Re: [hylafax-users] hylalax can ot negotiate MPS

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Rance Hall wrote:

> The documentation spent all of 5 sentences (that I found) explaining 
> what the 5 different class options were, but it didnt seem to explain 
> the consequences of a particular choice, and I innoncently figured 
> that a newer protocol must mean more options.


I presume that you mean the documentation that pops up in faxaddmodem.  
Prior to that addition (which I think occurred in 4.2.0) virtually all 
new users were selecting Class 2/2.0/2.1 over 1/1.0.  So that 
documentation did get us somewhere.

The booby-trap here was something that was built-in to the naming 
conventions by the CCITT/ITU.  Class 2 is actually *older* (as far as 
the final release specification) goes than is Class 1.  I prefer to 
thinking of them in terms of "First Class" and "Second Class", and I 
think that's a bit more accurate.

The downside to telling everyone to use Class 1 is that in some cases 
Class 2/2.0/2.1 is actually going to be a better choice for some... due 
to paritculars about their modem or about their setup.

Lee.

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