Dial up Modem Speed Adjustment

[squareyes]

Hi all,
next weekend I am having a test done on my phone line,
and I have been told I will have to change my modem speed to
19.2 kbs. I setup dial up connection with pppconfig, my question is, is 
there any simple way
to change this speed, or do I need to alter it in pppconfig for this test.?

Many thanks in advance.
Take Care
Winton

Why do round pizzas come in square boxes?