asterisk users - Aug 2003 - Fax Handled

Hello,

	Is there any configuration in zapata.conf for fax detection (or transmission)?
	When I try to send a fax trought asterisk, the line 'Fax Handled:' is
always set to "no". The scenario is:

[ata186]---sip---[asterisk]---e1 E&M---[pstn]

	Fax sometimes goes without problem and sometimes the fax machine can't send
the fax.

Thanks
Eduardo

On Fri, 2003-08-08 at 10:29, Eduardo Goncalves wrote:
> Hello,
> 
> 	Is there any configuration in zapata.conf for fax detection (or
transmission)?
> 	When I try to send a fax trought asterisk, the line 'Fax Handled:'
is always set to "no". The scenario is:
> 
> [ata186]---sip---[asterisk]---e1 E&M---[pstn]
> 
> 	Fax sometimes goes without problem and sometimes the fax machine can't
send the fax.
If your SIP link is over a long line, or that has much in the way of
variable latency, then this will just have to be expected behavior. The
problems listed above are not unique to asterisk but the VoIP traffic
trying to carry modem call. You would be better off using a network fax
gateway that accepts the image to be faxed for you. You will find that
it uses way less bandwidth this way also.  
-- 
Steven Critchfield  <critch@basesys.com>

> From: Martin Pycko [mailto:martinp@digium.com]
> 
> On analog ports you need to Answer
> Ringing
> Wait,2
> and then do something .....
> 
> That should detect faxes.
Martin,

Could you show an example of this for an incoming PRI -> FXS analog fax?

Regards,

--- Gavin