[Asterisk-Users] Asterisk - fax - spandsp

[Colin Anderson]

 > But when sending a fax (from a Brother fax machine) the image received is
always corrupted: lines are missing,  > segments of the faxed page aren't
there etc... 
 
Run ZTTEST in /usr/src/zaptel. Your output should be 99.98XXX% or higher. If
it isn't the corruption is most likely because of IRQ misses by the card.
Run it for a couple of minutes. Your "worst" should be 99.98XXX%. Subtle
timing errors and IRQ misses that are not audible will screw up a fax. Also
timing errors on your PRI are another cause. You have to ensure your card is
recieving timing correctly by the telco. and your span is set up
appropriately to reflect that. 
 
Ensure the usual things are true: turn off any service you do not absolutely
need, disable Hyperthreading in the CPU, turn off any device that you do not
need, such as sound card, USB interface, serial ports, parallell ports,
everything you can think of is off. 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20050513/8daea177/attachment.htm