asterisk users - Aug 2004 - RxFax - tiff file problem

Hi all,
We use tiff version 3.5.7-2 and spandsp-0.0.1k with asterisk version 0.7.2-4 on
debian unstable. Our asterisk server receives calls and
faxes from a mobile operator. We are connected to their Cisco router which
connects to our asterisk over VoIP that goes inside a Vlan over
100Mbit fiber which passes a few switches. RxFax works and we receive faxes, but
the tiff file is sometimes malformed although the fax
seems to be received correctly. We suspect something happens on the VoIP
channel, but cannot prove it. The other possibility is that the
server is not powerful enough (it is under load of about 2.0).
You can see at http://sbekova.mail.bg/fax/ an example of a received tiff file,
some audio log files and debug log.
Please advise on where to search for the problem:
 - is the server too slow
 - are the switches and/or routers changing the packet order
 - is there something else?
Thanks in advance.

--
 Snezhana Bekova<br/><br/>
------------------------<br>
<a target='_blank'
href="http://mail.bg/ads/adclick.php?bannerid=1470&amp;zoneid=13&amp;source=&amp;dest=http%3A%2F%2Fmail.bg&amp;ismap=">
1 Gb ???? ? Mail.bg<br>
????? SMS ?? 2 ??!<br>
http://mail.bg</a><div id="beacon_1470" style="position:
absolute; left: 0px; top: 0px; visibility: hidden;"><img
src='http://mail.bg/ads/adlog.php?bannerid=1470&amp;clientid=862&amp;zoneid=13&amp;source=&amp;block=0&amp;capping=0&amp;cb=04dbbb32c154e2dd4215d8d71741a042'
width='0' height='0' alt='' style='width: 0px;
height: 0px;'></div>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.digium.com/pipermail/asterisk-users/attachments/20040811/e2d6efff/attachment.htm

Generaly, voip server like asterisk, sip proxy, or h.323 proxy should
never reach load of 1.0. Should always be less than 1.

I think if load is 2.0 than your voice quality should be bad.

Spandsp is  CPU sensitive. Especialy if you will try to send faxes with
cpu load of 100% I think you will fail.

All the information above is only IMHO.
> 100Mbit fiber which passes a few switches. RxFax works and we receive
> faxes, but
> the tiff file is sometimes malformed although the fax
> seems to be received correctly. We suspect something happens on the VoIP
> channel, but cannot prove it. The other possibility is that the
> server is not powerful enough (it is under load of about 2.0).
> You can see at http://sbekova.mail.bg/fax/ an example of a received tiff
> file,
> some audio log files and debug log.
> Please advise on where to search for the problem:
>  - is the server too slow
>  - are the switches and/or routers changing the packet order
>  - is there something else?
> Thanks in advance.
>