Problem Accessing Phone Modem

[David Baron <d_baron@012.net.il>]

On a Sid system after upgrading to a newer MB, neither minicom nor my 
speakerphone plasma applet can access my modem (older analog Rockwell chip), 
tried both my old ISA and a newer PCI card, same result.

I am letting BIOS setup use the default or normal options for the serial 
ports. There are two on board.

Here are the setserial infos. 

~$ setserial /dev/ttyS0
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
~$ setserial /dev/ttyS1
/dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3
~$ setserial /dev/ttyS2
/dev/ttyS2, UART: 16550A, Port: 0x03e8, IRQ: 12
~$ setserial /dev/ttyS3
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3

lshal show the modem on ttyS2 with IRQ 12!

I am in the "dialout" group assigned by udev to these nodes.

How might I solve this?