AT&B1&K3
ATZ
38400
1
4
3f8
0

Line 1 is the initialization string.

Line 2 is the shutdown string, which should hang up the line (if dropping
DTR hasn't already) and reset any parameters you like.

Line 3 is the baud rate (default=9600)

Line 4 is the hardware handshaking: 1=on, 0=off (default=1)

Line 5 is the irq number: 0 for default; 2<=irq<=15

Line 6 is the com port number: 0 for defaults
Enter this parameter in hex, **with out** a leading 0x,
e.g. 0x3f8 is entered as 3f8
This parameter overrides the com port selection in setup.

Line 7 is the value to use in the doomcom.extractics variable:
Use 0 for default.