Setting modem speed

I’m sorry to say that I’m still on dial-up, but
that’s what I have to live with for now as
broadband is not available at this time.
Additionally, my phone lines are not good. I
typicall connect at 28.8 from home. I bring this
Powerbook to my neighbor’s place and can
connect at 49K. so I have to live with this also.

Here’s the issue: It seems contradictory but
when this thing connects at 31.2K, it feels
slower on the Internet than when it connects at
28.8K. MAybe it has to do with sw
compression, I don’t know, but it is real and
repeatable.

How can I limit the connect speed of the
modem to 28.8K?

PowerBook Firewire (Pismo)
OS 9.2.2
Mac Internal 56K modem

Thank you
– Tony D