[Asterisk-Users] Fax with spandsp + zaphfc

[Thibault Lamy]

Hi all,

I'm trying to enable faxes on my asterisk box using spandsp
version pre10. The outgoing and incomiong calls work great,
but i have problem with faxes.

The fax detection works, the RxFax application is called,
but i only receive the beginning of the faxes (variable
between 3 to 5 first inches of the fax).
The output .tif file generated is then cut off.

My setup is : asterisk 1.0.6+zaphfc driver from bristuff RC7j.
Bewan BRI PCI card. zapata echo cancellation is disabled.

Where is some log snippets :

Mar  2 16:05:33 VERBOSE[12844]:     -- Executing RxFAX("Zap/1-1", 
"/var/spool/asterisk/fax/asterisk-12844-1109775932.0.tif") in new st
ack
Mar  2 16:06:38 DEBUG[12844]: 
=========================================================================
=====
Mar  2 16:06:38 DEBUG[12844]: Pages transferred:  1
Mar  2 16:06:38 DEBUG[12844]: Image size:         1728 x 82
Mar  2 16:06:38 DEBUG[12844]: Image resolution    7700 x 3850
Mar  2 16:06:38 DEBUG[12844]: Transfer Rate:      9600
Mar  2 16:06:38 DEBUG[12844]: Bad rows            71
Mar  2 16:06:38 DEBUG[12844]: Longest bad row run 34
Mar  2 16:06:38 DEBUG[12844]: Compression type    2
Mar  2 16:06:38 DEBUG[12844]: Image size (bytes)  0
Mar  2 16:06:38 DEBUG[12844]: 
=========================================================================
=====
Mar  2 16:06:41 DEBUG[12844]: 
=========================================================================
=====
Mar  2 16:06:41 DEBUG[12844]: Fax successfully received.
Mar  2 16:06:41 DEBUG[12844]: Remote station id: 0142401377
Mar  2 16:06:41 DEBUG[12844]: Local station id:
Mar  2 16:06:41 DEBUG[12844]: Pages transferred: 1
Mar  2 16:06:41 DEBUG[12844]: Image resolution:  7700 x 3850
Mar  2 16:06:41 DEBUG[12844]: Transfer Rate:     9600
Mar  2 16:06:41 DEBUG[12844]: 
=========================================================================
=====


Do anyone of you have any experience with spandsp on zaphfc compliant card ?

Thanks a lot

Thibault