Sorry to bore you more with the clock issue, but have you check /proc/zaptel/<span> to make sure it's not missing interrupts?
There's also an option to record the audio for the fax, you could listen to that vs a recorded file that will receive correctly on a fax machine and see whether there is an obvious difference? (Good luck, that'll be really scraping the barrel!!) Does it matter where you're faxing from? (I'm wondering whether there's an issue with a specific machine? (You can use http://www.tpc.int to send test faxes, you'll get some extra info if a fax fails as to why in the transmission report). Can you successfully send faxes out from your system, what do they look like at the remote end? Steve -----Original Message----- From: Stephen J. Wilcox [mailto:[EMAIL PROTECTED] Sent: 13 July 2004 18:12 To: [EMAIL PROTECTED] Subject: [Asterisk-Users] fax still fails, ideas sought! Re: rxfax/spandsp fails to decode Okay having taken in some suggestions and googled this topic to death I'm still stuck - anyone got any ideas? To recap, the faxes are coming in via a digium E1 card but failing to train properly or if they manage it sending a garbled and very truncated fax. A number of folks have suggested clock sync issues.. my zaptel.conf is set to use the PRI as primary clock, i have no evidence of issues altho dont know how to check (other than the call quality is fine, no clicks, no pri down/ups). What can i try? Steve On Mon, 12 Jul 2004, Stephen J. Wilcox wrote: > Hi, > I just sent this to Steve Underwood, but then found a bunch of posts on the > mailing list about similar issues.. does anyone have the fix? > > I'm running asterisk CVS-HEAD-06/28/04-18:13:13, spandsp 0.0.1k, libtif 3.5.7 > > one thing i just noticed is that calls come in with format '72' which is > G711A-law or LinearPCM.. it uses PCM for the call, i assume this is ok > > the results of RxFAX vary, it sometimes saves the file in which case i get > errors: > Fax3Decode2D: Warning, (FakeInput): Line length mismatch at scanline 0 (got > 2383, expected 1728). > Fax3Decode2D: (FakeInput): Bad code word at scanline 1 (x 137). > > and the resulting tif looks to be only a few rows long > > or more commonly it just fails entirely.. i paste the output below so you can > see. is there anything obvious i'm doign wrong here? > > TIA! Steve. > > -- Executing RxFAX("Zap/1-1", > "/var/spool/asterisk/faxes/20040712-183339.tif") in new stack > Changed from phase 0 to 1 > Start receiving document > Changed from phase 1 to 4 > Sending ident > >>> CSI: 40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > DIS: > Preferred octets: 256 > Can receive fax > Supported data signalling rates: V.27ter and V.29 > R8x7.7lines/mm and/or 200x200pels/25.4mm OK > 2D coding OK > Scan line length: 215mm > Recording length: A4 (297mm) > Receiver's minimum scan line time: 0ms at 3.85 l/mm: T7.7 = T3.85 > R8x15.4lines/mm OK > Minimum scan line time for higher resolutions: T15.4 = T7.7 > >>> DIS: 80 00 ce f0 80 80 01 > HDLC underflow in state 9 > Changed from phase 4 to 3 > Slow carrier up > <<< TSI: 43 31 37 31 31 36 35 34 35 34 38 30 20 20 20 20 20 20 20 20 20 > TSI without final frame tag > Remote fax gave TSI as: "xxxx" > <<< DCS: 83 00 86 90 00 > DCS with final frame tag > In state 9 > DCS: > Can receive fax > Selected data signalling rate: V.29, 9600bps > 2D coding OK > Scan line length: 215mm > Recording length: A4 (297mm) > Minimum scan line time: 5ms > Get at 9600 > Changed from phase 3 to 5 > Fast carrier up > Fast carrier down > Fast carrier up > Coarse carrier frequency 1699.90 (64) > Training error 56.874846 > Training succeeded (constellation mismatch 44.212022) > Fast carrier trained > Fast carrier down > Trainability test failed - longest run of zeros was 14 > >>> FTT: 44 > Fast carrier up > Training failed (sequence failed) > Fast carrier training failed > Fast carrier down > Fast carrier up > Coarse carrier frequency 1700.33 (64) > Training error 51.989152 > Training succeeded (constellation mismatch 37.988826) > Fast carrier trained > Fast carrier down > Trainability test failed - longest run of zeros was 15 > >>> FTT: 44 > Fast carrier up > Training failed (sequence failed) > Fast carrier training failed > Fast carrier down > Fast carrier up > Coarse carrier frequency 1700.32 (64) > Training error 60.898646 > Training succeeded (constellation mismatch 46.138793) > Fast carrier trained > Fast carrier down > Trainability test failed - longest run of zeros was 17 > >>> FTT: 44 > Fast carrier up > Training failed (sequence failed) > Fast carrier training failed > Fast carrier down > Fast carrier up > Coarse carrier frequency 1795.61 (4) > Fast carrier down > Fast carrier up > Coarse carrier frequency 1789.60 (4) > Fast carrier down > -- Channel 0/1, span 1 got hangup > -- Hungup 'Zap/1-1' > > > > > > _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users The information contained in this email is intended for the personal and confidential use of the addressee only. 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