Card Type	T1 DSU
Chip Set	TI TMS320C51
Processor Type	80376 (exact location is unidentified)
Processor Speed	Unidentified
I/O options	MVIP bus
Maximum Data Rate	1.544Mbps x 2, 64Kbps x 48
Data Bus	16-bit ISA
Data Modulation Protocol	B8ZS

CONNECTIONS
Function	Label	Function	Label
Line 1 out	J1	Audio handset	J3
Line 2 out	J2	MVIP bus	J4

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Factory configured - do not alter	SW2/8	Off
»	Factory configured - do not alter	SW3/8	Off
»	Factory configured - do not alter	P1/E	Open
»	Factory configured - do not alter	P1/F	Open
»	Factory configured - do not alter	P3	Open
»	Factory configured - do not alter	P5	Open

BASE I/O ADDRESS
Setting		S4/1	S4/2	S4/3	S4/4
	200h	On	On	On	Off
»	300h	On	On	On	On
	2200h	On	On	Off	Off
	2300h	On	On	Off	On
	4200h	On	Off	On	Off
	4300h	On	Off	On	On
	6200h	On	Off	Off	Off
	6300h	On	Off	Off	On
	8200h	Off	On	On	Off
	8300h	Off	On	On	On
	A200h	Off	On	Off	Off
	A300h	Off	On	Off	On
	C200h	Off	Off	On	Off
	C300h	Off	Off	On	On
	E200h	Off	Off	Off	Off
	E300h	Off	Off	Off	On

CABLE LENGTH - LINE 1
Setting	S2/1	S2/2	S2/3	S2/4	S2/5	S2/6	S2/7
0’-150’	On	Off	Off	Off	Off	Off	Off
150’-450’	Off	On	Off	On	Off	On	Off
450’-655’	Off	Off	On	Off	On	Off	On

CABLE LENGTH - LINE 2
Setting	S3/1	S3/2	S3/3	S3/4	S3/5	S3/6	S3/7
0’-150’	On	Off	Off	Off	Off	Off	Off
150’-450’	Off	On	Off	On	Off	On	Off
450’-655’	Off	Off	On	Off	On	Off	On

T1 DIRECTION - LINE 1
Setting		P8
»	Normal	Pins 1 & 2, 3 & 4 closed
	Reversed	Pins 1 & 3, 2 & 4 closed

T1 DIRECTION - LINE 2
Setting		P10
»	Normal	Pins 1 & 2, 3 & 4 closed
	Reversed	Pins 1 & 3, 2 & 4 closed

MVIP BUS TERMINATION
Setting		P1/A	P1/B	P1/C	P1/D
»	Terminated	Closed	Closed	Closed	Closed
	Not terminated	Open	Open	Open	Open