[asterisk-users] Still on spandsp/app_fax and T.38

[Vinícius Fontes]

There you go: http://www.canall.com.br/wireshark_trace_t38_ffa.gz


Atenciosamente,

Vinícius Fontes
Gerente de Segurança da Informação
Canall Tecnologia em Comunicações
Passo Fundo - RS - Brasil
+55 54 2104-7000

Information Security Manager
Canall Tecnologia em Comunicações
Passo Fundo - RS - Brazil
+55 54 2104-7000

----- "Steve Underwood" <steveu at coppice.org> escreveu:

> Hi Vinícius,
> 
> Asterisk + Spandsp is working correctly in that call.
> 
> The other system sends bad training data at V.29/9600bps. Spandsp 
> rejects it.
> The other system sends bad training data at V.27ter/4800bps. Spandsp 
> rejects it.
> The other system sends clean training data at V.27ter/2400bps. Spandsp
> 
> accepts it.
> The other system sends a page at V.27ter/2400bps. Spandsp accepts it.
> 
> The bad training data is *really* bad. It should be 1.5s of all zero 
> bits. It starts off with zeros, but after a few hundred milliseconds
> it 
> changes to complete rubbish. I can't believe the Commetrex engine in 
> Digium's FAX for Asterisk would accept this. Perhaps something subtle
> 
> means they are sent the correct data. Can you send a wireshark log of
> a 
> call with FAX for Asterisk?
> 
> Steve
> 
> 
> On 02/06/2010 12:43 AM, Vinícius Fontes wrote:
> > No problem, hosted it on my company's website:
> http://www.canall.com.br/wireshark_trace_t38.gz.
> >
> >
> > Atenciosamente,
> >
> > Vinícius Fontes
> > Gerente de Segurança da Informação
> > Canall Tecnologia em Comunicações
> > Passo Fundo - RS - Brasil
> > +55 54 2104-7000
> >
> > Information Security Manager
> > Canall Tecnologia em Comunicações
> > Passo Fundo - RS - Brazil
> > +55 54 2104-7000
> >
> > ----- "Steve Underwood"<steveu at coppice.org>  escreveu:
> >
> >    
> >> On 02/06/2010 12:01 AM, Vinícius Fontes wrote:
> >>      
> >>> Here's the packet trace I promised:
> >>>        
> >> http://www.zshare.net/download/72186098494e6f8c/.
> >>      
> >>> As this is a production system, there were a few calls along with
> >>>        
> >> the one that interests us. The one you're looking for is that from
> >> 5433142499 at 10.150.65.16 to 5421047008 at 10.153.66.146. The provider
> has
> >> the address 10.150.65.16 and my box has the address 10.153.66.146.
> >>      
> >>>
> >>>        
> >> Can you put the file somewhere that actually works. I've downloaded
> it
> >> 5
> >> times now, and it has been cutoff at different points each time.
> These
> >>
> >> free file sharing services all seem to do this. Maybe they all run
> the
> >>
> >> same broken software.
> >>
> >> Steve
> >>      
> >