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Hi Steve,<br>
<br>
My fax log contains the following (as you can see in my previous
mail):<br>
Transfer Rate: 14400
<br>
Thats why I thought that the other side tried to send its fax with
this transfer rate even though I disabled the V.17 modem.<br>
<br>
It cannot be a NAT problem, because I can receive the call, the
connection is only dropped during the fax session. All the voice
calls are OK, and my FreeSwitch is directly connected to the
Internet.<br>
<br>
I try to give y'all more details, hoping that somebody might
experienced the same issue.<br>
So the other part seems to successfully receive the ident (default:
"spandsp fax ident"). After that my side sends the DIS, but the
other side either doesn't get it or cannot interpret it, or the
answer (DCS) is lost somewhere.<br>
There are a few fax machines from which I can successfully receive
faxes, but there are lots of machines from which I cannot receive
anything.<br>
<br>
My DIS is the following:<br>
<br>
<font face="Courier New, Courier, monospace">FLOW T.30 DIS:<br>
FLOW T.30 .... ...0= Store and forward Internet fax (T.37): Not
set<br>
FLOW T.30 .... .0..= Real-time Internet fax (T.38): Not set<br>
FLOW T.30 .... 0...= 3G mobile network: Not set<br>
FLOW T.30 ..0. ....= V.8 capabilities: Not set<br>
FLOW T.30 .0.. ....= Preferred octets: 256 octets<br>
FLOW T.30 .... ...0= Ready to transmit a fax document (polling):
Not set<br>
FLOW T.30 .... ..1.= Can receive fax: Set<br>
FLOW T.30 ..00 11..= Supported data signalling rates: V.27 ter
and V.29<br>
FLOW T.30 .1.. ....= R8x7.7lines/mm and/or 200x200pels/25.4mm:
Set<br>
FLOW T.30 1... ....= 2-D coding: Set<br>
FLOW T.30 .... ..10= Recording width: 215mm +- 1%, 255mm +- 1%
and 303mm +- 1%<br>
FLOW T.30 .... 10..= Recording length: Unlimited<br>
FLOW T.30 .111 ....= Receiver's minimum scan line time: 0ms at
3.85 l/mm; T7.7 = T3.85<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ..0.= Compressed/uncompressed mode: Compressed<br>
FLOW T.30 .... .0..= Error correction mode (ECM): Non-ECM<br>
FLOW T.30 .0.. ....= T.6 coding: Not set<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ...0= "Field not valid" supported: Not set<br>
FLOW T.30 .... ..0.= Multiple selective polling: Not set<br>
FLOW T.30 .... .0..= Polled sub-address: Not set<br>
FLOW T.30 .... 0...= T.43 coding: Not set<br>
FLOW T.30 ...0 ....= Plane interleave: Not set<br>
FLOW T.30 ..0. ....= Voice coding with 32kbit/s ADPCM (Rec.
G.726): Not set<br>
FLOW T.30 .0.. ....= Reserved for the use of extended voice
coding set: Not set<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ...1= R8x15.4lines/mm: Set<br>
FLOW T.30 .... ..0.= 300x300pels/25.4mm: Not set<br>
FLOW T.30 .... .1..= R16x15.4lines/mm and/or 400x400pels/25.4mm:
Set<br>
FLOW T.30 .... 1...= Inch-based resolution preferred: Set<br>
FLOW T.30 ...1 ....= Metric-based resolution preferred: Set<br>
FLOW T.30 ..0. ....= Minimum scan line time for higher
resolutions: T15.4 = T7.7<br>
FLOW T.30 .0.. ....= Selective polling: Not set<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ...0= Sub-addressing: Not set<br>
FLOW T.30 .... ..0.= Password: Not set<br>
FLOW T.30 .... .0..= Ready to transmit a data file (polling):
Not set<br>
FLOW T.30 ...0 ....= Binary file transfer (BFT): Not set<br>
FLOW T.30 ..0. ....= Document transfer mode (DTM): Not set<br>
FLOW T.30 .0.. ....= Electronic data interchange (EDI): Not set<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ...0= Basic transfer mode (BTM): Not set<br>
FLOW T.30 .... .0..= Ready to transfer a character or mixed mode
document (polling): Not set<br>
FLOW T.30 .... 0...= Character mode: Not set<br>
FLOW T.30 ..0. ....= Mixed mode (Annex E/T.4): Not set<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ...0= Processable mode 26 (Rec. T.505): Not set<br>
FLOW T.30 .... ..0.= Digital network capability: Not set<br>
FLOW T.30 .... .0..= Duplex capability: Half only<br>
FLOW T.30 .... 0...= JPEG coding: Not set<br>
FLOW T.30 ...0 ....= Full colour mode: Not set<br>
FLOW T.30 .0.. ....= 12bits/pel component: Not set<br>
FLOW T.30 1... ....= Extension indicator: Set<br>
FLOW T.30 .... ...0= No subsampling (1:1:1): Not set<br>
FLOW T.30 .... ..0.= Custom illuminant: Not set<br>
FLOW T.30 .... .0..= Custom gamut range: Not set<br>
FLOW T.30 .... 1...= North American Letter (215.9mm x 279.4mm):
Set<br>
FLOW T.30 ...1 ....= North American Legal (215.9mm x 355.6mm):
Set<br>
FLOW T.30 ..0. ....= Single-progression sequential coding (Rec.
