisk in each location, locally  
> connected to the MSC with and ISUP link, and the traffic being  
> exchanged thru and IAX trunk between the 2 servers.
>
> Now the idea is to also migrate SS7 MAP signalling between this two  
> locations. Currently location "A" holds the HLR for the whole  
> signalling network, and location "B" has to check HLR's database for  
> mobile's profile. I was thinking about doing the same setup used for  
> voice channels, but now used for SS7 MAP signalling.
>
> I now that there are many solutions in the market for that, such as  
> CISCO ITP Routers (SS7 over IP), SS7 tunneling devices, but I would  
> like to try a cost effective solution using asterisk if possible.
>
> Rgs,
>
> Marco Cordeiro
> mhcordeiro at gmail.com
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