[Asterisk-Users] scandsp, voicetronix and rxfx

[Steve Underwood]

asterisk at capepaterson.com wrote:

>Hi all,
>
>Trying to get fax reception going using a voicetronix openline4 card,
>however, there are two issues (as far as I can see)
>
>(1) Currently the voicetronix world (cards, firmware, drivers, channel
>prog etc.) does not do fax tone detection.  I have spoken to the
>voicetronix guys , understand what has to happen there and may do some
>hacking if I can resolve the second issue.  Meanwhile, I guess I can do
>some sort of manual (or pseudo manual) transfer to a spandsp extension.
>
>(2) More worringly, when I do force a transfer to rxfax, it does not
>appear to train with the fax machine that I am using (samsung sf-330). 
>Here is a snippet of log:
>
>    -- Executing SetVar("vpb/1-1", "FAXFILE=/tmp/1086048253.8.tif") in new
>stack
>    -- Executing RxFAX("vpb/1-1", "/tmp/1086048253.8.tif") in new stack
>Changed from phase 0 to 1
>Slow carrier up
>Slow carrier down
>Slow carrier up
>Slow carrier down
>Slow carrier up
>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
>T4 timeout in state 9
>Changed from phase 3 to 4
>Sending ident
>  
>
>>>>CSI: 40 08 13 7c 58 f0 7a 15 af 14 c6 ef 10 e7 61 0b 44 1b 20 fb 59
>>>>        
>>>>
>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
>>>>        
>>>>
>T2 timeout
>Start receiving document
>...
>
>and this repeats ad nauseum until the fax machine gives up.
>
>Any ideas what the issue might be anyone?  Could this be voicetronix
>card-related?
>
>Thanks in advance.
>
>Greg.
>  
>
Looks like the audio does not reach rxfax

Regards,
Steve