Help: Slow ppp connection with USR Robitics Sport 28.8

Help: Slow ppp connection with USR Robitics Sport 28.8

Post by Brad Brow » Sat, 07 Sep 1996 04:00:00



If anyone has connect with the internet using pppd and
some kind of modem program, etc. chat, minicom, ..., please
send me your current modem settings.  

I can get a IP # but all my transfers are slow.  I think
this might be because my modem is not setup properly.  I
you have any other ideas, please let me know.

Thanks,

 
 
 

Help: Slow ppp connection with USR Robitics Sport 28.8

Post by Subhas Ro » Sat, 07 Sep 1996 04:00:00



> If anyone has connect with the internet using pppd and
> some kind of modem program, etc. chat, minicom, ..., please
> send me your current modem settings.

> I can get a IP # but all my transfers are slow.  I think
> this might be because my modem is not setup properly.  I
> you have any other ideas, please let me know.

For my USR sportster external I use the
following modem init string:

  "AT&F1&A3&B1&C1&D2&I0&H1&R2&K3&M4&S0&S1S0=0S13=1X4E1Q0V1"

It might help. My modem gives good speed.

> Thanks,


--


 
 
 

Help: Slow ppp connection with USR Robitics Sport 28.8

Post by Subhas Ro » Sat, 07 Sep 1996 04:00:00



> If anyone has connect with the internet using pppd and
> some kind of modem program, etc. chat, minicom, ..., please
> send me your current modem settings.

> I can get a IP # but all my transfers are slow.  I think
> this might be because my modem is not setup properly.  I
> you have any other ideas, please let me know.

I am running kernel 2.0.x on Red Hat 3.0.3. My modem is
USR Sportster 28.8/33.6 external. I get good modem
performance with this setup.

The following pieces (only the relevant parts)
are taken from my /usr/sbin/ppp-on script.

MODEMINIT="AT&F1&A3&B1&C1&D2&I0&H1&R2&K3&M4&S0&S1S0=0S13=1X4E1Q0V1"
MODEMSPEED="115200"
MRUVAL="1500"
DEVICE="cua1"

/bin/setserial -v /dev/$DEVICE spd_vhi

{
/bin/stty $MODEMSPEED -tostop

if /usr/sbin/chat -v ABORT "NO CARRIER" ABORT BUSY "" \
      ATZ OK $MODEMINIT OK ATDT$PHONE CONNECT "" \
      $LOGINPROMPT $USER $PASSPROMPT \\q$PASSWORD
   then
    /usr/sbin/pppd asyncmap 0 -detach modem crtscts \
     defaultroute noipdefault mru $MRUVAL /dev/$DEVICE $MODEMSPEED
        exit 0
    else
        echo "PPP call failed" 1>&2
        exit 1
    fi
) < /dev/$DEVICE > /dev/$DEVICE

> Thanks,


--

 
 
 

Help: Slow ppp connection with USR Robitics Sport 28.8

Post by Alan Wils » Mon, 09 Sep 1996 04:00:00


:
: I can get a IP # but all my transfers are slow.  I think
: this might be because my modem is not setup properly.  I
: you have any other ideas, please let me know.

If your modem is a Sportster -- relatively new -- and the date on the
eprom is something like 2/13/96, you need a new eprom from USR...
try ATI7 to see
:

 
 
 

Help: Slow ppp connection with USR Robitics Sport 28.8

Post by Craig Ear » Mon, 09 Sep 1996 04:00:00




>:
>: I can get a IP # but all my transfers are slow.  I think
>: this might be because my modem is not setup properly.  I
>: you have any other ideas, please let me know.
>If your modem is a Sportster -- relatively new -- and the date on the
>eprom is something like 2/13/96, you need a new eprom from USR...
>try ATI7 to see
>:

It could also be that you ISP, like many, uses Haye Optima Modems, it
is a documented problem that USR Sportsters don't talk well with Hayes
Optimas, check this by calling your ISP to see what they are running.
I am using USR 28.8 Sportster right now, I have found it exceptionally
sensitive to line noise when trying to hook at the highest speed with
my ISP (using Optimas). I throttle it back to 19200 most of the time.

Craig

 
 
 

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Correction to the message above, its a Courier Dual Standard
instead of a USR Sport

If anyone has connect with the internet using pppd and
some kind of modem program, etc. chat, minicom, ..., please
send me your current modem settings.

I can get a IP # but all my transfers are slow.  I think
this might be because my modem is not setup properly.  I
you have any other ideas, please let me know.

 Thanks,

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