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From: wtm@neoucom.UUCP (Bill Mayhew)
Newsgroups: comp.dcom.modems
Subject: Re: T1000's S110 register?
Summary: T1000 does not do compression (as far as I can determine)
Keywords: modem,telebit
Message-ID: <1887@neoucom.UUCP>
Date: 31 Jan 90 16:01:13 GMT
References: <239@microm.UUCP>
Distribution: usa
Organization: Northeastern Ohio Universities College of Medicine
Lines: 22


As far as I know, there is no way to make a T1000 modem do
compression.  I know that you can set ATS110=1, but if you then do
ATS110? the response is 000.  It is rather telling that AT&n omits
the S110 register on the T1000.

The T1000 also is limited to about 880 char/sec or so no matter
what sort of PEP device is on the other end of the line.  It
appears that when the connection is negotiated with the other end, the
T1000 sets about half of the carriers to 0 bits per carrier.
I don't have a T1000 here to open up, but something tells me that
the computing metal inside is susbstantially less than the 68000
and DSP chip in the Trailblazer Plus or the T2500.

Actually, the system used to make the T1000 compatible with other
PEP modems seems rather clever to me.

For curiosity's sake, anybody care to comment on just what hardware
is inside a T1000?


Bill