Re: [hylafax-users] Fax stopped working

[Lee Howard <faxguy@howardsilvan.com>]

On 2003.07.17 23:25 Ross Boylan wrote:

> It worked!

Not surprisingly.

> Though with all the cautions about Class 1, I was a little
> surprised :)

Hrmm... but you were.  To what cautions, exactly, are you referring?  I 
guess you mean the "timing considerations" cautions.  I've found them 
to be unfounded... at least for pentium-class systems with 16 or less 
modems.  An *extremely* busy system or an extremely old (486?) system 
may fare differently.

> It did seem my system became less responsive while the fax was
> transmitting (I deliberately did very little), but none of my high
> priority processes looked as if they were associated with the fax.

Any unresponsiveness was most certainly not fax-related.  If you'd like 
there to be a chance of it being fax-related you'll need to set 
PriorityScheduling in the config.

> Is there anyway to have it adaptively fallback to Class 1 if 2.0
> doesn't work (I gather from some of your charts USR probably doesn't
> do 2, though I haven't checked)?

Long story short, Class 2 and Class 2.0 were competing standards 
proposals, 2.0 being sponsored by USR and 2 being sponsored by 
Rockwell.  Ultimately 2.0 was adopted even after many manufacturers had 
already implemented Class 2 equipment.  So no, we'll likely never see a 
"Class 2" USR.

As for using Class 1 only in fallback scenarios... no.  I'm sure 
there's a way to do it, though, but there's no reason to do it that I 
can think of.
  Lee.

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