Re: [hylafax-users] HDLC frame too short

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2003.10.08 17:44 Adam Fox wrote:

> Oct 09 10:23:12.98: [ 7679]: DIAL 571XXXX
> Oct 09 10:23:12.98: [ 7679]: <-- [13:ATDT1571XXXX\r]
> Oct 09 10:23:28.97: [ 7679]: --> [7:CONNECT]
> Oct 09 10:23:28.97: [ 7679]: MODEM input buffering disabled
> Oct 09 10:23:30.33: [ 7679]: --> [20:7F 03 20 00 00 11 00 00 48 00 78
> 00 00
> 02 01 00 3F 4F 10 03]
> Oct 09 10:23:30.33: [ 7679]: --> [2:OK]
> Oct 09 10:23:30.33: [ 7679]: HDLC frame too short (0 bytes)

Or, in reversed bit-order, that is:

<FE C0 04 00 00 88 00 00 12 00 1E 00 00 40 80 00 FC F2>

This is the NSF frame and probably represents a Canon fax machine (00 
00 88 => 00 00 11).

The reason the frame came up "too short" as "0 bytes" was because the 
initial flag, "FF", was never found.  I.e., the remote appears to send 
0xFE rather than 0xFF.  Does this happen with all destinations you send 
to, or only this one?  What kind of modem are you using?

> Oct 09 10:23:30.33: [ 7679]: DELAY 200 ms
> Oct 09 10:23:30.52: [ 7679]: <-- [9:AT+FRH=3\r]
> Oct 09 10:23:30.59: [ 7679]: --> [7:CONNECT]
> Oct 09 10:23:31.03: [ 7679]: --> [20:7F 03 40 35 38 32 32 31 35 39 34
> 36 20
> 20 20 20 20 20 20 14]
> Oct 09 10:23:31.03: [ 7679]: --> [2:10 03]
> Oct 09 10:23:31.03: [ 7679]: --> [2:OK]
> Oct 09 10:23:31.03: [ 7679]: HDLC frame too short (0 bytes)

This is the CSI frame... same problem here.

> Oct 09 10:23:31.03: [ 7679]: DELAY 200 ms
> Oct 09 10:23:31.22: [ 7679]: <-- [9:AT+FRH=3\r]
> Oct 09 10:23:31.29: [ 7679]: --> [7:CONNECT]
> Oct 09 10:23:31.51: [ 7679]: --> [17:7F 13 00 20 6E 78 44 00 15 00 00
> 00 20
> 66 43 10 03]
> Oct 09 10:23:31.51: [ 7679]: --> [2:OK]
> Oct 09 10:23:31.51: [ 7679]: HDLC frame too short (0 bytes)

This is the DIS frame... same problem.

> Oct 09 10:23:31.51: [ 7679]: DELAY 200 ms
> Oct 09 10:23:31.70: [ 7679]: <-- [9:AT+FRH=3\r]
> Oct 09 10:23:34.73: [ 7679]: --> [7:CONNECT]
> Oct 09 10:23:36.25: [ 7679]: --> [20:7F 03 20 00 00 11 00 00 48 00 78
> 00 00
> 02 01 00 3F 4F 10 03]
> Oct 09 10:23:36.25: [ 7679]: --> [2:OK]
> Oct 09 10:23:36.25: [ 7679]: HDLC frame too short (0 bytes)

And then it starts all over with the NSF frame... and goes like that 
from here...

Lee.

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