[hylafax-devel] Re: config/usr-2.0

[Dmitry Bely <dbely@mail.ru>]

Lee Howard <faxguy@deanox.com> writes:

> How do I get write access to the CVS?
> 
> Actually, I don't care to have write access, so if it's better that I
> simply post patches and updates here, I will.  Will somebody else apply the
> changes (if approved) to the CVS then, though?
> 
> Anyway, attached to this e-mail is a new config/usr-2.0 file.  The old one
> was broken pretty bad (as evidenced by all the previous trouble with USR
> modems).  The firmware is faulty, in that it reports Copy Quality checking
> when in actuality it doesn't (you go to change it to the options that it
> claims are appropriate, and it ERRORs).  The old usr-2.0 file attempted to
> fix this by setting Class2CQCmd to !(0),(0).

That's not true even for beta 4.1 -- Class2CQQueryCmd is used there.

> This is wrong, however.  It
> should have been setting Class2CQQueryCmd to !(0),(0) and Class2CQCmd to
> "".  (Conceivably, it would have also been functional to use AT+FCQ? as the
> Class2CQQueryCmd (rather than AT_FCQ=?) since it always returns "0,0", but
> I don't know how the parsing works and if the parenthesis are important.

Very bad idea. AT+FCQ? returns current *state* of CQ checking, while
AT+FCQ=? returns possible *range* (what hylafax expects)

> Better to just hardcode it with the !.  This, along with a couple of minor
> changes, has been made to this usr-2.0 file.
> 
> Note that the manpage for config omits Class2CQQueryCmd from the Class2.0
> list.  It's also missing another one... I can't remember which right now.

That's also not true. It's listed under

CLASS 2 AND 2.0 MODEM CONFIGURATION PARAMETERS
    The following parameters are specific to the configuration
    of Class 2- and Class 2.0-style modems:

Class2CQQueryCmd has the same default value both in Class2 and in Class2.0
so it's listed only once (Class2.0 is a "submode" of Class2 from Sam's point
of view).

> This file hasn't had a terribly huge use by me (a few dozen faxes in and a
> few faxes out), but everyone who has asked for a USR config file on
> hylafax-users and who have used mine haven't come back with any trouble
> later... excepting the normal HylaFAX communication bugs that come into
> play with any modem.
> 
> Also, I wanted to second the suggestion that Greg Luck made to add PDF to
> the typerules.  I'd do that, too, if I had CVS writing permissions.
> 
> Thanks.
> Lee Howard

I don't see any difference with the stock config (99% of your Modem* and
Class* parameters are redundant and so should be wiped out).

Alas, no config file can make all USR modems reliably work in Class
2.0. What's why almost all commercial fax software switches them to Class1
mode.

Hope to hear from you soon,
Dmitry


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