Re: [hylafax-users] 4.2.0, topic, always "HDLC frame too short (0 bytes)"

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2004.10.22 09:04 Giulio Orsero wrote:
> Version 4.2.0 + cvs20041001 (I see there are no apparent related
> changes in
> latest cvs)
> Linux rh6x
> Modem topic chipset.
>
> This particular destination (couldn't get make/model) always fails
> with the
> above error, both xonxoff and hardware flow control.
>
> Do you think this is modem related? If you send to that faxno with
> normal
> fax machine the fax goes throuigh.

> Oct 22 18:04:24.81: [10534]: <-- [9:AT+FRH=3\r]
> Oct 22 18:04:24.81: [10534]: <-- <8:41 54 2B 46 52 48 3D 33>
> Oct 22 18:04:24.81: [10534]: <-- <1:0D>
> Oct 22 18:04:25.36: [10534]: --> <11:0D 0A 43 4F 4E 4E 45 43 54 0D 0A>
> Oct 22 18:04:25.36: [10534]: --> [7:CONNECT]
> Oct 22 18:04:27.77: [10534]: --> <8:FD 10 03 0D 0A 4F 4B 0D>
> Oct 22 18:04:27.77: [10534]: --> [3:FD 10 03]
> Oct 22 18:04:27.78: [10534]: --> <1:0A>
> Oct 22 18:04:27.78: [10534]: --> [2:OK]
> Oct 22 18:04:27.78: [10534]: HDLC frame too short (0 bytes)

You could test with another modem to see if it is modem-related.

It looks as if the modem is not detecting the V.21 data until near the 
end of the HDLC frame data, so it's only picking up a few bytes.  
Anything less than 4 bytes will trigger the "HDLC frame too short (0 
bytes)" error message.  It could be a bizarre incompatibility between 
the modulators.

Lee.

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