[Asterisk-Users] SoftFAX/spandsp

[Alex Zarubin]

Hi,

With the latest release available (spandsp-0.0.1f) we still cannot receive
faxes from Dialogic. There are no problems with several fax machines we've
tried and
it works fine with J2, so it shouldn't be slipping...

    -- Executing RxFAX("Zap/26-1",
"/usr/tmp/nativefax-from-8772308094-1079985146.tif") in new stack
Changed from phase 0 to 1
Slow carrier up
[03/22/04 13:52:26.985] DEBUG[507930]: File chan_zap.c, Line 3332
(zt_exception): Exception on 41, channel 26
[03/22/04 13:52:26.985] DEBUG[507930]: File chan_zap.c, Line 2753
(zt_handle_event): Got event No event(0) on channel 26 (index 0)
[03/22/04 13:52:26.985] DEBUG[507930]: File chan_zap.c, Line 3234
(zt_handle_event): Dunno what to do with event 0 on channel 26
Slow carrier down
Slow carrier up
Slow carrier down
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 4e 49 42 55 52 41 5a 20 58 45 4c 41 20 20 20 20 20 20 20 20
TSI without final frame tag
Remote fax gave TSI as: "ALEX ZARUBIN"
<<< DCS: 83 00 c6 70
DCS with final frame tag
In state 9
DCS:
Can receive fax
Selected data signalling rate: V.29, 9600bps
R8x7.7lines/mm and/or 200x200pels/25.4mm OK
2D coding OK
Scan line length: 215mm
Recording length: A4 (297mm)
Minimum scan line time: 0ms
Get at 9600
Changed from phase 3 to 5
Fast carrier up
Fast carrier down
0 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Coarse carrier frequency 1699.92 (56)
Training failed (only 120 1's)
Fast carrier training failed
Fast carrier down
0 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Coarse carrier frequency 1700.14 (4834)
Fast carrier down
0 bad bits in trainability test
>>> FTT: 44
0 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Coarse carrier frequency 1699.87 (56)
Fast carrier trained
Fast carrier down
27 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Coarse carrier frequency 1700.01 (4848)
Fast carrier down
27 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Coarse carrier frequency 1699.69 (56)
Training failed (only 114 1's)
Fast carrier training failed
Fast carrier down
27 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Coarse carrier frequency 1699.84 (2904)
Fast carrier down
27 bad bits in trainability test
>>> FTT: 44
Fast carrier up
Fast carrier down
27 bad bits in trainability test
>>> FTT: 44
^M    -- Channel 2, span 2 got hangup
[03/22/04 13:52:57.848] DEBUG[507930]: File app_rxfax.c, Line 237
(rxfax_exec): Got hangup
[03/22/04 13:52:57.848] DEBUG[507930]: File pbx.c, Line 1744 (ast_pbx_run):
Extension 8663222818, priority 1 returned normally even though call was hung
up

Thank you.

Alex Zarubin
Webley Systems


-----Original Message-----
From: Steve Underwood [mailto:steveu at coppice.org]
Sent: Monday, March 22, 2004 8:14 AM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] SoftFAX/spandsp


Hi all,

If you have had trouble with multiple concurrent channels running 
app_rxfax or ap_txfax, where was a silly bug. Updated versions are 
available at ftp://ftp.opencall.org/pub/spandsp

The latest spandsp-0.0.1f seems to working for quite a lot of people. I 
guess there will still be plenty more compatibility issues to deal with, 
though. If you try this software and find reliability problems try 
checking for frame slips. A single frame slip in the audio stream will 
kill a fax transfer. This is true for any fax modem, and is not a 
spandsp issue.

Regards,
Steve

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