Re: some faxes not detected, but received on an "old" fax machine

Thanks, Lee,

On 27/08/15 16:30, Lee Howard wrote:
> On 08/27/2015 06:17 AM, Laurent Lesage wrote:
>> The problem is that some caller can not send faxes. Hera attached, a 
>> failed transmission.
> The modem answers the call as instructed, sends NSF/CSI/DIS signals 
> and then listens for the response from the sender. However, the modem 
> never hears the response from the sender.  And, after a few repeats 
> HylaFAX gives up.
>
> The following are possibilities:
>
> 1) The modem really can't hear the response from the sender due to 
> line audio quality problems.  Maybe the fax machine is able to cope 
> with the audio quality while the USR modem cannot.
>
> 2) Maybe the sender is not in-sync with us properly and somehow that 
> is tripping-up our ability to detect their signaling.   Maybe try 
> updating HylaFAX to something more-recent than 4.4.4?
I updated to 6.0.6 without improvement.
>
> 3) Maybe the sender does not like our NSF/CSI/DIS signals, and so it 
> disconnects.
>
Is there a way to see it and improve this?
>> another question : is there a way to receive notification when such a 
>> call appear? At this time, "FaxMaster" is not notified for those 
>> failed attempts.
>
> To HylaFAX it looks like a non-fax call came in, and so HylaFAX 
> doesn't invoke faxrcvd (which implies a fax was received).  To detect 
> non-fax calls you can look for CALL records in 
> /var/spool/hylafax/etc/xferfaxlog that do not have a corresponding 
> RECV record.
Yes, I can script that if necessary. I just asked in case there was some 
parameter to be notified by the hylafax system, as FaxMAster is for fax 
events.

Thanks

Laurent


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