Card Type	Telephony/T1 interface
I/O Options	Daisy-chain connector, PCM bus
T1 Transfer Rate	1.544Mbps
Data Bus	8-bit ISA

CONNECTIONS
Function	Label	Function	Label
CSU connection	CN1	Daisy-chain connector	CN3
PCM bus	CN2	Daughterboard connector	CN4

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Interrupt driver enabled	JP2	Closed
	Interrupt driver disabled	JP2	Open
»	Internal clock source	SW1/4	Off
	Clock source derived from T1 signal	SW1/4	On
»	Normal operation	SW2	Off
	Loopback mode	SW2	On
Note: JP2 should only be closed on one DTI/101 board in the system. All DTI-101 boards installed in the system should be set to the same interrupt.

BASE I/O ADDRESS
Setting		SW1/1	SW1/2	SW1/3
»	320h	Off	Off	Off
	328h	On	Off	Off
	330h	Off	On	Off
	338h	On	On	Off
	3E0h	Off	Off	On
	3E8h	On	Off	On

INTERRUPT
Setting		JP1/A	JP1/B	JP1/C	JP1/D	JP1/E	JP1/F
	IR/FONT>	Open	Open	Open	Open	Open	Closed
»	IRQ3	Closed	Open	Open	Open	Open	Open
	IRQ4	Open	Closed	Open	Open	Open	Open
	IRQ5	Open	Open	Closed	Open	Open	Open
	IRQ6	Open	Open	Open	Closed	Open	Open
	IRQ7	Open	Open	Open	Open	Closed	Open

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
LED1	Red	On	Red alert condition detected
LED1	Red	Off	Red alert condition not detected
LED2	Yellow	On	Yellow alert condition detected
LED2	Yellow	Off	Yellow alert condition not detected
LED3	Green	On	T1 signal is present
LED3	Green	Off	T1 signal not present
LED4	Red	On	Board is in loopback test mode
LED4	Red	Off	Board is not in loopback test mode