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

[Lee Howard]

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.