[Freeswitch-dev] H323 and Freeswitch

Tuyan Özipek tuyanozipek at gmail.com
Mon May 12 23:27:48 EDT 2008


Actually , it used to work as Anthony wanted it to work. Rtp being
handled totally by freeswitch, while the h323
signalling uses opal. When you have a look at Yate or asterisk h323
channel that uses h323plus, you will see that
its the same h323external_rtp_channel that i used in the "proof of
concept" h323 driver.
(Also , please note that main design is from Lukasz Zwierko.)

As i remember, h323 driver, should set the codec of the channel to
what it receives from h323 side of the call.
(yes, there was no codec negotiation at the time, but i was able to
route calls with gsm from mod_opal to mod_sofia and to FS conference.
with or without being on the media path. ) with some basic profile
support and etc.

With the newest changes on the opal code, it may be possible to use (i
am not sure though) external rtp channel for sip also. Which means
opal can do sip for freeswitch as well.

I believe that both Opal and freeswitch are really nice projects that
can benefit from each other.


Please keep up the nice work.

Tuyan Ozipek



On Mon, May 12, 2008 at 1:21 PM, Anthony Minessale
<anthony.minessale at gmail.com> wrote:
> The problem is we need lower level access to the OPAL than that effort
> provided.  It uses OPAL as the media engine and even if it's completed, the
> way it's designed all calls will appear as decoded signed linear audio and
> there will be no way to do signal bridging with point to point rtp and use
> FS codecs etc.
>
> The new module will use a C front end to OPAL developed by the author just
> for the way we need to use it.  So unless you can achieve what I am
> describing from the existing mod_opal the route i described is the way to
> go.
>
>
>
>
> On Mon, May 12, 2008 at 12:05 PM, Vlasis Hatzistavrou (KTI)
> <vhatz at kinetix.gr> wrote:
> > So, in other words there is no use for us to try and build on the
> > current mod_opal from Tuyan?
> >
> > We just thought that since a good part of the work is already done in
> > Tuyan's mod_opal, H323 support would be available sooner than building
> > it from scratch, right?
> >
> >
> > Anthony Minessale wrote:
> > > It's a new module we are going to create with the help of the actual
> > > OPAL developer.
> > > We are looking for about 10k to keep it in focus long enough to get it
> > > completed.
> > >
> > >
> > > On Mon, May 12, 2008 at 11:42 AM, Vlasis Hatzistavrou (KTI)
> >
> > > <vhatz at kinetix.gr <mailto:vhatz at kinetix.gr>> wrote:
> > >
> > >     Hello,
> > >
> > >     Is this OPAL based module based on mod_opal that Tuyan Ozipek has
> been
> > >     developing or is this something completely new?
> > >
> > >     We were actually planning on assisting with testing & developing
> H323
> > >     support for a carrier environment. However, since a funding option
> is
> > >     available, what is the sum that is needed for developing an H323
> module
> > >     for Freeswitch?
> > >
> > >     Best regards,
> > >     Vlasis Hatzistavrou
> > >     Kinetix Tele.com International Inc.
> > >
> > >     Anthony Minessale wrote:
> > >      > We are planning to make an OPAL based module in the near future
> > >     but it's
> > >      > moving slow because none of the interested parties want to  fund
> the
> > >      > development.
> > >      >
> > >      >
> > >      > On Mon, May 12, 2008 at 10:56 AM, Kinetix Tele.com Mailing Lists
> > >      > <regs at kinetix.gr <mailto:regs at kinetix.gr> <mailto:regs at kinetix.gr
> >
> >
> >
> > >     <mailto:regs at kinetix.gr>>> wrote:
> > >      >
> > >      >     Hi,
> > >      >
> > >      >        I am interested in the topic of Freewitch supporting the
> h323
> > >      >     protocol.
> > >      >     I have seen various attempts to achieve that since the
> > >     beginning of the
> > >      >     whole
> > >      >     project. The Woomera approach is in suspended mode as I saw
> > >     in the wiki.
> > >      >     I am also aware of a separate Opal approach from Tuyan
> Ozipek. My
> > >      >     technical
> > >      >     director (Hatzistavrou Vlasis) exchanged some emails with
> > >     Tuyan some
> > >      >     time ago, but
> > >      >     I don't know if the effort is still active.
> > >      >
> > >      >        Could someone please inform me if there is an "official"
> (or
> > >      >     something close to that)
> > >      >     effort of enabling H323 support for Freeswitch, because we
> (as a
> > >      >     company) are willing
> > >      >     to participate and contribute (to the extend that we can) to
> > >     such an
> > >      >     effort.
> > >      >
> > >      >        If someone has any information on the subject please
> > >     respond to the
> > >      >     mailing list.
> > >      >
> > >      >     Kind Regards,
> > >      >
> > >      >     Apostolos Pantsiopoulos,
> > >      >     Kinetix Tele.com Int. R&D
> > >      >
> > >      >
> > >      >
> > >      >     _______________________________________________
> > >      >     Freeswitch-dev mailing list
