[asterisk-ss7] Asterisk, Taqua T7000, and you guessed it, SS7

[Nahuel Greco]

Here you have a patch attached to set the link SLC using an "slc"
directive in chan_dahdi.conf. Try it and tell me if works.

Saludos,
Nahuel Greco.



On Fri, Apr 30, 2010 at 7:01 PM, Bryan Scott <sirbryan at gmail.com> wrote:
>>>>  Set your SS7 trunk to SLC 1. I couldn't make it work
>>>> on SLC 0. No idea why.
>>>>
>>>
>>> The Taqua is 1 too?  Regardless of Asterisk's setting, it shows the SLC 0.  Setting the Taqua to 1 causes the F-Link to go down and Asterisk complains.
>>>
>> Yes. Both the taqua and the asterisk are set to SLC=1
>>
>
> It looks like Asterisk pays no attention to the "slc" setting in chan_dahdi.conf, but instead libss7 (in ss7.c) automagically calculates the Signaling Link Code based on how many are linksets have been defined:
>
>
> /* ****************** */
> // looks like we create a new mtp2 link and autoincrement the SLC counter
>
>                m = mtp2_new(fd, ss7->switchtype);
>
>                if (!m)
>                        return -1;
>
>                m->slc = ss7->numlinks;
>                ss7->numlinks += 1;
>                m->master = ss7;
>                if (zapmtp2)
>                        m->flags |= MTP2_FLAG_ZAPMTP2;
>
>                ss7->links[ss7->numlinks - 1] = m;
>
> /* ****************** */
>
> So changed it to add one (m->slc = ss7->numlinks + 1) and I'm getting MTP2 link issues:
>
> [Apr 30 16:01:04] WARNING[19051]: chan_dahdi.c:11509 ss7_linkset: MTP2 link down (SLC 1)
> MTP2 link up (SLC 1)
> [Apr 30 16:01:06] WARNING[19051]: chan_dahdi.c:11509 ss7_linkset: MTP2 link down (SLC 1)
> MTP2 link up (SLC 1)
> [Apr 30 16:01:09] WARNING[19051]: chan_dahdi.c:11509 ss7_linkset: MTP2 link down (SLC 1)
>
>
>
>
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