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echo: aust_modem
to: Bill Grimsley
from: Simon Byrnand
date: 1997-01-01 17:43:26
subject: Re: Specifics on modem retraining

Once apon a time Bill Grimsley said, 'Re: Specifics on modem retraining' to
Simon Byrnand...



 BG> The issue has become somewhat clouded too, due to some modems having

 BG> separate settings for enabling speed-shifting, as distinct from full

 BG> retrains.



Yup. I am also now playing around with a 33.6K Dynalink USR Sportster

clone, and on the ATI6 screen it always reports "Fallback Disabled". What

is this fallback, is it related to speedshifting? How can it be enabled,

and is it desirable to do so?



The manual, as always, doesnt say much of value.



Another point, I've heard a lot about a bug in the V42bis compression (?)

which is supposed to cause large delays under certain circumstances, but

I cant seem to provoke these symptoms at all, after using it on both BBS

work, and dialup internet for more than a week. In other words, it seems

to be working fine. Is it possible this specimen has later version firmware

that fixes the bug?



Here is an ATI7 dump:



ati7

Configuration Profile...



Product type           US/Canada Internal

Options                V32bis,V.FC,V.34+

Fax Options            Class 1/Class 2.0

Clock Freq             92.0Mhz

Eprom                  256k

Ram                    64k



EPROM date             8/13/96

DSP date               8/13/96



EPROM rev              2.51

DSP rev                2.51



OK



Also, do you know where I might find some technical information on the

significance of the various stats on the undocumented ATI11 screen?



Regards,

Simon



... C:\WINDOWS>DEL *.* - I feel better now!

--- FMail/386 1.02
* Origin: ThunderBaud BBS, Whangarei, NZ, 28k8, 64-9-438-2416 (3:772/1230)
SEEN-BY: 50/99 620/243 623/630 681 640/201 820 711/401 410 413 430 808 809
SEEN-BY: 711/899 932 934 712/311 407 505 506 515 517 624 628 704 824 841 888
SEEN-BY: 713/317 714/906 771/4020 772/1 10 20 30 40 90 135 140 190 205 235
SEEN-BY: 772/240 380 460 1230 774/605 800/1
@PATH: 772/1230 235 1 20 712/624 711/808 934

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