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Ardjan Zwartjes

2007-Jan-22 10:06 UTC

[asterisk-users] Problems with rxfax

Dear list,
 
The company I'm working for is trying to use app_rxfax to receive faxes
on an Asterisk machine. Our initial tests looked very promising, but
unfortunately we've encountered some problems. We've been trying to
solve these problems for quite some time now, but we're running out of
options. So I really hope that somebody can give some help here.
Basically our set-up is this: We have an Asterisk server (version 1.2.7)
with an ISDN trunk (Sangoma A104D), we've configured asterisk to run
rxfax on a specified extension. Originally we started out with spandsp
0.0.2pre26 and the original app_rxfax for spandsp 0.0.2. Some of the
faxes were coming in perfectly, but soon we noticed that quite often
there were substantial pieces of the fax missing in the resulting tif
file. 
We've tried the following to solve these problems:
 
- We've checked the timing settings for the ISDN trunk, these seem to be
ok.
- We've tried several versions of libtiff (currently we are using
3.7.2).
- We've tried using 0.0.3 versions of spandsp (since we're using
asterisk 1.2.7 we had to modify app_rxfax.c to work).
- We've created a custom dialplan application to disable the echo
cancellation on the isdn channel on which the fax is received.
- We've tried various settings for t30_set_supported_compressions,
t30_set_supported_image_sizes, t30_set_supported_modems and
t30_set_supported_resolutions (I must confes that I didn't really know
which settings to use here, but we have tried a lot of them).
- We've tried several fax machines to send the faxes, ranging from
simple fax-modems to large dedicated fax machines.
 
But still a lot of faxes give problems, either the tif is missing large
portions, or the fax isn't received at all. At the bottom of this mail
are 2 examples of the logging when it goes wrong. I really hope that
somebody can give a few pointers. Thanks in advance,
 
Kind regards,
Ardjan Zwartjes,
Telecats
 
======= Example 1 ======================== 
Jan 19 14:49:14 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:14 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:17 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
Jan 19 14:49:17 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:19 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
Jan 19 14:49:19 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:20 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
V.21 to V.29 (-22.18dBm0)
Jan 19 14:49:21 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:21 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
V.21 to V.29 (-17.84dBm0)
Jan 19 14:49:38 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
Jan 19 14:49:38 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:39 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:39 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:41 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
Jan 19 14:49:41 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:42 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
V.21 to V.29 (-19.13dBm0)
Jan 19 14:49:48 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
Jan 19 14:49:48 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:49 DEBUG[24218] app_rxfax.c: Pages transferred:  1
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image size:         1728 x
1192
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image resolution    8037 x
7700
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Transfer Rate:      9600
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Bad rows            0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Longest bad row run 0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Compression type    3
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image size (bytes)  0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:49 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 1
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:51 DEBUG[24218] app_rxfax.c: Fax successfully received.
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Remote station id: 
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Local station id:  "Test
Fax"
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Pages transferred: 1
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Image resolution:  8037 x 7700
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Transfer Rate:     9600
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 13
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 13
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 19 14:49:53 DEBUG[24218] app_rxfax.c: Got hangup

=========Example 2=================Jan 18 09:56:12 VERBOSE[4185] logger.c:    
-- Executing
RxFAX("Zap/31-1", "/tmp/1169110572.239.tif|debug") in new
stack
Jan 18 09:56:15 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
Jan 18 09:56:15 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 4
Jan 18 09:56:17 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 4
Jan 18 09:56:17 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 0
Jan 18 09:56:19 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 8
Jan 18 09:56:19 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 0
Jan 18 09:56:26 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
Jan 18 09:56:26 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 4
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 1
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c:
============================================================================Jan
18 09:56:27 DEBUG[4185] app_rxfax.c: Fax receive not successful -
result (31) Carrier lost during fax receive.
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c:
============================================================================Jan
18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 13
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 13
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 18 09:56:39 DEBUG[4185] app_rxfax.c: Got hangup

 
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Doug Lytle

2007-Jan-22 12:05 UTC

head link

[asterisk-users] Problems with rxfax

Ardjan Zwartjes wrote:> Dear list,
>  
> The company I'm working for is trying to use app_rxfax to receive 
> faxes on an Asterisk machine. Our initial tests looked very promising, 
> but unfortunately we've encountered some problems. We've been
trying
> to solve these problems for quite some time now, but we're running out 
> of options. So I really hope that somebody can give some help here.
Save yourself some time and frustration and type iaxmodem and HylaFAX+ 
on the Asterisk machine, you won't regret it.

http://iaxmodem.sourceforge.net
http://hylafax.sourceforge.net

Doug

-- 
 
Ben Franklin quote:

"Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety."

Darren Nay

2007-Jan-22 12:06 UTC

head link

[asterisk-users] Problems with rxfax

Just out of curiosity.  Would you mind sharing that app_rxfax.c file
that you modified to work with SpanDSP 0.0.3?

