[asterisk-dev] LibPRI: How to add an IE to an outgoing call?

[Guilherme Loch Waltrick Góes]

Hi Alexandre,
I have a ISDN PRI linked to a telco (GVT) here in Brazil and will be glad to
help you test this scenario.


Guilherme Loch Góes

Notícias e Fórum sobre VoIP com software livre:
http://www.voipexperts.com.br


On Sat, Apr 18, 2009 at 11:12 AM, Alexandre Cavalcante Alencar <
alexandre.alencar at gmail.com> wrote:

> Hi Michel,
>
> On Sat, Apr 18, 2009 at 10:20 AM, michael ricordeau
> <michael.ricordeau at gmail.com> wrote:
> > Hello,
> >
> > if you want to send custom ie in an outgoing call, check :
> >
> > int q931_setup(struct pri *pri, q931_call *c, struct pri_sr *req)
> >
> > and static int setup_ies[]
> >
> > in q931.c  .
> >
>
> I added the reverse charging indication IE to setup_ies[] struct
>
> > To be set correctly you must declare your custom ie in
> >
> > static struct ie ies[]    ( Array of struct ie  in q931.c )  :
> >
> > your custom ie would be set like this :
> >
> > {1, Q931_REVERSE_CHARGE_INDIC, "Reverse charge indicator",
> > dump__reverse_indicator, receive_reverse_indicator,
> > transmit_reverse_indicator },
> >
>
> I just added the functions for dump, receive and transmit
> (dump_reverse_charge_indic, receive_reverse_charge_indic,
> transmit_reverse_charge_indic) to existing declaration.
>
> > (for descriptions of values, see struct ie  in q931.c)
> >
> > and set functions :
> >
> > static FUNC_DUMP(dump_reverse_indicator)
> >
>
> done
>
> > static FUNC_RECV(receive_reverse_indicator)
> >
>
> done
>
> > static FUNC_SEND(transmit_reverse_indicator)
> >
>
> done
> >
> >
>
> But I still with problems with this... here is the code I canged from
> libpri 1.4.9
>
> http://201.57.179.27/~alexandre.alencar/q931.c
> http://201.57.179.27/~alexandre.alencar/pri_q931.h
> http://201.57.179.27/~alexandre.alencar/pri_internal.h
> http://201.57.179.27/~alexandre.alencar/libpri.h
>
> If you can take a look and give me some light what I am missing... I
> will appreciate.
>
> >
> > On Fri, Apr 17, 2009 at 10:49 PM, Alexandre Cavalcante Alencar
> > <alexandre.alencar at gmail.com> wrote:
> >> Hi Guys,
> >>
> >> I am trying to enable chan_dahdi.c to selectively block ISDN reverse
> >> charging calls (collect calls). This kind of call get identified by
> >> the IE 74 (0x4A) when it arrives set with a new call.
> >>
> >> I made some code to identify it and block the call as needed, but I
> >> need to make collect calls (add IE 74 to outgoing calls) to test the
> >> code as I am using a loop between two spans to test it.
> >>
> >> The code I am trying to use for adding the IE 74 is here at
> >> pastebin.ca alongside with it's generated log of one call
> >>
> >> http://www.pastebin.ca/1395196
> >>
> >> If someone here knows LibPRI and ISDN and can help me get this
> >> working, I will appreciate. I don't have much experience with LibPRI
> >> and ISDN protocol internals, and I need this hack so I can test the
> >> code to block the collect calls, since I don't have a telco ISDN link
> >> available.
> >>
> >> A 'patch' to block all collect calls (not flexible)
> >> http://bugs.digium.com/view.php?id=13760
> >>
> >> References of people asking for this feature
> >>
> http://lists.digium.com/pipermail/asterisk-dev/2004-November/007500.html
> >> http://lists.digium.com/pipermail/asterisk-users/2005-July/109268.html
> >>
> http://lists.digium.com/pipermail/asterisk-users/2007-October/198692.html
> >>
> >> Regards,
> >>
> >> --
> >> Alexandre C Alencar (Skarmeth)
> >> http://blog.alexandrealencar.net/
> >> http://www.alexandrealencar.net/
> >> http://people.debian-ce.org/skarmeth/
> >>
> >> --
> >> Alexandre C Alencar (Skarmeth)
> >> http://blog.alexandrealencar.net/
> >> http://www.alexandrealencar.net/
> >> http://people.debian-ce.org/skarmeth/
> >>
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> >>
> >
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>
>
> --
> Alexandre C Alencar (Skarmeth)
> http://blog.alexandrealencar.net/
> http://www.alexandrealencar.net/
> http://people.debian-ce.org/skarmeth/
>
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