Re: [hylafax-users] No response to MPS or EOP repeated 3 tries

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2003.10.10 04:49 Priya wrote:

> It may be necessary to fake an MCF frame.

Huh?!  "Faking" any remote response signal is totally inappropriate.  
"Faking" an MCF frame would not provide us confirmation that the remote 
received the image data properly.

> I suspect, though, that most serious developers are using Class 2 or
> 2.0
> modems.

I consider myself a serious developer :-) and I use Class 1 most of the 
time.  There's not much for us to develop in Class 2, anyway.

No response to MPS/EOP in Class 1 these days generally means that the 
remote fax machine is having trouble printing or decoding the image 
data.  Sometime it just means we need to wait longer for the response, 
but generally it means the remote didn't actually complete the receive.

> Oct 10 17:03:30.23: [19887]: REMOTE CSI "91 11 24365979"
> Oct 10 17:03:30.23: [19887]: <-- [9:AT+FRH=3\r]
> Oct 10 17:03:30.25: [19887]: --> [7:CONNECT]
> Oct 10 17:03:30.49: [19887]: --> HDLC<9:FF C8 01 00 77 15 22 17 5D>
> Oct 10 17:03:30.50: [19887]: --> [2:OK]
> Oct 10 17:03:30.50: [19887]: REMOTE best rate 14400 bit/s
> Oct 10 17:03:30.50: [19887]: REMOTE max page width 1728 pixels in 215
> mm
> Oct 10 17:03:30.50: [19887]: REMOTE max unlimited page length
> Oct 10 17:03:30.50: [19887]: REMOTE best vres 7.7 line/mm
> Oct 10 17:03:30.50: [19887]: REMOTE best format 2-D MMR
> Oct 10 17:03:30.50: [19887]: REMOTE supports T.30 Annex A, ECM
> Oct 10 17:03:30.50: [19887]: REMOTE best 10 ms/scanline

The remote supports ECM.  If you are seriously interested in getting 
the fax sent properly, and if you are seriously interested in 
benefiting HylaFAX, I suggest you check out HylaFAX CVS which now 
supports ECM and MMR.  Use of ECM gives a VERY clear idea of what's 
going on in the data-portion of the transmission.

Lee.

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