Re: [hylafax-users] A Hint about Devolo Microlink Fun II and Failure to train remote modem

[Heino Backhaus <heino.backhaus@xxxxxx>]

Hi Lee,

> > Have you done the work to learn *which* of these several AT commands are
> > the ones that made the difference?
> >
> >    
well, now i did, the results are surpising simple:

All of these initstrings seems to be unnessassary the only parameter 
wich is realy needed is
DCE-DTE-Speed of 57600bps. if I change this to 19200bps i got the same 
problem again.
It`s a little strange to me that the problem occurs only by sending a 
fax to the HP OfficeJet. Sending it to an other
Hylafax Server works good with 19200.
In addition i tested 38400bps wich works fine too.

Lee, do you got an idea why the problem occurs at DCE-DTE-Speed of 
19200bps ?
I would understand this if it would occur at speeds faster than 19200bps.

I think the initstrings related with flowcontrol are still important. 
Because the traditional &K3 &K4 etc...
commands are not working with this modem.

Mathias, you`re using the USB-Version of this modem. This may be a 
completely different thing.
But anyway try to increase the DCE-DTE-Speed to 57600, 115200 or higher. 
At the moment you`re using 38400
this may be to slow ;-) (?).

> > AT+MR=0, AT+DR=1, AT+ER=1, and AT+ILRR=0.  Do you know what these
> > settings do?
> >    
According to dvl1262.inf  +DR:=1 enables V44, +ER enables LAPM the 
+ILRR= command
seems to controll DTE-Modem Local Rate Reporting.

Kind Regards
Heino


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