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<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It would run on any OS that is supported by dahdi, but is it available
to anything but Linux? I haven’t put it up on the web yet, need to clean up the
code and create a config file.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>/Sverker<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> asterisk-ss7-bounces@lists.digium.com
[mailto:asterisk-ss7-bounces@lists.digium.com] <b>On Behalf Of </b>Jan Berger<br>
<b>Sent:</b> den 15 juli 2010 4:32<br>
<b>To:</b> asterisk-ss7@lists.digium.com<br>
<b>Subject:</b> Re: [asterisk-ss7] SIGTRAN GW based on libss7<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>I assume this run's on Linux only ?<br>
<br>
<br>
Is your project on the web somewhere?<br>
<br>
<br>
<br>
Jan<br>
<br>
> Date: Thu, 15 Jul 2010 15:57:55 +0200<br>
> From: sverker@abrahamsson.com<br>
> To: asterisk-ss7@lists.digium.com<br>
> Subject: Re: [asterisk-ss7] SIGTRAN GW based on libss7<br>
> <br>
> No, there is no licence conflict as the binaries are not linked together.<br>
> The dialogic stack sit on the other side of the SCTP socket and<br>
> communicate with the signaling gateway over SIGTAN. It's only the<br>
> signaling gateway code itself that has to be released as GPL as it's<br>
> linked to libss7.<br>
> /Sverker<br>
> <br>
> ><br>
> > Isn't that a license conflict? I assume Dialogic is commercial?<br>
> ><br>
> ><br>
> > Jan<br>
> ><br>
> ><br>
> ><br>
> ><br>
> > From: sverker@abrahamsson.com<br>
> > To: asterisk-ss7@lists.digium.com<br>
> > Date: Thu, 15 Jul 2010 15:28:43 +0200<br>
> > Subject: Re: [asterisk-ss7] SIGTRAN GW based on libss7<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > Yes, I’m only using the libss7 up to mtp3 level. The plan is to<br>
> > support M2UA as well, and maybe M2PA if the need come up.<br>
> ><br>
> ><br>
> ><br>
> > I currently use Dialogic for SCCP/TCAP/MAP layers but the nice<br>
> > part about this architecture is that it can be combined with more or
less<br>
> > any<br>
> > stack and any card supported by dahdi.<br>
> ><br>
> > /Sverker<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > From: asterisk-ss7-bounces@lists.digium.com<br>
> > [mailto:asterisk-ss7-bounces@lists.digium.com] On Behalf Of Jan
Berger<br>
> ><br>
> > Sent: den 15 juli 2010 2:47<br>
> ><br>
> > To: asterisk-ss7@lists.digium.com<br>
> ><br>
> > Subject: Re: [asterisk-ss7] SIGTRAN GW based on libss7<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > I have never seen the value of ISUP over<br>
> > SIGTRAN. CAMEL, INAP, MAP makes more sense, but in that case you
should<br>
> > only<br>
> > use mtp3 and avoid the rest of Asterisk for the IN-apps.<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > That is unless you plan an integrated SRP solution.<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > For Asterisk I would consider M2UA because that allows an Asterisk to<br>
> > benefit<br>
> > from the redundancy and failover in M2UA + you could stack a SS7 that<br>
> > run's<br>
> > over several boxes - thought the value is a bit limited.<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > What do you use for SCCP, TCAP and CAMEL/MAP?<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > Jan<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > From: sverker@abrahamsson.com<br>
> ><br>
> > To: asterisk-ss7@lists.digium.com<br>
> ><br>
> > Date: Thu, 15 Jul 2010 10:17:16 +0200<br>
> ><br>
> > Subject: Re: [asterisk-ss7] SIGTRAN GW based on libss7<br>
> ><br>
> ><br>
> ><br>
> > Hi Jan,<br>
> ><br>
> > You are right of course, ISUP needs more than just the signaling<br>
> > to be relevant. My focus is on SCCP as it’s MAP and INAP that is most<br>
> > interesting for me.<br>
> ><br>
> ><br>
> ><br>
> > Yes, I use the LGPL M3UA stack.<br>
> ><br>
