VARMODEM 2400 modem/telephone/ISDN Settings and Configuration

CONNECTIONS
Purpose	Location	Purpose	Location
Line out	CN1	Volume	SW2
Line in	CN2

BASE I/O ADDRESS SELECTION
Port	J3	J4
» COM1: (3F8h)	Off	Pins 2 & 3 closed
COM2: (2F8h)	On	Pins 2 & 3 closed
COM3: (3E8h)	Off	Pins 1 & 2 closed
COM4: (2E8h)	On	Pins 1 & 2 closed

INTERRUPT SELECTION
IRQ	J5
» 4	Pins 1 & 2 closed
3	Pins 2 & 3 closed

DTR SIGNAL
Setting	SW1/1
» On	DTR forced high
Off	DTR normal

RESULT CODES
Setting	SW1/2
» Off	Verbal result codes enabled
On	Numeric result codes enabled

RESULT CODES DISPLAY
Setting	SW1/3
Off	Display disabled
» On	Display enabled

ECHO COMMANDS DISPLAY
Setting	SW1/4
» Off	Local echo enabled
On	Local echo disabled

AUTO ANSWER
Setting	SW1/5
» On	Modem does not answer on first ring
Off	Modem answers on first ring

CARRIER DETECT
Setting	SW1/6
» Off	CD normal
On	CD forced high

MULTI-LINE INSTALLATION
Setting	SW1/7
» Off	Single phone connected
On	Multiple phones connected

AT COMMAND SET
Setting	SW1/8
» On	AT command set recognized
Off	AT command set disabled

ESCAPE CODE
Setting	SW1/9
» On	Go to command mode and display OK result code when escape character is received
Off	Disconnect, go to command mode and display NO CARRIER when escape character is received

VOLUME CONTROL
Setting	SW1/10
» Off	High volume
On	Low volume