[asterisk-users] Need fax solution for 1.4.xx (Resolution)

[Steve Underwood]

On 05/13/2010 10:48 PM, William Stillwell (Lists) wrote:
> Ok, I ended up upgrading 2 of my 5 boxes to 1.6.2.7 , and using spandsp
> 0.0.6pre17, dahdi-linux-complete-2.3.0+2.3.0 , and enabled app_fax.
>
> Hint: you need to install spandsp then run ./configure then make menuselect
> :)
>
>
> I was able to send over a 50 page fax from coast to coast with 0 issues
>
> However, did get this message in CLI:
>
> [May 13 07:27:31] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:27:31] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:28:14] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:28:14] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:28:27] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:28:27] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:28:39] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
> [May 13 07:28:39] WARNING[14700] app_fax.c: WARNING T.30 ECM carrier not
> found
>
> However, there was no noticeable errors in the fax., googling, the error
> didn't seem to make much since.
>
> This was via copper pair, over traditional LD carrier, into PRI terminating
> into a Sangoma card.
>
> Intel Xeon x3460, 8 gb ram, 320gb raid 0 sata
>
>
> Thanks to all who offered suggestions, and such, I will try this out, and
> hopefully should work well, as Steve Hinted to a year ago.
>
> William Stillwell
>    
Those messages mean exactly what they say - a chunk of image data was 
not decoded by the modem. The FAX protocol will retry the missing chunk 
of image, and by the end of the FAX you probably see no problems at all. 
The FAX will, however, taking somewhat longer than it should.

Regards,
Steve