> > /Sverker<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > From: asterisk-ss7-bounces@lists.digium.com<br>
> > [mailto:asterisk-ss7-bounces@lists.digium.com] On Behalf Of Jan
Berger<br>
> ><br>
> > Sent: den 14 juli 2010 3:15<br>
> ><br>
> > To: asterisk-ss7@lists.digium.com<br>
> ><br>
> > Subject: Re: [asterisk-ss7] SIGTRAN GW based on libss7<br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> ><br>
> > hi Sverker,<br>
> ><br>
> ><br>
> ><br>
> > Most interesting article.<br>
> ><br>
> ><br>
> ><br>
> > SCCP over M3UA is straight forward, but how would you do ISUP?<br>
> ><br>
> ><br>
> ><br>
> > What I mean is that ISUP contains reference to CIC's and basically is
an<br>
> > instruction to connect a voice channel - but what will you use to
actually<br>
> > connect to the voice channel ? Asterisk acting as an AS can be on a<br>
> > different box<br>
> > than the SG, meaning that if you run a proper SG you will need to
connect<br>
> > the<br>
> > voice out from that box as well.<br>
> ><br>
> ><br>
> ><br>
> > Are you using the LGPL M3UA stack?<br>
> ><br>
> ><br>
> ><br>
> > Jan<br>
> ><br>
> ><br>
> ><br>
> >> From: sverker@abrahamsson.com<br>
> ><br>
> >> To: asterisk-ss7@lists.digium.com<br>
> ><br>
> >> Date: Tue, 13 Jul 2010 20:31:22 +0200<br>
> ><br>
> >> Subject: [asterisk-ss7] SIGTRAN GW based on libss7<br>
> ><br>
> >><br>
> ><br>
> >> Hello everybody,<br>
> ><br>
> >> Since a while back I've been working on a SIGTRAN signaling
gateway<br>
> >> which<br>
> ><br>
> >> use libss7 for MTP2 and MTP3 layers and currently support M3UA on
the IP<br>
> ><br>
> >> side, it needs some more work as still many things are hardcoded
for the<br>
> ><br>
> >> specific application but it is being used in production
currently. I'm<br>
> > using<br>
> ><br>
> >> E1 card from Sangoma with wanpipe 3.5.11.4 and dahdi 2.3.0.<br>
> ><br>
> >><br>
> ><br>
> >> To do that I've modified libss7 1.0.2 to allow SCCP packages to
be<br>
> >> passed<br>
> ><br>
> >> from libss7 to the gateway app, as I'm currently using only that<br>
> >> protocol.<br>
> ><br>
> >> I'm now looking into cleaning up the code and making it general
purpose,<br>
> > and<br>
> ><br>
> >> I'm also facing an issue. Some questions and remarks:<br>
> ><br>
> >><br>
> ><br>
> >> * libss7 contains implementations for MTP2, MTP3 and ISUP. I'd be<br>
> > interested<br>
> ><br>
> >> to support ISUP over the SIGTRAN as well. One way to solve that
is that<br>
> > the<br>
> ><br>
> >> lib has a call where the application can register which protocols
it's<br>
> ><br>
> >> interested of, i.e. ISUP in that case will be passed on to gw<br>
> >> application<br>
> ><br>
> >> instead of handled by internal implementation<br>
> ><br>
> >><br>
> ><br>
> >> * in file NEWS-05-30-2008 it is mentioned that part of MTP2
processing<br>
> >> has<br>
> ><br>
> >> been moved to kernel space with a new channel driver in zaptel.
Does<br>
> >> that<br>
> ><br>
> >> work with dahdi as well and is there any configuration needed to
enable<br>
> > it?<br>
> ><br>
> >> I saw an issue on sending mtp2 packets, they were queued in user
space<br>
> >> but<br>
> ><br>
> >> the poll in ss7linktest (that I based my app on) never got
enabled for<br>
> ><br>
> >> write. I did a quick fix in mtp3_transmit that after calling
mtp2_msu<br>
> >> then<br>
> ><br>
> >> ss7_write is called.<br>
> ><br>
> >><br>
> ><br>
> >> * as I understand the trunk is not the most up to date but there
are<br>
> ><br>
> >> development in other branches. Should I port my changes to trunk
or to<br>
> > some<br>
> ><br>
> >> other branch?<br>
> ><br>
> >><br>
> ><br>
> >> * In trunk there has been some api changes so that ss7linktest
doesn't<br>
> ><br>
> >> compile. I did changes to make it compile but I might have
misunderstood<br>
> ><br>
> >> something as it didn't work to run it, the link didn't come up.
