>>> 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)