[asterisk-ss7] Two Asterisk boxes, only ONE signal link

[Anders Baekgaard]

Hi Daniel

Yes, a "fake" signalling channel is a work aound. The patch below is also a 
work around..

--- cluster.c~  2006-04-19 09:54:08.000000000 +0200
+++ cluster.c   2007-03-23 09:51:25.000000000 +0100
@@ -847,9 +847,8 @@
     }
   }

-  if (this_host->has_signalling_receivers)
-    if (setup_receiver_socket())
-      goto fail;
+  if (setup_receiver_socket())
+    goto fail;
   connect_receivers();
   receivepipe[0] = receivepipe[1] = -1;
   receivebuf = lffifo_alloc(200000);

Best regards
Anders Baekgaard

On Thursday 22 March 2007 17:19, Daniel Bichara wrote:
>  Hi Anders,
>
>  Can we work around? Like setting up a "fake" signalling channel?
>
>  []'s
>
>  Daniel
>
>  Anders Baekgaard escreveu:
> Hi seb
>
> You're right, there is a bug in chan_ss7. In your setup, Asterisk_1 must
> believe that Asterisk_2 has a signalling channel, othewise it will not
> allow cluster connections.
>
> The problem where a SIP phone registration is on one asterisk box, while a
> call is initiated to the SIP phone from another asterisk box can be solved
> by sharing a database between the asterisk boxes that keep the SIP
> registration information. This must be setup in the extconfig.conf
> configuration file where you specify the database engine, the database
> name, and the table name (e.g. sipusers, sippeers) containing the SIP
> registration data. In addition, you also need to setup the DBMS.
>
> Best regards
> Anders Baekgaard
>
> On Wednesday 21 March 2007 21:47, seb wrote:
>
>
> Hi Anders,
>
> sadly it didn't work... I've used the configuration sugested with both
> Asterisk_1 and Asterisk_2 sharing the same OPC. Asterisk_2 (the one without
> signaling channel) is not able to connect to Asterisk_1 (that one with
> signaling channel), in fact Asterisk_1 fails to bring up the cluster. The
> workaround was to change the ss7.conf on Asterisk_1 (only on Asterisk_1)
> saying that Asterisk_2 has a signaling channel (even if it is not true) and
>
> adding one line to the [cluster] section:
>
>
> [cluster]
> ; Listen on TCP port 5040
> port => 5040
> ; Signalling traffic for link l2 is monitored by host Asterisk_1 on
> interface
> if-1
> l2 => Asterisk_1#if-1
>
>
> l1 => Asterisk_2·if-1 ; <<<<-------------  I added it !!!
>
> only in this way I've got the cluster work... the problem is that it
> doesn't work properly ! : the IP phones registered in TELCO can make calls
> only to the IP phones registered to the same Asterisk where the last call
> was coming from... so if for example you make a call from Asterisk_1 to
> TELCO then TELCO wont be able to call Asterisk_2 even if it will be able to
> call Asterisk_1....
>
> Any ideas ?
>
> cheers,
>
> On 3/15/07, Anders Baekgaard <ab at sifira.dk> wrote:
>
>
> Hello Seba
>
> It will work with one point code shared between two hosts and one
> signalling
> link connected to one host, provided the hosts are interconnected through
> a
> LAN.
>
> Best regards
> Anders Baekgaard
>
> On Monday 12 March 2007 16:16, seb wrote:
>
>
> Hi Anders,
>
> just wondering if it will not create some problems with the OPC... in
>
>
> fact,
>
>
>
> in this specific case, we have only one PC provided by the CNC and
> therefore the Telco will use the same DPC for every E1 trunk (the Telco
> assumes that we are connecting all the E1 trunks to the same
> machine)... the problem is that chan_ss7 accepts only one OPC.... Do
> you think that
>
>
> it
>
>
>
> is necessary to patch the code so that it accepts more than one OPC?
>
> Thanks again
>
> Seba
>
> On 3/12/07, Anders Baekgaard <ab at sifira.dk> wrote:
>
>
> Hello
>
> It is possible to have Asterisk_1 forward SS7 signalling for
>
>
> Asterisk_2.
>
>
>
> Chan_ss7 has a cluster feature where multiple hosts supervises each
> other. The chan_ss7 source comes with an example configuration in the
> file ss7.conf.template.two-hosts.. For your setup, if l2 is connected
>
>
> to
>
>
>
> Asterisk_2, and host Asterisk_2 has the network interface if-1, the
> cluster
> section should be something like
>
> [cluster]
> ; Listen on TCP port 5040
> port => 5040
> ; Signalling traffic for link l2 is monitored by host Asterisk_1 on
> interface
> if-1
> l2 => Asterisk_1#if-1
>
> Best regards
> Anders Baekgaard
>
> On Saturday 10 March 2007 11:56, Tusar wrote:
>
>
> Hi,
>
> Same feature I am also looking for ....
>
> Astreisk_1 --> SS7 Signalining --> Telco
>                    /
> Astreisk_2--/  --> Bearer Channel --> Telco
>
>
> Regards,
>
> ..Tusar..
>
> On 3/9/07, seba seba <seezov at gmail.com> wrote:
>
>
> Hi Nico,
>
> Did u find the answer to the second question?
>
>
> That is:
>
> My Telco gives me N E1 trunks and only one signaling channel (in
>
>
> the
>
>
>
> first E1 trunks). I'd like to connect each E1 trunk to different
>
>
> Asterisk
>
>
>
> boxes. Therefore I have N-1 Asterisk boxes that do not get any
>
>
> signaling.
>
>
>
> Is it possible to implement such configuration with the current
>
>
> chan_ss7
>
>
>
> or it is necessary to modify the chan_ss7?
>
>
> Thanks in advance,
>
> Seb
>
>
>
> On Wed, 22 Nov 2006, [EMAIL PROTECTED] wrote:
>
>
> Hello,
>
> I have some feature-questions.
>
> 1.)
> I have one Asterisk Box with SS7 and 4 E1 Ports.
> i have one Telco with 4 Routings, a a high quality routing, a
>
>
> quality
>
>
>
> Routing a cheap routing and a cheaper routing.
> The telco did not give me 4 SS7 Signalling Links.
> Is it Possible to get this running with chan_ss7 or libss7?
>
>
>
> 2.)
> I have 2 Asterisk boxes and one SS7-Signalling Link, is it
> possible
>
>
> to
>
>
>
> make the signalling for the second box with the Signalling
> link
>
>
> on
>
>
>
> the
>
>
>
> first Box?
>
>
>
> Thanks a lot for your help
>
>
> Nico
>
>
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