D/40D, D/40E, D/41D, D/41E modem/telephone/ISDN Settings and Configuration

Card Type	Telephony
I/O Options	AEB bus
Data Bus	8-bit ISA
Line Type	Loop-start

CONNECTIONS
Function	Label	Function	Label
Lines 1 & 2	CN1	Analog expansion bus	P3
Lines 3 & 4	CN2

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	IRQ termination enabled	JP7	Open
	IRQ termination disabled	JP7	Closed
»	Board will use internal loop-start interface for input	JP8	Installed
	Board will use T1 interface via AEB bus for input	JP8	Not installed
»	Disabled board will not answer incoming calls	SW1/4	Off
	Disabled board will send busy signal to incoming calls	SW1/4	On
Note: If multiple D/4x cards are installed in a system, JP7 should be closed for only one of them.

BASE I/O ADDRESS
Setting		JP5	JP6
	A000h	Closed	Open
	C000h	Open	Closed
»	D000h	Open	Open

INTERRUPT
Setting		JP1/A	JP1/B	JP1/C	JP1/D	JP1/E	JP1/F
»	IRQ2	Closed	Open	Open	Open	Open	Open
	IRQ3	Open	Closed	Open	Open	Open	Open
	IRQ4	Open	Open	Closed	Open	Open	Open
	IRQ5	Open	Open	Open	Closed	Open	Open
	IRQ6	Open	Open	Open	Open	Closed	Open
	IRQ7	Open	Open	Open	Open	Open	Closed
Note: All D/4xx boards in the system should be set to the same interrupt.

BASE I/O ADDRESS OFFSET (BOARD NUMBER)
Setting		Board Number	SW1/1	SW1/2	SW1/3
»	000h	1	Off	Off	Off
	200h	2	Off	Off	On
	400h	3	Off	On	Off
	600h	4	Off	On	On
	800h	5	On	Off	Off
	A00h	6	On	Off	On
	C00h	7	On	On	Off
	E00h	8	On	On	On