similar to: Problem with fax tone (CNG) from TxFax and busy detect

I've seen other posts about this problem, but I haven't found a solution. I'm dumping eight call files into the "outgoing" directory at one time. Three of the calls are successful while the other five are lost. Here is the call file: Channel: Zap/g2/3036701917 MaxRetries: 1000 RetryTime: 60 WaitTime: 45 Application: TxFAX Data: <filename>.tiff|caller Note: All

I'm having an intermittent problem with fax transmissions, something I call the streaking mascara syndrome. TxFax will be part way through a transmission when something fails--on the fax printer, part of the page will have correctly printed, but the rest of the page is "streaked" to the bottom. I have several successful multi-page transmissions interspersed with streaked

Hi Steve and all, 1. Faxing from asterisk back to the same asterisk (from one Zap channel to another) doesn't work for us. Txfax called with the 'caller' parameter issues CED, while the receiving side needs CNG in order to switch to fax extension with rxfax. 2. This is probably the reason why J2 and our UC don't recognize incoming fax. Thank you. Alex Zarubin Webley Systems

I'm debugging a TxFax problem whereby the fax transmission fails. I suspect interrupt latency--some interrupt routine is holding its interrupt too long. I have all unnecessary services switched off and X is not running when I perform these tests. Some transmission are successful while others fail at random points. I've noticed that after I boot Linux, load zaptel, wcfxo, and wcfxs,

Hi everyone ! I have some aditional info on problem with TXFax and sending multi-page TIFFs. I have made 6 different multi-page TIFFs (Group3 1D with fillbits EOL aligned - 3 pages one TIFF in lowres and one in hires, Group3 2D -3 pages againg in both resolutions , and Group 4 - 3pages in both resolutions), and then tried to send them to Panasonic KX-F1100, Panasonic KX-F500 and SpanDSP

Hi, We have no problems sending to HP and Panasonic fax machines in the office. We do have problems when we try to send faxes to services supporting fax, i.e. J2 or our UC platform. The receiving side doesn't recognize fax. To send a fax we drop into /var/spool/asterisk/outgoing: Channel: Zap/g1/<fax number> MaxRetries: 0 WaitTime: 20 Context: webley_txfax Extension: txfax_ext

Nobody seems to use txfax or does nobody have any problems with it? I have sent mails to most lists and get no reply. I cannot get a fax to go through with txfax. I use a call file as a test and all I get on the receiving fax is a bunch of vertical lines. my call file is: Channel:Srx/gout/4658158 MaxRetries: 0 WaitTime: 20 Application:txfax Data:/etc/asterisk/testfax.tif|caller|debug FYI

Hi all, supposing to have speex working at 3.95, when VAD/CNG is employed, which is the size of those "silence" samples respect to voice samples? I am wondering if it could be possible to lower even the transmission of VAD/CNG samples by specifying "outbound" in the communication channel only 1 bit instead of sending the whole VAD/CNG packet. I am doing the same for AMR

Hi List, i've set up a cisco 7912 for my asterisk box. I've had problems with VAD and CNG. After googling a bit, i've found an article about asterisk not supporting these two protocols, therefore it's better to turn them off. Since then i did not found answer to my two questions, maybe somebody here could help me: a) am i even able to turn off vad/cng on cisco 7912? SIP

Hi Gang, I'm trying to make an application to upload a tiff via a web interface, slap a cover page onto it, merge the two into a new tiff and send it out via txfax. I'm able to get it out to a fax machine using this sequence: /usr/bin/tiff2pdf /tmp/faxout/1229978819_filea.tif -o /tmp/faxout/1229978819_filea.pdf /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite

Hi, I noticed a strange behaviour: Faxing using spandsp (TxFax) from my asterisk box to my old, common fax machine at home works fine. Faxing from the same box to my office pc-fax (Hylafax) also worke fine. Receveiving faxes on my asterisk box using spandsp (RxFax) also works fine. It is a PSTN number connected to the digium card of that asterisk box. Then I faxed from my asterisk box (TxFax)

Hello, I have a question regarding incoming fax to local file (on the Asterisk server). While the fax is received properly (I have the tiff file generated as expected) I get the warning 'FAX CNG detected but no fax extension' on the consol. If the fax is received ok then what 'fax extension' does it expect and what should I do there? My Setup: Sender -> Public PSTN ->

Hello ! I 'm trying T.38 faxig with spandsp using rxfax/txfax as fax terminal. As another endpoint I 'm using Grandstream HT 486 ATA and a fax machine. Has anybody success with the HT486 as T.38 terminal ? ATA as originator: I managed only onetimes a successfull T.38 fax session. The other times the HT486 did not initiate a re-invite with T.38 parameters. Or shall the Terminator

the attached log with verbose=6 and debug=6 refers. we've got a sangoma A104 (no hwec) with PRI ports 1 & 3 loopbacked to each other. we're trying to have txfax send out on one of those pri ports with rxfax listening on the other side, hence having asterisk send a fax to itself. we however have bad, and i mean really bad (<10%) success rates. we're currently using asterisk

Thanks for the information Lee ! Still, something is still strange to me, since this two Panasonic Fax machines are receiving at least 20 multi-paged faxes a day (they are in same office as both Asterisk boxes, and me :) ). Beside that, POTS lines in those two faxes are from same PSTN switch as line in X100P in one of Asterisk boxes, and the ISDN PRI lines in other Asterisk box is from same PSTN

Hello, I have installed SpanDSP and the apps txfax an rxfax. Unfortunately I am having problems sending faxes. I only get cancelled transfers. I am trying to send a fax to a ISDN card connected to a zap channel. I am using following call file: ------------------------------- Channel: ZAP/g1/25 MaxRetries: 0 WaitTime: 20 Application: txfax Data: /tmp/lVD3wy.tiff|caller Asterisk shows:

> AFAIK the current recommendation is to use HylaFax with something called iaxmodem. After having been through a lot of problems with RxFax and TxFax I completely agree with this statement. Allthough the initial configuration is a bit complicated, once you have this running you'll get far better reliability. Kind regards, Ardjan Zwartjes.

Hi list, Just installed spandsp. In my limiting testing, I have an issue on a Philips fax machine (HFC21) directly connected to my * server through TDM400, reception with rxfax works fine, but txfax always fails. Below is a transcript of failed transmit. This is with asterisk-1.0.3 (with native moh patch but I don't think it is the source of the problem). I already tried libtiff 3.5.7,

Hi guys, I installed asterisk 1.4.17 and mISDN 1.1.7 with AGX addons to test the faxs. If I receive i do not have any problem, but i'm not able to send put any fax, i get always the same error: txfax_exec: transmission done with ast_read(chan) == NULL Anyone has txfax working with asterisk 1.4? I try to download app_rxfax.c and app_txfax.c with the asterisk.patch file but without success.

Hi folks, I was hoping that someone might be able to help clarify some confusion I have on DAHDI Fax detection after spending some time searching. My understanding is this: 1.) Echo cancellation is automatically disabled upon recognition of a CNG tone, regardless of the faxdetect setting. This can only be disabled at compile time. 2.) faxdetect=incoming will, upon detection of a CNG tone,