Re: Interoperability Issues

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Tjapko,

Issues like can be addressed within the OpenH323 stack, which already
contains code to detect specific endpoint versions and vendors, to act
appropriately.

If you have a fix, send it to me and I will put it into the stack if
possible.

   Craig

On Thu, 26 Feb 2004 21:24:01 +0100
"iTS Consult@ncy" <itsc99@xxxxxxxxx> wrote:

> Hi Michael, Thanks for answering...
> 
> My question is if this can or should be applied to gnugk like some
> autosensing feature without having to guess why your calls get disconnected
> when dealing with non v4 complient endpoints under certain circumstances.
> ( tunneled)
> 
> I have made my fix but outsite gnugk and simply would like to know if it can
> be more transparent and for everyone who is using gnugk. After all is looks
> like a backward compatability problem to me.
> 
> Tjapko.
> 
> 
> -----Original Message-----
> From: openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx
> [mailto:openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx]On Behalf Of
> Zygmuntowicz Michal
> Sent: Jueves, 26 de Febrero de 2004 10:22 p.m.
> To: openh323gk-users@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Interoperability Issues
> 
> 
> That's not related to the terminalCapability set. You need
> to set Facility body to empty for V1,2,3 endpoints (some work
> without this, some does not) when sending H.245 tunneled
> messages. The V4 recommendation requires the body
> to carry Facility_UUIE with reason code set to transportedInformation.
> The problem is that some older endpoints receiving Facility
> with non-empty body think it is a call redirection.
> 
> ----- Original Message -----
> From: "iTS Consult@ncy" <itsc99@xxxxxxxxx>
> Sent: Thursday, February 26, 2004 3:45 PM
> 
> 
> > I experienced similar problems and posted this a while ago and I think it
> is
> > coming from a H323 protocol mismatch between version 2 and 4. I am not
> > really sure about this.
> >
> > Bottom line: If you can hack into the code than be sure that you replace
> the
> > empty with a facility or the facility with an empty TerminalCapabilitySet
> > message to make it all happen.
> >
> > I have found this in the ITU h323 manual as a change in the latest v4
> h323
> > protocol and they mention that there are problems with backward
> > compatibility.
> >
> > Unfortunately I am not a coder myself just a dumpanalyser so if you can
> > solve this issue than build it into the gnugk.
> >
> > Tjapko.
> 
> 
> 
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