 

TIA,

Darren

 

________________________________

From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Ardjan
Zwartjes
Sent: Monday, January 22, 2007 2:12 AM
To: asterisk-users@lists.digium.com
Subject: [asterisk-users] Problems with rxfax

 

Dear list,

 

The company I'm working for is trying to use app_rxfax to receive faxes
on an Asterisk machine. Our initial tests looked very promising, but
unfortunately we've encountered some problems. We've been trying to
solve these problems for quite some time now, but we're running out of
options. So I really hope that somebody can give some help here.

Basically our set-up is this: We have an Asterisk server (version 1.2.7)
with an ISDN trunk (Sangoma A104D), we've configured asterisk to run
rxfax on a specified extension. Originally we started out with spandsp
0.0.2pre26 and the original app_rxfax for spandsp 0.0.2. Some of the
faxes were coming in perfectly, but soon we noticed that quite often
there were substantial pieces of the fax missing in the resulting tif
file. 

We've tried the following to solve these problems:

 

- We've checked the timing settings for the ISDN trunk, these seem to be
ok.

- We've tried several versions of libtiff (currently we are using
3.7.2).

- We've tried using 0.0.3 versions of spandsp (since we're using
asterisk 1.2.7 we had to modify app_rxfax.c to work).

- We've created a custom dialplan application to disable the echo
cancellation on the isdn channel on which the fax is received.

- We've tried various settings for t30_set_supported_compressions,
t30_set_supported_image_sizes, t30_set_supported_modems and
t30_set_supported_resolutions (I must confes that I didn't really know
which settings to use here, but we have tried a lot of them).

- We've tried several fax machines to send the faxes, ranging from
simple fax-modems to large dedicated fax machines.

 

But still a lot of faxes give problems, either the tif is missing large
portions, or the fax isn't received at all. At the bottom of this mail
are 2 examples of the logging when it goes wrong. I really hope that
somebody can give a few pointers. Thanks in advance,

 

Kind regards,

Ardjan Zwartjes,

Telecats

 

======= Example 1 ========================
 

Jan 19 14:49:14 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:14 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:17 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
Jan 19 14:49:17 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:19 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
Jan 19 14:49:19 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:20 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
V.21 to V.29 (-22.18dBm0)
Jan 19 14:49:21 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:21 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
V.21 to V.29 (-17.84dBm0)
Jan 19 14:49:38 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
Jan 19 14:49:38 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:39 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:39 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:41 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
Jan 19 14:49:41 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:42 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
V.21 to V.29 (-19.13dBm0)
Jan 19 14:49:48 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
Jan 19 14:49:48 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:49 DEBUG[24218] app_rxfax.c: Pages transferred:  1
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image size:         1728 x
1192
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image resolution    8037 x
7700
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Transfer Rate:      9600
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Bad rows            0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Longest bad row run 0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Compression type    3
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image size (bytes)  0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:49 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 1
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:51 DEBUG[24218] app_rxfax.c: Fax successfully received.
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Remote station id: 

Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Local station id:  "Test
Fax"
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Pages transferred: 1
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Image resolution:  8037 x 7700
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Transfer Rate:     9600
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c:
============================================================================Jan
19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 13
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 13
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 19 14:49:53 DEBUG[24218] app_rxfax.c: Got hangup

=========Example 2=================
Jan 18 09:56:12 VERBOSE[4185] logger.c:     -- Executing
RxFAX("Zap/31-1", "/tmp/1169110572.239.tif|debug") in new
stack
Jan 18 09:56:15 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
Jan 18 09:56:15 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 4
Jan 18 09:56:17 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 4
Jan 18 09:56:17 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 0
Jan 18 09:56:19 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 8
Jan 18 09:56:19 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 0
Jan 18 09:56:26 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
Jan 18 09:56:26 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 4
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 1
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c:
============================================================================Jan
18 09:56:27 DEBUG[4185] app_rxfax.c: Fax receive not successful -
result (31) Carrier lost during fax receive.
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c:
============================================================================Jan
18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 13
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 13
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX FAX exchange complete
Jan 18 09:56:39 DEBUG[4185] app_rxfax.c: Got hangup

 

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Marco Mouta

2007-Jan-22 13:19 UTC

head link

[asterisk-users] Problems with rxfax

I would install Hylafax(opensource too) with Asterisk via IAXModem, it
worth! You can keep all the features, hylafax running in same server or a
separated one, and IAXmodem will be a Modem on Hylafax, and a simple
extension on you *.

It works great for me, and there are more users using this architecture, you
can setup as much IAXModem as your servers can handle, so it's very
scalable.

