Re: [hylafax-users] A4 Page Width On American Fax Machines

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2004.10.25 07:25 Frank Peters wrote:
> After examining the logs for the last 68 faxes sent, all in the US,
> I find that the page width for the receiving fax machine is always
> A4 size:
>
> REMOTE max A4 page width
>
> (except two of the 68 which indicate an A3 max page width)
>
> Are most US machines manufactured with these metric specifications?

Per T.30 specifications, the "page width" (WD) setting can only be A4, 
B4, or A3 (well, there are a couple of others, but they never get used, 
as far as I've ever seen).  All used page sizes must pick one of those 
widths.  So the way that HylaFAX distinguishes between letter page size 
and A4 page size is based on the length.

> Since I always prepare TIFF files for submission to HylaFAX using
> the American Letter size, which is wider than A4, would it be more
> appropriate to use the A4 size instead?

Sure, whatever.  I think that in the case of sizes between A4 and 
letter page widths Ghostscript uses 1728 pixels for all G3/G4 TIFF 
formats.  So in the case of the Ghostscript converters, even if you do 
specify "letter" size, it will format to A4 width anyway, when you use 
a fax TIFF format.

> Letter-size files produce no problems with these machines, and I
> imagine
> that HylaFAX adjusts the width during the actual transmission by
> removing
> a portion of each line.

Actually, Ghostscript does it.

Lee.

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