This is what I did to get my modem to work...

First my modem is on COM2 in windows. Its a USR 56k FAX internal.

1. pnpdump > /etc/isapnp.conf
2. vi /etc/isapnp.conf
3. removed the # from the settings,

(IO 0 (SIZE 8) (BASE 0x03e8))

and

(INT 0 (IRQ 3 (MODE +E)))

and

(ACT Y)

4. isapnp /etc/isapnp.conf

5. setserial /dev/ttyS2 uart 16550A port 0x03e8 irq 3 spd_vhi

6. set KPPP to look at the device /dev/ttyS2

7. It worked!

8. Lastly, added the lines;

isapnp /etc/isapnp.conf
setserial /dev/ttyS2 uart 16550A port 0x03e8 irq 3 spd_vhi

after the last "fi" in the file /etc/rc.d/rc.local

This is so you don't have to redo these commands each time you have to reboot.

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