[Asterisk-Users] Alternatives to SpanDSP??

Julian J. M. julianjm at gmail.com
Tue Apr 26 06:11:03 MST 2005


Hi Steve,

I sent a mail to this list a week ago regarding exactly this issue.
Spandsp doesn't work for me (getting <200rows tiffs), but sending and
receiving faxes through a FXS-FXO bridge (a TDM11B) works without
problems.

My motherboard is based an Aopen AK33 (VIA686a chipset, KT133, 700Mhz
Athlon). I've disabled USB, 2nd IDE, VGA interrupt (runing without X),
sound.. I've also tweaked PCI settings in the BIOS, testing each time,
but I don't know what can be wrong. Here is some more info:

cat /proc/interrupts
           CPU0
  0:   23411526          XT-PIC  timer
  2:          0          XT-PIC  cascade
  4:         80          XT-PIC  serial
  8:          1          XT-PIC  rtc
 10:   23322936          XT-PIC  wctdm
 12:          1          XT-PIC  acpi
 14:      91663          XT-PIC  ide0
 15:      51573          XT-PIC  eth0
NMI:          0
ERR:          0

$ ./zttest
Opened pseudo zap interface, measuring accuracy...
99.975586% 99.987793% 99.975586% 99.987793% 99.987793% 99.987793% 99.987793%
99.987793% 99.987793% 99.975586% 99.987793% 99.987793% 99.987793%
99.987793% 99.987793%
99.987793% 99.975586% 99.987793% 99.975586% 99.987793% 99.987793%
99.987793% 99.987793%
99.975586% 99.987793%

Thanks
Julian J. M.

On 4/26/05, Steve Underwood <steveu at coppice.org> wrote:
> Why would you expect a bunch of fax modems to work any better than
> spandsp? If spandsp doesn't work reliably your system is very likely broken.
> 
> I have had hundreds of complaints about spandsp reliability. I have
> analysed at least 50 or 60 audio logs. I have found maybe 5 or 6 which
> has real spandsp problems. The rest had frame slips. Of the 5 or 6 with
> real problems, most have been fixed in the latest version. I have one
> weird audio log from a new HP combination printer and fax machine that i
> haven't sorted out yet. These HP machines really are total crap. I have
> workarounds in spandsp for several blatently wrong things they do. I
> don't yet know who is at fault with this latest problem.
> 
> Regards,
> Steve



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