G'day Deon!



 -=> In a message on 24 Jan 96 <=-

 -=> Dave Hatch said this to Deon Attard <=-



 DA>>> Netcomm m34f, it'll normally connect at 26400 if the lines arn't

 DA>>> real good and then train its way up.

 

 DH>> Sounds about right.   The Rockwell set has the capability of

 DH>> specifying something I'd term "aggressiveness" in
line speed selection

 DH>> - good idea, and works a beauty.

 

 DA> Any idea what the command/s register is to enable the
"aggression" :-)  

 DA> Sounds like an experiment to me..



 DH> On the Netcomm, the hardware's there.  They do their own software, so

 DH> it probably will take a bit of poking about to find what they call it,

 DH> or if they've implemented the manual adjust feature. 



 DH> On my Hayes v34, it's in S108, labeled Signal Quality Select, range of

 DH> 0 - 3, with 0 putting up with anything, and 3 demanding perfection on

 DH> pain of instant train down to the next lower speed.   That's what the

 DH> manual sez.  The practice is a bit gentler - under some circumstances

 DH> you can't see the effect at all.  You need a noisy line, under some

 DH> pretty precise ranges of "noisy" before it is an
effective tool, IMHO. 



 DH> Still - try.  Nothing to loose.  Snoop in the Netcomm online manual,

 DH> and see if any of the descriptions match this function, and play, if

 DH> they do. 



The NetComm equivalent to the Hayes Signal Quality Select (S108), which Dave

mentioned, is the EQM.  The Eye Quality Monitor (EQM) doesn't really set the

"aggressiveness", it specifies how *tolerant* the modem is of bad lines.



The EQM is handled by two S registers: S45 (=098) for V.22 and V/22bis

connections, and S33 (=003) for V.32, V.32bis, V.FC and V.34 connections.

I find that the S33 value is far too low so I use S33=120.



The only real way to control how aggressively the M34F seeks a particular

speed is to use the "!" suffix to the "B" command. 
(NOT a good idea IMHO)



eg  B15!   will cause the M34F to disconnect if it can't maintain 14400 bps

    B22!   will cause the M34F to disconnect if it can't maintain 28800 bps





BFN

  _

 (_`

 ._)teve







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... I tried an internal modem, but it hurt when I walked.

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