[Duo2400] Re: USR 56k Sportster external modem problem

[Art Rice]

On my USR 56k Sportster, the dipswitches 1,3,5,8 are
down for the Mac. When I use it on my PC, dipswitches
3,5,8 are down. There is also special wiring in the
cable I made for the Mac to ensure hardware
handshaking. You can use a standard Mac serial cable,
but then you have to specify software handshaking in
the PPP setup. The initialization string was specified
by USR for the modem also.
So I guess I was lucky to have purchased a USR modem
for my PC that happens to also work with my Mac.

Art in Silicon Valley

--- Gregg Eshelman <g_alan_e at yahoo.com> wrote:
> --- Josh Keady <joshkeady at msn.com> wrote:
> > Check the dipswitches on the rear of the thing. 
> The
> > PC and Mac comm 
> > settings are different.  I THINK that's the only
> > real difference 
> > between the two (besides the label.)  My 56k isn't
> > here right now, but 
> > if someone else could post the dipswitch settings
> > from the back of 
> > their working USR, that should do it.
> 
> The two USR modems I have that don't grok Mac don't
> have DIP switches or any other switches to alter the
> comm settings. The 33.6 just has a power switch and
> a volume rocker. The 56K has Power, volume up/down,
> mute and speaker.
> 
> They could be made Mac compatable with a firmware
> change, USR just doesn't want to do it. They'd
> rather people bought more expensive Mac modems. :P
> 
> I have an older USR Sportster 33.6 with DIP switches
> and it works great with a Mac.
> 


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