motorola 3400 28.8 and receiving faxes (NOT)

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    To:  sam@cthulhu.engr.sgi.com
    Subject:  Re: motorola 3400 28.8 and receiving faxes (NOT)
    Cc:  ian@bilstone.co.uk, mgetty@muc.de
    Date: Fri, 01 Dec 1995 08:49:16 +0100
    From:  gert@greenie.muc.de (Gert Doering)

    Hi,
    
    Sam Leffler wrote:
    >     > > 11/20 20:43:35 S1  got: [0d]
    >     > > 11/20 20:43:35 S1  CND: RING[0a][0d][0a]FAX
    >     > > 11/20 20:43:36 S1  found action string: ``FAX''
    >     > > 11/20 20:43:36 S1  action is A_FAX, start fax receiver...
    >     > > 11/20 20:43:36 S1  fax receiver: entry
    >     > > 11/20 20:43:36 S1  fax_wait_for(OK)
    >     > > 11/20 20:43:36 S1  got:[0d][0a][0d][0a]CONNECT[0d]
    [..]
    > Sorry, I have a bit of trouble reading the logs, but according to the
    > spec sheet this is a Class 1 modem--which is probably why mgetty does
    > not work with it...
    
    Yes, you're right, mgetty doesn't support Class 1, but as far as I know,
    they cannot do adaptive answer, so why does it say "FAX" here???
    
I can't speak for the 3400 model but the Lifestyle 28.8 definitely
supports adaptive answer (and quite well at that).  I now see what
the log is saying and it is what one would expect for a Class 1 modem:

	<-- ATA
	--> FAX
	--> CONNECT

This is the start of a Class 1 receive session; the HDLC frames follow
the connect.  BTW, to answer a data call using adaptive answer it's
a bit tricky; you need to send ATO and then wait for a CONNECT response.
As far as I know this handshake is unique to Motorola modems.

        Sam