Re: [hylafax-users] Issue receiving + XMPP notifier

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Walter Stanish wrote:
> On receiving, errors appeared like "MODEM TIMEOUT: waiting for
> v.21 carrier", "RECV: reject TCF (too many non-zero, max 10%)",
> "TRAINING failed" (repeats twice, finally succeds third time down
> to 7200bit), then "MODEM command error", "FCS error",
> "MODEM TIMEOUT", etc. with a final death... "RECV FAX: Failed
> to properly detect high-speed data carrier, {E112}"
>   

I would like to see one of these complete session logs.

> The info file that fixed the problem:
> --------------------------------------------------------------
> supportsVres:1
> supports2DEncoding:no
> supportsMMR:no
> hasV34Trouble:yes
> hasV17Trouble:yes
> senderHasV17Trouble:yes
> senderSkipsV29:yes
> supportsPostscript:no
> supprotsBatching:no
> calledBefore:yes
> maxPageWdith:1728
> maxPageLength:65535
> maxSignallingRate:"9600"
> minScanlineTime:"20ms"
> --------------------------------------------------------------
>
>   

The only features there that are applicable for receiving faxes are 
senderHasV17Trouble and senderSkipsV29.  Using these two in combination 
(both yes) causes faxgetty to present the sender with a DIS signal that 
omits V.17 support (thus 9600 bps maximum).

Furthermore, those features only work if you have associated a 
CallIDPattern with "calling-number" using CallIDType.  Is this what 
you've done?

> Has an auto-downgrade feature for failed receives
> been discussed before?  Maybe some kind of
> progressive 'scale-up' of speed and features could
> be attempted over time until errors are encountered,
> then the other side could be set back to the last
> 'known good' options.
>   

FaxGetty attempts to identify when a sender has trouble with V.17 and 
also identifies when it skips over V.29.  If it's not doing this in your 
case then I need to take a look at your session logs to know how the 
detection routines could work better.

Thanks,

Lee.


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