* Reply to msg in NETCOMM_SUPPORT

(Yes Bill, I know what you think of Lewin - but so far nobody's been able
to disprove anything he's said in relation to this M34F-to-USR thing.)

On Feb 10, 1996 at 11:53, Lewin Edwards of 3:634/396 wrote:

 db>> NetComm, and he has tried the latest for his USR, too.  I'm
using AT&F.
 db>> with the following mods:
[...]
 LE> Disable MNP10 with #K0. Also, USR support advised me to turn off V.42 and
 LE> V.42bis at the Rockwell end as they say the most usual problem is failure
 LE> in V.42/b negotiation phase.

The disabling of V.42 and V.42bis sounds sus' to me (actually, so does MNP
Class 10), but what the hell - tried all three and it didn't make a scrap
of difference to the connection rate.

 db>> Do all M34F's have the same datapump?  I keep hearing about
"old" and
 LE>
 LE> Nope. In approx. Feb 1995, Rockwell released the R6682-26 (DSP code
 LE> 05BA). Type AT#V0I6 on your M34F and you'll see a dump which includes a
 LE> line something like "Rockwell Controller Revision" and a
4-digit hex
 LE> number in quotes. "04BC" is the old R6682-21,
"05BA" is the newer
 LE> R6682-26.

Bill - I have the new Rockwell datapump (bought last year, around July 1995):

    Rockwell Controller Revision EA3C 5536 9F93 B2AF 0E "05BA"
    Rockwell DSP Revision 05 A Checksums: 02C0 46EE 26E4 3638
    00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15
    ?? C8 80 18 E0 08 00 80 00 20 00 00 00 02 00 00 ?? 00 84 90 00 70
    00 00 28 28 00 00 1E 02 08 08

 LE> NetComm had huge stocks of the -21, and were continuing to ship -21
 LE> modems for a long time after the -26 became available. Ask Maestro, Zoom,
 LE> Boca, GVC, Zoltrix, Askey, and a dozen other people with vested
 LE> interests, and you'll hear an official statement "The only technical
 LE> difference, to our knowledge, is improved cellular protocol support".
 LE> This is garbage, as the observable results are that there are several
 LE> internal DSP code bugfixes. The -26 is far more stable than the -21.

From the above dump, I definitely have the -26 in my M34F.

    - dave
    d.begley{at}ieee.org

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