This message is pointed directly to Steve Underwood. I tought it would not be 
nice to directly email him with a question that interests a good part of the 
Asterisk community, so here it is. :)

Steve, remember a few days ago when we discussed about issues on Asterisk 
1.6.1.13 and T.38 fax reception? Well I opened an issue on Mantis 
(https://issues.asterisk.org/view.php?id=16756) and turns out it might be 
spandsp-related.

What happens is, when I use app_fax to receive a fax using T.38, I get very low 
transmission rates, and about 30% of the faxes are just not transmitted at all. 
2400bps is not uncommon. If instead of T.38 I use an analog landline connected 
to that very same Asterisk box, app_fax works wonderfully well transmitting at 
full 9600bps. Just to rule out Asterisk's T.38 handling, I noticed that Fax For 
Asterisk works perfectly with T.38, also on that same box.

I'll be happy to provide you any info that could help solve this issue.


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

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