Cirrus-Logic based modem problems

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Hi,

On Fri, Jan 01, 1999 at 06:49:50PM -0500, Dave Mason wrote:
> > Class 1 is not yet supported.  As for the voice part, sorry, no idea
> > about that one (I only do data/fax).
> 
> Is class 1 better than class 2?  or is it older?

Class 1 is a lot more work for the host program, and has some tricky
timing elements.  It is older as well.

> What is involved in supporting it? 

Reading through about 200 pages of ITU standard T.30, T.4, T.class1

> Are class 1 and 2 documented
> somewhere on the net where I could read about them?

Yes, but without T.30 class 1 is pretty useless (it documents the commands
to send and receive HDLC frames, but not their content).  T.30 can be
purchased from www.itu.ch, for about 50US$ (if I remember correctly).

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de