[asterisk-users] Fax and Asterisk

[Tzafrir Cohen]

On Sat, Jul 07, 2007 at 08:29:57PM +0200, Andrew Nowrot wrote:
> Hi
> 
> I am trying to build reliable fax solution with asterisk, iaxmodem and
> hylafax. I am attempting to do this on Compaq DL-360 with 2 pentium 3
> 1.2GHz (512 cache) and 2GB of RAM. I am using a Sangoma A101. After
> installing
> the newest zaptel and wanpipe-3.1.0 beta I did zttest and it didn't give me
> good results:
> 
> 99.975586% 99.975586% 99.975586% 99.975586% 99.975586% 99.975586% 99.975586%
> 99.975586% 99.975586% 99.975586% 99.975586% 99.975586% 99.975586% 99.975586%
> --- Results after 14 passes ---
> Best: 99.975586 -- Worst: 99.975586 -- Average: 99.975586
> 
> Sangoma card does not share interrupt with other device.
> I am running on Debian lenny with custom  2.6.21.5 kernel with grsec patch.
> I configured the kernel with timer frequency of 1000 Hz, with RTC
> interrupts, and with enhanced real time clock support.

The kernel timer shouldn't be relevant. The timing should come from the
card, and not from ztdummy. Make sure that the timing comes from the
card and not from ztdummy.

Small slightly off-topic plug:

Is the following extra text added to the Zaptel README of any use to
explain a bit about the Zaptel timing source?

  http://svn.digium.com/view/zaptel/branches/1.4/README?r1=2703&r2=2702&pathrev=2703

  
> The question is what else can I do (kernel configuration or any kind of
> changing) to improve zttest?
> Is it possible to built reliable fax service with this result of zttest?

What is the target of the fax? 
Fax from where to where?

-- 
               Tzafrir Cohen       
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