Re: [hylafax-users] Fax received ok, but sender thinks it failed and resends

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Chris 'Xenon' Hanson wrote:
> > Dec 12 16:08:34.00: [16428]: <-- [9:AT+FTH=3\r]
> > Dec 12 16:08:35.07: [16428]: --> [7:CONNECT]
> > Dec 12 16:08:35.07: [16428]: <-- data [3]
> > Dec 12 16:08:35.07: [16428]: <-- data [2]
> > Dec 12 16:08:35.39: [16428]: --> [2:OK]
> >     

Here, when sending the CFR signal the modem behaves as it should.  
However...

> > Dec 12 16:08:55.72: [16428]: <-- [9:AT+FTH=3\r]
> > Dec 12 16:08:55.72: [16428]: --> [10:NO CARRIER]
> > Dec 12 16:08:55.72: [16428]: RECV send MCF (message confirmation)
> >     

Here, when trying to send the MCF signal, the modem confusingly responds 
with "NO CARRIER" which is not a permissible response to AT+FTH=3.

> > Dec 12 16:09:00.07: [16428]: <-- [9:AT+FTH=3\r]
> > Dec 12 16:09:00.07: [16428]: --> [10:NO CARRIER]
> > Dec 12 16:09:00.07: [16428]: RECV send MCF (message confirmation)
> >     

And again.

> > Dec 12 16:09:04.49: [16428]: <-- [9:AT+FTH=3\r]
> > Dec 12 16:09:04.49: [16428]: --> [10:NO CARRIER]
> > Dec 12 16:09:04.49: [16428]: RECV send MCF (message confirmation)
> >     

And again.

The NO CARRIER response comes awfully fast (immediately).  I suspect 
that the NO CARRIER is already in the buffer before the AT+FTH=3 is 
given.  However, I'm not seeing the requisite "CONNECT" response below, 
either.

So, something is wrong with the Class 1 behaviors of the modem.  Unless 
we learn how to work-around the matter there can be very little hope for 
reliable faxing with this modem.

Thanks,

Lee.


Unless we learn how to work-around this


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