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echo: netcomms
to: david begley
from: Peter Collis
date: 1996-03-04 16:40:44
subject: M34F Status Codes

While listening to david begley Pete heard:M34F Status Codes

G'day david

 db>> I've basically given up trying to connect at 28.8Kbps USRs.
 db>> NetComms are poping up all over the place, anyway.  ;-)

 db> FWIW, "%L11" doesn't help me get 28.8Kbps to David Drummond in
 db> QLD (me in NSW), but "#T9" certainly does the trick.  There's
 db> something in that for all of us, perhaps?

Doesn't do much here but then my lines are fairly clean.

 db> There's a USR in Cowra that I would only get 19.2Kbps
 db> connections to with the default "%L13" - whack in
"#T9" and I
 db> get a 21.6Kbps connection.  Definitely something going on with
 db> the transmit levels of the M34F.

Sure looks like it works, don't tell Austel they might make Netcomm
remove the #T command :-)

 db> One assumes that Austel reckons you should only transmit between
 db> -11dBm and -19dBm, yes?  One makes that assumption since they're
 db> the only documented settings for the M34F.

I think -10dBm is the limit on loudness can't comment on the other
direction.

 db> If so, then would it be the USR "at fault" for not accepting
 db> such connections at a higher speed, or is Telstra proving poor
 db> quality lines?

Not sure here, USR's seem to come into their own on bad lines, they'll
work where others give up and drop the line.

 PC> The M34F is IMHO a good well made modem, A lot more people would
 PC> discover this if they overcame their 
 PC> brought on by the Series 3 debarkle.

 db> Agreed.  There are only two things that (slightly) worry me
 db> about the M34F

 db> (still have a Series 3 M7F in a box here!):

Power user :-) only had an S3 E7 myself.

 db> 1.  Rockwell DSP not Flash upgradeable.  Checked with NetComm,
 db> V.34bis will definitely require a new chipset replacement.

USRobotics seem to have put a lot of R&D into their DSP based modems
so maybe Netcomm didn't have the resources to develop something like
that, i'm assuming the corporate size of USR is far bigger than
Netcomm, Wonder if USRobotics has a marble foyer :-)

 db> Bummer.  No 64-state trellis coding, either.  No real idea what
 db> that means, but Bill Grimsley tells me that it's a "must have".
 db> :-)

I don't know either but it sure sounds good :-)

 db> 2.  The problems Paul Edwards is having with two particular
 db> modems - a V.34 USR Sportster, and a V.32bis (V.32?) Maestro.

I think a lot of Pauls problems are caused by the Qty of his phone
lines.

   -=Pete=-


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