[newbie] Modem Problem

[ShaoK14]

I am having a problem trying to dial out using my modem and KPPP. When I hit 
connect it says "Modem Ready". Then after a couple seconds it says "Sorry. 
The modem does not respond." My modem is an ISA PnP modem on TTYS01 at irq3. 
It is not a winmodem. What's going on and how can I fix it? Thanks