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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 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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