> > >      >     Freeswitch-dev at lists.freeswitch.org
> > >     <mailto:Freeswitch-dev at lists.freeswitch.org>
> > >      >     <mailto:Freeswitch-dev at lists.freeswitch.org
> > >     <mailto:Freeswitch-dev at lists.freeswitch.org>>
> > >      >     http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
> > >      >
> > >
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev
> > >      >     http://www.freeswitch.org
> > >      >
> > >      >
> > >      >
> > >      >
> > >      > --
> > >      > Anthony Minessale II
> > >      >
> > >      > FreeSWITCH http://www.freeswitch.org/
> > >      > ClueCon http://www.cluecon.com/
> > >      >
> > >      > AIM: anthm
> > >      > MSN:anthony_minessale at hotmail.com
> > >     <mailto:MSN%3Aanthony_minessale at hotmail.com>
> > >      > <mailto:MSN%3Aanthony_minessale at hotmail.com
> > >     <mailto:MSN%253Aanthony_minessale at hotmail.com>>
> >
> > >      > GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
> > >     <mailto:PAYPAL%3Aanthony.minessale at gmail.com>
> > >      > <mailto:PAYPAL%3Aanthony.minessale at gmail.com
> > >     <mailto:PAYPAL%253Aanthony.minessale at gmail.com>>
> >
> > >      > IRC: irc.freenode.net <http://irc.freenode.net>
> > >     <http://irc.freenode.net> #freeswitch
> > >      >
> > >      > FreeSWITCH Developer Conference
> > >      > sip:888 at conference.freeswitch.org
> > >     <mailto:sip%3A888 at conference.freeswitch.org>
> > >      > <mailto:sip%3A888 at conference.freeswitch.org
> > >     <mailto:sip%253A888 at conference.freeswitch.org>>
> >
> > >      > iax:guest at conference.freeswitch.org/888
> > >     <http://iax:guest@conference.freeswitch.org/888>
> > >      > <http://iax:guest@conference.freeswitch.org/888>
> > >      > googletalk:conf+888 at conference.freeswitch.org
> > >     <mailto:googletalk%3Aconf%2B888 at conference.freeswitch.org>
> > >      > <mailto:googletalk%3Aconf%2B888 at conference.freeswitch.org
> > >     <mailto:googletalk%253Aconf%252B888 at conference.freeswitch.org>>
> >
> > >      > pstn:213-799-1400
> > >      >
> > >      >
> > >      >
> > >
> ------------------------------------------------------------------------
> > >      >
> > >      > _______________________________________________
> > >      > Freeswitch-dev mailing list
> > >      > Freeswitch-dev at lists.freeswitch.org
> >
> >
> >
> > >     <mailto:Freeswitch-dev at lists.freeswitch.org>
> > >      > http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
> > >      >
> > >
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev
> > >      > http://www.freeswitch.org
> > >
> > >     _______________________________________________
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> > >     Freeswitch-dev at lists.freeswitch.org
> > >     <mailto:Freeswitch-dev at lists.freeswitch.org>
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> > >
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> > >     http://www.freeswitch.org
> > >
> > >
> > >
> > >
> > > --
> > > Anthony Minessale II
> > >
> > > FreeSWITCH http://www.freeswitch.org/
> > > ClueCon http://www.cluecon.com/
> > >
> > > AIM: anthm
> > > MSN:anthony_minessale at hotmail.com
> > > <mailto:MSN%3Aanthony_minessale at hotmail.com>
> > > GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
> > > <mailto:PAYPAL%3Aanthony.minessale at gmail.com>
> > > IRC: irc.freenode.net <http://irc.freenode.net> #freeswitch
> > >
> > > FreeSWITCH Developer Conference
> > > sip:888 at conference.freeswitch.org
> > > <mailto:sip%3A888 at conference.freeswitch.org>
> > > iax:guest at conference.freeswitch.org/888
> > > <http://iax:guest@conference.freeswitch.org/888>
> > > googletalk:conf+888 at conference.freeswitch.org
> > > <mailto:googletalk%3Aconf%2B888 at conference.freeswitch.org>
> > > pstn:213-799-1400
> > >
> > >
> > > ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > Freeswitch-dev mailing list
> > > Freeswitch-dev at lists.freeswitch.org
> > > http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
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> > > http://www.freeswitch.org
> >
> > _______________________________________________
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> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
> > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev
> > http://www.freeswitch.org
> >
>
>
>
> --
> Anthony Minessale II
>
> FreeSWITCH http://www.freeswitch.org/
> ClueCon http://www.cluecon.com/
>
> AIM: anthm
> MSN:anthony_minessale at hotmail.com
> GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
>  IRC: irc.freenode.net #freeswitch
>
>
> FreeSWITCH Developer Conference
> sip:888 at conference.freeswitch.org
> iax:guest at conference.freeswitch.org/888
>  googletalk:conf+888 at conference.freeswitch.org
> pstn:213-799-1400
> _______________________________________________
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>  http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
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>



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