Faxing and PCI (was Re: [Asterisk-Users] Digium cards,

[Lee Howard]

Doug Lytle wrote:

> Steve Underwood wrote:
>
>> Doug Lytle wrote:
>>
>>> Nicholas Kathmann wrote:
>>
>>
>>
>> If you need to tweak gains something is seriously wrong.
>>
> The 2 fax machines that I was having problem with were failing to 
> train at 9600bps, they would then try at 7200 and finally train at 
> 4800.  Around 15 pages into the fax they would fail with a, "Failed to 
> detect high speed-data carrier" and disconnect.  Increasing the rxgain 
> to 3.0 and they now train at 9600bps and faxes complete. 


This is probably the reason why in iaxmodem-0.1.3 this was done:

  make V.29 rx more sensitive (spandsp)

Lee.