Hi Steve, My fax log contains the following (as you can see in my previous mail): Transfer Rate: 14400 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. 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. I try to give y'all more details, hoping that somebody might experienced the same issue. 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. 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. My DIS is the following: FLOW T.30 DIS: FLOW T.30 .... ...0= Store and forward Internet fax (T.37): Not set FLOW T.30 .... .0..= Real-time Internet fax (T.38): Not set FLOW T.30 .... 0...= 3G mobile network: Not set FLOW T.30 ..0. ....= V.8 capabilities: Not set FLOW T.30 .0.. ....= Preferred octets: 256 octets FLOW T.30 .... ...0= Ready to transmit a fax document (polling): Not set FLOW T.30 .... ..1.= Can receive fax: Set FLOW T.30 ..00 11..= Supported data signalling rates: V.27 ter and V.29 FLOW T.30 .1.. ....= R8x7.7lines/mm and/or 200x200pels/25.4mm: Set FLOW T.30 1... ....= 2-D coding: Set FLOW T.30 .... ..10= Recording width: 215mm +- 1%, 255mm +- 1% and 303mm +- 1% FLOW T.30 .... 10..= Recording length: Unlimited FLOW T.30 .111 ....= Receiver's minimum scan line time: 0ms at 3.85 l/mm; T7.7 = T3.85 FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ..0.= Compressed/uncompressed mode: Compressed FLOW T.30 .... .0..= Error correction mode (ECM): Non-ECM FLOW T.30 .0.. ....= T.6 coding: Not set FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ...0= "Field not valid" supported: Not set FLOW T.30 .... ..0.= Multiple selective polling: Not set FLOW T.30 .... .0..= Polled sub-address: Not set FLOW T.30 .... 0...= T.43 coding: Not set FLOW T.30 ...0 ....= Plane interleave: Not set FLOW T.30 ..0. ....= Voice coding with 32kbit/s ADPCM (Rec. G.726): Not set FLOW T.30 .0.. ....= Reserved for the use of extended voice coding set: Not set FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ...1= R8x15.4lines/mm: Set FLOW T.30 .... ..0.= 300x300pels/25.4mm: Not set FLOW T.30 .... .1..= R16x15.4lines/mm and/or 400x400pels/25.4mm: Set FLOW T.30 .... 1...= Inch-based resolution preferred: Set FLOW T.30 ...1 ....= Metric-based resolution preferred: Set FLOW T.30 ..0. ....= Minimum scan line time for higher resolutions: T15.4 = T7.7 FLOW T.30 .0.. ....= Selective polling: Not set FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ...0= Sub-addressing: Not set FLOW T.30 .... ..0.= Password: Not set FLOW T.30 .... .0..= Ready to transmit a data file (polling): Not set FLOW T.30 ...0 ....= Binary file transfer (BFT): Not set FLOW T.30 ..0. ....= Document transfer mode (DTM): Not set FLOW T.30 .0.. ....= Electronic data interchange (EDI): Not set FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ...0= Basic transfer mode (BTM): Not set FLOW T.30 .... .0..= Ready to transfer a character or mixed mode document (polling): Not set FLOW T.30 .... 0...= Character mode: Not set FLOW T.30 ..0. ....= Mixed mode (Annex E/T.4): Not set FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ...0= Processable mode 26 (Rec. T.505): Not set FLOW T.30 .... ..0.= Digital network capability: Not set FLOW T.30 .... .0..= Duplex capability: Half only FLOW T.30 .... 0...= JPEG coding: Not set FLOW T.30 ...0 ....= Full colour mode: Not set FLOW T.30 .0.. ....= 12bits/pel component: Not set FLOW T.30 1... ....= Extension indicator: Set FLOW T.30 .... ...0= No subsampling (1:1:1): Not set FLOW T.30 .... ..0.= Custom illuminant: Not set FLOW T.30 .... .0..= Custom gamut range: Not set FLOW T.30 .... 1...= North American Letter (215.9mm x 279.4mm): Set FLOW T.30 ...1 ....= North American Legal (215.9mm x 355.6mm): Set FLOW T.30 ..0. ....= Single-progression sequential coding (Rec. T.85) basic: Not set FLOW T.30 .0.. ....= Single-progression sequential coding (Rec. T.85) optional L0: Not set FLOW T.30 0... ....= Extension indicator: Not set FLOW T.30 Tx: DIS with final frame tag 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. Thank you! Cheers, tmarlok On 2014-09-01 14:44, Steve Underwood wrote:
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:
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:
<paramname="disable-v17"value="true"/>
in fax.conf.xml
On Fri, Aug 29, 2014 at 9:02 AM, Marlok Tamas <tamas.marlok@rackserver.hu <mailto:tamas.marlok@rackserver.hu>> wrote:
Hi!
I found this thread: http://lists.freeswitch.org/pipermail/freeswitch-users/2013-March/094032.htm... 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
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