> I have a Practical Peripherals
> PM288MT II V.34 external modem.  I
> bought
> the 3com serial cable with the palm
> connector on one end and the 9-pin on
> the other.  I hooked it up to my Palm
> III, hooked the other end to the
> modem with a 9-25 adapter.  When I
> try to modem sync, it says "modem not
> 
If your 9-25 adapter is some kind of standard stuff it really does't work.
 
You need adapter, that propose signals like this:

DB9 (palm serial) = DB25 (modem)
pin2 = pin2
pin3 = pin3
pin5 = pin7
pin6 = pin20
pin7 = pin5
pin8 = pin4

Read more: http://www.palm.com/devzone/hw.html

Regards,
U"lari

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