Best regards,
Marco Mouta


On 1/22/07, Ardjan Zwartjes <A.Zwartjes@telecats.nl>
wrote:>
>  Dear list,
>
> The company I'm working for is trying to use app_rxfax to receive faxes
on
> an Asterisk machine. Our initial tests looked very promising, but
> unfortunately we've encountered some problems. We've been trying to
solve
> these problems for quite some time now, but we're running out of
options. So
> I really hope that somebody can give some help here.
> Basically our set-up is this: We have an Asterisk server (version 1.2.7)
with
> an ISDN trunk (Sangoma A104D), we've configured asterisk to run rxfax
on a
> specified extension. Originally we started out with spandsp 0.0.2pre26 and
> the original app_rxfax for spandsp 0.0.2. Some of the faxes were coming in
> perfectly, but soon we noticed that quite often there were substantial
> pieces of the fax missing in the resulting tif file.
> We've tried the following to solve these problems:
>
> - We've checked the timing settings for the ISDN trunk, these seem to
be
> ok.
> - We've tried several versions of libtiff (currently we are using
3.7.2).
> - We've tried using 0.0.3 versions of spandsp (since we're using
asterisk
> 1.2.7 we had to modify app_rxfax.c to work).
> - We've created a custom dialplan application to disable the echo
> cancellation on the isdn channel on which the fax is received.
> - We've tried various settings for t30_set_supported_compressions,
> t30_set_supported_image_sizes, t30_set_supported_modems and
> t30_set_supported_resolutions (I must confes that I didn't really know
which
> settings to use here, but we have tried a lot of them).
> - We've tried several fax machines to send the faxes, ranging from
simple
> fax-modems to large dedicated fax machines.
>
> But still a lot of faxes give problems, either the tif is missing large
> portions, or the fax isn't received at all. At the bottom of this mail
are
> 2 examples of the logging when it goes wrong. I really hope that somebody
can
> give a few pointers. Thanks in advance,
>
> Kind regards,
> Ardjan Zwartjes,
> Telecats
>
> ======= Example 1 ========================>
> Jan 19 14:49:14 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 19 14:49:14 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
> Jan 19 14:49:17 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
> Jan 19 14:49:17 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 19 14:49:19 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
> Jan 19 14:49:19 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 19 14:49:20 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
> V.21 to V.29 (-22.18dBm0)
> Jan 19 14:49:21 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 19 14:49:21 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
> Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
> Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 19 14:49:23 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
> V.21 to V.29 (-17.84dBm0)
> Jan 19 14:49:38 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
> Jan 19 14:49:38 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 19 14:49:39 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 19 14:49:39 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
> Jan 19 14:49:41 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 8
> Jan 19 14:49:41 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 19 14:49:42 DEBUG[24218] app_rxfax.c: FLOW FAX Switching from V.29 +
> V.21 to V.29 (-19.13dBm0)
> Jan 19 14:49:48 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 4
> Jan 19 14:49:48 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c:
>
=============================================================================>
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Pages transferred:  1
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image size:         1728 x 1192
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image resolution    8037 x 7700
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Transfer Rate:      9600
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Bad rows            0
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Longest bad row run 0
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Compression type    3
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: Image size (bytes)  0
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c:
>
=============================================================================>
Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 19 14:49:49 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 4
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 1
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c:
>
=============================================================================>
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Fax successfully received.
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Remote station id:
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Local station id:  "Test
Fax"
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Pages transferred: 1
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Image resolution:  8037 x 7700
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: Transfer Rate:     9600
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c:
>
=============================================================================>
Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set rx type 13
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX FAX exchange complete
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX Set tx type 13
> Jan 19 14:49:51 DEBUG[24218] app_rxfax.c: FLOW FAX FAX exchange complete
> Jan 19 14:49:53 DEBUG[24218] app_rxfax.c: Got hangup
> =========Example 2=================> Jan 18 09:56:12 VERBOSE[4185]
logger.c:     -- Executing RxFAX("Zap/31-1",
> "/tmp/1169110572.239.tif|debug") in new stack
> Jan 18 09:56:15 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 18 09:56:15 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 4
> Jan 18 09:56:17 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 4
> Jan 18 09:56:17 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 18 09:56:19 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 8
> Jan 18 09:56:19 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 0
> Jan 18 09:56:26 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 18 09:56:26 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 4
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 0
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 1
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c:
>
=============================================================================>
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: Fax receive not successful -
> result (31) Carrier lost during fax receive.
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c:
>
=============================================================================>
Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set rx type 13
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX FAX exchange complete
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX Set tx type 13
> Jan 18 09:56:27 DEBUG[4185] app_rxfax.c: FLOW FAX FAX exchange complete
> Jan 18 09:56:39 DEBUG[4185] app_rxfax.c: Got hangup
>
>
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Ardjan Zwartjes

2007-Jan-23 01:22 UTC

head link

[asterisk-users] Problems with rxfax

> Just out of curiosity.  Would you mind sharing that app_rxfax.c filethat you modified to work with SpanDSP 0.0.3?

I wouldn't mind, I've attached the sources of both rx- and txfax here, I
hope you can use them. 

About IAXmodem with hylafax, we've also tried that but we ran into the
same problems, a lot of the received faxes were missing large parts. We
chose to continue with app_rxfax since it is easier to configure and
easier to hack ;) and it doesn't add an extra VOIP channel to the chain.
Since both IAXmodem and app_rxfax use spandsp we figured that we do
something wrong in the way we use spandsp, but we have no idea what that
might be or how we can check this. I hope that somebody has some
additional information?

Thanks in advance,
Ardjan Zwartjes,
Telecats.

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