asterisk users - Feb 2009 - How to set udptl.conf ?

Hi,

voip-info.org is almost silent regarding udptl.conf except with
 "Depending on your fax device (such as the Linksys 3102) you may have to
edit the udptl.conf file. The error correction type that is sent is usually
the culprit of many problems with ATAs and T.38 providers."

Can anyone elaborate on this ?

Regards
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Olivier wrote:
> Hi,
> 
> voip-info.org <http://voip-info.org> is almost silent regarding 
> udptl.conf except with
>  "Depending on your fax device (such as the Linksys 3102) you may have
> to edit the udptl.conf file. The error correction type that is sent is 
> usually the culprit of many problems with ATAs and T.38 providers."
> 
> Can anyone elaborate on this ?
> 
> Regards
> 
If you look at configs/udptl.conf.sample, all the options are outlined there, 
although the explanations are very brief. The most likely setting that is 
referred to on voipinfo is the T38FaxUdpEC setting. Possible values are 
t38UDPFEC and t38UDPRedundancy, with the former being the default. Looking at 
the code, it appears that the options are case-sensitive for udptl.conf, which 
is quite a bit different from the rest of Asterisk, so be sure to get the case 
correct.

Mark Michelson