• Subject: RE: SLIP Connection and KFLEX modems
  • From: Neil Palmer <npalmer@xxxxxxxxxxx>
  • Date: Fri, 17 Jul 1998 17:23:09 -0500

Sorry, I was referring to SYNCHRONOUS modem connections, where the value
you enter for LINESPEED definitely makes no difference to the connection
speed (you can connect at 19200 when it's set to 2400).  I've not
checked an AS/400 modem on the V.24 port in Async mode to see if it
makes any difference or not.

Neil Palmer                                AS/400~~~~~      
NxTrend Technology - Canada   ____________          ___  ~     
Thornhill, Ontario,  Canada   |OOOOOOOOOO| ________  o|__||=   
Phone: (905) 731-9000  x238   |__________|_|______|_|______)   
Cell.: (416) 565-1682  x238    oo      oo   oo  oo   OOOo=o\   
Fax:   (905) 731-9202       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
mailto:NPalmer@NxTrend.com    AS/400  The Ultimate Business Server      

> -----Original Message-----
> From: Tim McCarthy [SMTP:twmac@mindspring.com]
> Sent: Friday, July 17, 1998 12:44 PM
> To:   MIDRANGE-L@midrange.com
> Subject:      RE: SLIP Connection and KFLEX modems
> At 12:42 PM 7/17/98 -0600, you wrote:
> >I believe the only time the linespeed is used is so performance tools
> >can calculate the line utilization percentage.
> >Apart from that, as you say it's just a comment.
> >
> Not true. The line speed on the line description on V24 ports DOES
> limit
> and control the transfer rate. You can test this out by setting your
> modem
> speed to follow DTE (most defaults do this) and you'll notice the
> connect
> speed change if you adjust the AS400 line speed (again assuming your
> modem
> is not set to return a fixed connect rate). This was an important
> setting
> prior to RISC where the only flow control settings available for async
> data
> transfers was XON/XOFF. In these cases you had to watch for matching
> DTE/DCE speed settings or risk modem buffer overflow where you'd lose
> data.  
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