asterisk users - Jun 2009 - [hylafax-users] "No Carrier detected" sendig fax with Hylafax-Iaxmodem-Asterisk

fred wrote:
>
> That?s being said, before going through the T38 Gateway tests, I?ve 
> tried first the Fax2mail and Mail2fax solution with (Hylafax + 
> Iaxmodem + Asterisk), to make a well-tested Asterisk solution working 
> and I?m already facing some problems. Receiving faxes is ok but 
> sending faxes gets stuck into ?No Carrier Detected?. Debugging leads 
> me to the following remarks:
>
> I) _Carrier or Called Station Identifier or (CED) tone_ from the 
> called fax machine is received since recorded (iaxmdm-iax.wav attached)
>
The audio coming from the receiver is quite audibly corrupted (just 
listen to it and then compare to when you call a fax machine over TDM). 
No doubt you are attempting to pass fax audio through VoIP. Please read:

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Thanks,

Lee.

Lee Howard schrieb:
> fred wrote:
>> That?s being said, before going through the T38 Gateway tests, I?ve 
>> tried first the Fax2mail and Mail2fax solution with (Hylafax + 
>> Iaxmodem + Asterisk), to make a well-tested Asterisk solution working 
>> and I?m already facing some problems. Receiving faxes is ok but 
>> sending faxes gets stuck into ?No Carrier Detected?. Debugging leads 
>> me to the following remarks:
>>
>> I) _Carrier or Called Station Identifier or (CED) tone_ from the 
>> called fax machine is received since recorded (iaxmdm-iax.wav attached)
>>
> 
> The audio coming from the receiver is quite audibly corrupted (just 
> listen to it and then compare to when you call a fax machine over TDM). 
> No doubt you are attempting to pass fax audio through VoIP. Please read:
> 
Is there a tool where I can feed the captured audio (e.g. extracted from
tcpdump) in order to get a fax image ? Can hylafax in a certain mode do
that ?

Thanks.

Regards

Hans