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

[Anders Baekgaard]

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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