Is there<br>
> > any<br>
> ><br>
> >> API docs or working example code to use with trunk (or
recommended<br>
> > branch)?<br>
> ><br>
> >> How about merging the branches and make a 2.0 release?<br>
> ><br>
> >><br>
> ><br>
> >> * I'm currently facing an issue with memory corruption, I get the<br>
> > following<br>
> ><br>
> >> from valgrind:<br>
> ><br>
> >><br>
> ><br>
> >> ==3591== 4999998 errors in context 2 of 8:<br>
> ><br>
> >> ==3591== Thread 3:<br>
> ><br>
> >> ==3591== Invalid free() / delete / delete[]<br>
> ><br>
> >> ==3591== at 0x400551D: free (vg_replace_malloc.c:325)<br>
> ><br>
> >> ==3591== by 0xC53E2F: mtp2_receive (mtp2.c:403)<br>
> ><br>
> >> ==3591== by 0xC5460B: ss7_read (ss7.c:365)<br>
> ><br>
> >> ==3591== by 0x80493B6: ss7_run (sgw.c:114)<br>
> ><br>
> >> ==3591== by 0xC83831: start_thread (in /lib/libpthread-2.5.so)<br>
> ><br>
> >> ==3591== by 0xBC3E0D: clone (in /lib/libc-2.5.so)<br>
> ><br>
> >> ==3591== Address 0x40c9958 is 0 bytes inside a block of size 520
free'd<br>
> ><br>
> >> ==3591== at 0x400551D: free (vg_replace_malloc.c:325)<br>
> ><br>
> >> ==3591== by 0xC53E2F: mtp2_receive (mtp2.c:403)<br>
> ><br>
> >> ==3591== by 0xC5460B: ss7_read (ss7.c:365)<br>
> ><br>
> >> ==3591== by 0x80493B6: ss7_run (sgw.c:114)<br>
> ><br>
> >> ==3591== by 0xC83831: start_thread (in /lib/libpthread-2.5.so)<br>
> ><br>
> >> ==3591== by 0xBC3E0D: clone (in /lib/libc-2.5.so)<br>
> ><br>
> >> ==3591==<br>
> ><br>
> >> ==3591==<br>
> ><br>
> >> ==3591== 4999998 errors in context 3 of 8:<br>
> ><br>
> >> ==3591== Invalid read of size 4<br>
> ><br>
> >> ==3591== at 0xC53E22: mtp2_receive (mtp2.c:402)<br>
> ><br>
> >> ==3591== by 0xC5460B: ss7_read (ss7.c:365)<br>
> ><br>
> >> ==3591== by 0x80493B6: ss7_run (sgw.c:114)<br>
> ><br>
> >> ==3591== by 0xC83831: start_thread (in /lib/libpthread-2.5.so)<br>
> ><br>
> >> ==3591== by 0xBC3E0D: clone (in /lib/libc-2.5.so)<br>
> ><br>
> >> ==3591== Address 0x40c9b5c is 516 bytes inside a block of size
520<br>
> >> free'd<br>
> ><br>
> >> ==3591== at 0x400551D: free (vg_replace_malloc.c:325)<br>
> ><br>
> >> ==3591== by 0xC53E2F: mtp2_receive (mtp2.c:403)<br>
> ><br>
> >> ==3591== by 0xC5460B: ss7_read (ss7.c:365)<br>
> ><br>
> >> ==3591== by 0x80493B6: ss7_run (sgw.c:114)<br>
> ><br>
> >> ==3591== by 0xC83831: start_thread (in /lib/libpthread-2.5.so)<br>
> ><br>
> >> ==3591== by 0xBC3E0D: clone (in /lib/libc-2.5.so)<br>
> ><br>
> >><br>
> ><br>
> >> Is this something that has already been addressed in trunk/dev
branch?<br>
> >> It<br>
> ><br>
> >> had worked fine for a couple of weeks and then suddenly started
to<br>
> >> happen<br>
> ><br>
> >> quite frequently under load.<br>
> ><br>
> >><br>
> ><br>
> >> * The plan for the signaling gateway is to support M3UA, M2UA and
M2PA<br>
> >> as<br>
> ><br>
> >> well as the Dialogic gct api. Naturally it will have to be
released<br>
> >> under<br>
> ><br>
> >> GPL since libss7 is.<br>
> ><br>
> >><br>
> ><br>
> >> Best regards<br>
> ><br>
> >> Sverker<br>
> ><br>
> >><br>
> ><br>
> >><br>
> ><br>
> >> --<br>
> ><br>
> >>
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> ><br>
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