Re: [hylafax-users] Phase D error

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2003.12.18 06:19 Steven Kurylo wrote:
> I changed my Multi Tech MT5634ZPX to class 2.0 and now it sends in 
> 2D-MMR without problems.  However twice a machine tried to send us a 
> fax (we've never received from them before) and a phase D error 
> occured; both log files are below.
>
> Searching the list I only found one other reference to phase D and it 
> suggested getting the newest firmware, which I already have.  An item 
> of note is every received fax has had the following lines it in, 
> although they've all been sucessful other than the two phase D errors.
>
> Dec 18 06:23:35.81: [28470]: MODEM set XON/XOFF/FLUSH: input ignored, 
> output generated
> Dec 18 06:23:35.81: [28470]: RECV: send trigger 022
> Dec 18 06:23:47.60: [28470]: RECV/CQ: Invalid EOL code word, row 0, x 
> 0
> Dec 18 06:23:47.60: [28470]: RECV/CQ: Bad 2D pixel count, row 0, got 
> 0, expected 1728
> Dec 18 06:23:47.60: [28470]: RECV/CQ: Invalid EOL code word, row 1, x 
> 0
> Dec 18 06:23:47.60: [28470]: RECV/CQ: Bad 2D pixel count, row 1, got 
> 0, expected 1728
> Dec 18 06:23:47.60: [28470]: RECV/CQ: Invalid EOL code word, row 2, x 
> 0
> Dec 18 06:23:47.60: [28470]: RECV/CQ: Bad 2D pixel count, row 2, got 
> 0, expected 1728

These lines are a consequence of the pre-4.2.0 decoder not being 
MMR-compatible.  It doesn't matter, however, because in pre-4.2.0 we 
use the modem firmware's decoder to produce the line count.  These 
lines are "fixed" in HylaFAX CVS HEAD (to be 4.2.0).  They're not a 
problem, however.

> Dec 18 06:23:47.60: [28470]: RECV: 14990 bytes of data, 3 total lines
> Dec 18 06:23:47.60: [28470]: MODEM set XON/XOFF/DRAIN: input 
> interpreted, output disabled
>
>
> I don't know if those lines could be a problem or not.

They're not.

> Dec 18 06:23:47.60: [28470]: <-- [7:AT+FDR\r]
> Dec 18 06:23:56.80: [28470]: --> [7:+FHS:A0]
> Dec 18 06:23:56.80: [28470]: REMOTE HANGUP: Unspecified Phase D error 
> (code A0)

> Dec 18 06:16:08.01: [28470]: <-- [7:AT+FDR\r]
> Dec 18 06:16:17.53: [28470]: --> [7:+FHS:A0]
> Dec 18 06:16:17.53: [28470]: REMOTE HANGUP: Unspecified Phase D error 
> (code A0)

In my testing with MultiTechs, +FHS:A0 represents just about any ECM 
protocol error, so this specific problem could be due to a number of 
things.  It most likely represents a flaw in the firmware, and you'll 
need to contact MultiTech for a fix.  If you want MMR/ECM support 
today, well, HylaFAX CVS HEAD now supports these in Class 1.  
Otherwise, you'll need to disable MMR or ECM support in order to work 
around the matter.

Lee.

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