[asterisk-ss7] Using libss7 to connect to an GMSC or STP

[mosbah abdelkader]

Hi Sverker,


Thank you for your help.


Please see inline.


Well, I’ve been working mostly with SMS and USSD and not so much with the
location parts. To get the location information you could use MAP signaling
depending on what you want to do, the call would  be
MAP-PROVIDE-SUBSCRIBER-Info .

Ok. Clear.


Could also be that your carrier provide some other interface for location
based services. I guess you want to be able to detect if a phone is active
in the network or not before setting up call to it?


Yes, one of the reasons is to detect if the subscriber is active or not. I
need also to have it's location for other purposes.


To work with MAP you need SCCP, TCAP and MAP protocol layers on top of
libss7, I don’t know of any open source implementation of them.


Ok. One open source implementation is OpenSS7.org. But, it is very buggy,
lacks documentation, supported with very expensive costs, ...etc.


I’ve used Dialogic’s products for that kind of things but it’s not easy to
work with.


Ok. I have also worked with Dialogic SS7 stack. We have integrated custom
SCTP and M3UA layers in the Dialogic Stack for a french customer. So, I can
work with it.


Thank you again.

--
BR

Abdelkader Mosbah.

On Tue, Feb 8, 2011 at 3:37 PM, Sverker Abrahamsson <sverker at abrahamsson.com
> wrote:

> Well, I’ve been working mostly with SMS and USSD and not so much with the
> location parts. To get the location information you could use MAP signaling
> depending on what you want to do, the call would  be
> MAP-PROVIDE-SUBSCRIBER-Info . Could also be that your carrier provide some
> other interface for location based services. I guess you want to be able to
> detect if a phone is active in the network or not before setting up call to
> it?
>
>
>
> To work with MAP you need SCCP, TCAP and MAP protocol layers on top of
> libss7, I don’t know of any open source implementation of them. I’ve used
> Dialogic’s products for that kind of things but it’s not easy to work with.
>
>
>
> /Sverker
>
>
>
> *From:* mosbah abdelkader [mailto:mosbah.abdelkader at gmail.com]
> *Sent:* den 8 februari 2011 2:24
> *To:* sverker at abrahamsson.com
> *Cc:* asterisk-ss7 at lists.digium.com
> *Subject:* Re: Using libss7 to connect to an GMSC or STP
>
>
>
> Hi,
>
>
> > I suppose you would use just normal ISUP to do the call via GMSC.
>
> *Ok. *
>
> > To act as a VMSC is a completely different thing and would not be possible to
> accomplish on an asterisk without extensive development in which case you
>
> would also need MAP handling.
>
>
> *Ok. MAP will be used to get for example the status/location of the mobile subscriber. I understand that this part is not implemented in Asterisk.*
>
>
>
> *Have you experienced such a case. If yes, please share your experience?
>
> *
>
> *
>
> And what about the case of an STP in the place of a GMSC?
>
>
> Thank you.*
>
>
> --
> BR
>
> Abdelkader Mosbah.
>
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