[asterisk-users] Asterisk 1.8.7 and ReceiveFAX

[Larry Moore]

On 9/10/2011 1:29 AM, Administrator TOOTAI wrote:
> Le 07/10/2011 16:32, Kristijan Vrban a écrit :
>> remove the "c" argument
>
> Done but now I have
>
> [Oct  8 19:20:20] WARNING[8771]: res_fax.c:1508 receivefax_t38_init: 
> channel 'SIP/tootaiAUDIO-000000ea' refused to negotiate T.38
> [Oct  8 19:20:20] WARNING[8771]: res_fax.c:1529 receivefax_t38_init: 
> Audio FAX not allowed on channel 'SIP/tootaiAUDIO-000000ea' and T.38 
> negotiation failed; aborting.
> [Oct  8 19:20:20] ERROR[8771]: res_fax.c:1734 receivefax_exec: error 
> initializing channel 'SIP/tootaiAUDIO-000000ea' in T.38 mode
>
> How can I allow Audio FAX?
>
> I saw a discussion on asterisk-devel from january 2010 about new 
> spandsp where Kevin P. Fleming told you to do an "core show 
> application ReceiveFAX" to find out how to enable this feature. I'm 
> perhaps a little bit stupid but can't find any usable information 
> while using this command :-(
>

The Fallback option to T.30 is 'f'.

ReceiveFAX(filename,f)

See 
https://wiki.asterisk.org/wiki/display/AST/Application_ReceiveFAX+%28res_fax%29

Larry.