T.85) basic: Not set<br>
FLOW T.30 .0.. ....= Single-progression sequential coding (Rec.
T.85) optional L0: Not set<br>
FLOW T.30 0... ....= Extension indicator: Not set<br>
FLOW T.30 Tx: DIS with final frame tag</font><br>
<br>
I even thought that the other side cannot interpret my DIS message,
so I have to simplify it so it only contains the forst three bytes
without the extensions. But I don't know whether or not it is
possible in FreeSwitch without modifying the source code.<br>
<br>
Thank you!<br>
<br>
Cheers,<br>
tmarlok<br>
<br>
<div class="moz-cite-prefix">On 2014-09-01 14:44, Steve Underwood
wrote:<br>
</div>
<blockquote cite="mid:54046A36.6040603@coppice.org" type="cite">
<pre wrap="">Hi Tamas,
You have inspected the DIS and DCS messages, so you know the far end is
not trying to send at 14,400 bps. It is, in fact, not communicating at
all. You also know that you can disable V.17 successfully, as you have
seen that the disable-v17 entry in the configuration data means the DIS
message from FS no longer includes V.17. So, up to now you have said
nothing useful which might get you a helpful reply, but you have said
things that waste people's time.
My guess is you have a NAT problem, or something similar, which is
completely blocking communication between the two FAX entities.
Regards,
Steve
On 09/01/2014 02:52 PM, Marlok Tamas wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Thanks for the answer.
I forgot to mention, but I already disabled that.
My spandsp.conf (and fax.conf also) looks like this:
<fax-settings>
<param name="use-ecm" value="false"/>
<param name="verbose" value="true"/>
<param name="disable-v17" value="true"/>
<param name="ident" value=" "/>
<param name="header" value=" "/>
<param name="enable-t38" value="false"/>
<param name="enable-t38-request" value="false"/>
<param name="spool-dir" value="/tmp"/>
<param name="file-prefix" value="faxrx"/>
</fax-settings>
But still. I cannot receive fax from certain devices and I have this
error message, which indicates that the other side is trying to send
the fax with 14400 transfer rate.
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:512
==============================================================================
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:524 Fax processing not successful - result
(48) Disconnected after permitted retries.
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:529 Remote station id:
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:530 Local station id: <stationid>
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:531 Pages transferred: 0
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:533 Total fax pages: 0
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:534 Image resolution: 0x0
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:535 Transfer Rate: 14400
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:537 ECM status off
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:538 remote country:
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:539 remote vendor:
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:540 remote model:
9201aae0-771e-4ccf-a5c2-60fdbd3d6f6b 2014-08-28 18:35:39.627132
[DEBUG] mod_spandsp_fax.c:542
==============================================================================
The important part of the DIS (from my side) looks like this:
..00 11..= Supported data signalling rates: V.27 ter and V.29
No V.17. But I do not get an answer (DCS) to my DIS. So the fax
processing dies after three retries.
On 2014-08-29 17:24, Brian West wrote:
</pre>
<blockquote type="cite">
<pre wrap="">
<paramname="disable-v17"value="true"/>
in fax.conf.xml
On Fri, Aug 29, 2014 at 9:02 AM, Marlok Tamas
<<a class="moz-txt-link-abbreviated" href="mailto:tamas.marlok@rackserver.hu">tamas.marlok@rackserver.hu</a> <a class="moz-txt-link-rfc2396E" href="mailto:tamas.marlok@rackserver.hu"><mailto:tamas.marlok@rackserver.hu></a>> wrote:
Hi!
I found this thread:
<a class="moz-txt-link-freetext" href="http://lists.freeswitch.org/pipermail/freeswitch-users/2013-March/094032.html">http://lists.freeswitch.org/pipermail/freeswitch-users/2013-March/094032.html</a>
and I have the same problem (all faxes with transfer rate: 14400
are dropped)
It seems that nobody ha an answer back then for the question (is
there any way of forcing freeswitch to use transfer rate: 9600)
The result:
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:512
==============================================================================
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:524 Fax
processing not successful - result (48) Disconnected after
permitted retries.
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:529 Remote
station id:
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:530 Local
station id: <local_number>
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:531 Pages
transferred: 0
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:533 Total
fax pages: 0
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:534 Image
resolution: 0x0
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:535 Transfer
Rate: 14400
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:537 ECM
status off
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:538 remote
country:
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:539 remote
vendor:
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:540 remote
model:
2014-08-29 15:21:39.187130 [DEBUG] mod_spandsp_fax.c:542
==============================================================================
Thanks in advance!
Cheers,
tmarlok
</pre>
</blockquote>
</blockquote>
<pre wrap="">
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</pre>
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