[Asterisk-Users] Clarification on Fax capability?

[Pedro Miguel de Sousa Caria]

I've been trying this for a while and I have been unable to get a 
reliable connection betwen two Zaptel FXS interfaces, so the bridging 
does afect data transfer.

Anybody got some tunning tips to get this to work ?

I'm using a dual PIII with a ServerWorks Chipset, two TDM cards (8xFXS) 
and a Fritz Capi to connect to my telecom provider.

I can send faxes with some success, but receiving rate of success is 
less than 30%.

Fax information for Asterisk is difficult to come by is everybody using 
spandsp's way ?

Thx
Pedro Caria

On 15/fev/2005, at 15:05, Rich Adamson wrote:

>> On Tue, February 15, 2005 7:48 am, Rich Adamson said:
>>>  2) simply switching a fax call through * to a tip/ring interface of
>>>     some sort that has an attached traditional fax machine.
>>
>> Does the codec issue with #2 still apply if the incoming fax call is 
>> on a
>> Zaptel FXO interface?  Is the codec used when connecting two channels 
>> on
>> the same zaptel card or does the "native bridg[ing]" bypass that?
>
> Funny that you should ask. I just finished testing it using the
> faxdetect=incoming method, redirecting the call to a Cisco ata186.
> The incoming call arrived on a TDM fxo port. Received the fax header,
> but the remainder of the page was blank. The sender received a message
> indicating a failure.
>
> Best guess... the tdm driver problem is impacting the ability to send
> the fax tones reliably even with g711. Its very likely to be the
> interrupt latency and/or pci bus problem on this particular system.
>
>
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