Card Type	T1 DSU/CSU
Chip Set	Unidentified
I/O Options	AC power connector, DC power connector, serial port, data port via V.35 connector, network interface via 15-pin connector, injection jack, monitor jack
T1 Transfer Rate	1.536Mbps
T1 Protocol	AMI, B8ZS
Frame type	D4, ESF
Data Bus	External

CONNECTIONS
Function	Label	Function	Label
AC power connector	CN1	Network port via 15-pin connector	CN5
DC power connector	CN2	Injection jack - send	CN6
Data port via V.35 connector	CN3	Monitor jack - receive	CN7
Serial port	CN4	Fuse	F1

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Contiguous bandwidth allocation	S1/6	Off
	Alternate bandwidth allocation	S1/6	On
»	DTE clock set at +SCT	S1/7	Off
	DTE clock set at SCTE	S1/7	On
»	ESF network framing enabled	S2/1	Off
	D4 network framing enabled	S2/1	On
»	B8ZS line code enabled	S2/2	Off
	AMI line code enabled	S2/2	On
»	Internal timing source enabled	S2/5	Off
	Network timing source enabled	S2/5	On
»	Word length 8-bit enabled	S2/11	Off
	Word length 7-bit enabled	S2/11	On
»	DIP switch configuration enabled	S2/12	Off
	Terminal configuration enabled	S2/12	On

DATA RATE TIME SLOTS
Setting		S1/1	S1/2	S1/3	S1/4	S1/5
	1 time slot	Off	Off	Off	Off	On
	2 time slots	Off	Off	Off	On	Off
	3 time slots	Off	Off	Off	On	On
	4 time slots	Off	Off	On	Off	Off
	5 time slots	Off	Off	On	Off	On
	6 time slots	Off	Off	On	On	Off
	7 time slots	Off	Off	On	On	On
	8 time slots	Off	On	Off	Off	Off
	9 time slots	Off	On	Off	Off	On
	10 time slots	Off	On	Off	On	Off
	11 time slots	Off	On	Off	On	On
	12 time slots	Off	On	On	Off	Off
	13 time slots	Off	On	On	Off	On
	14 time slots	Off	On	On	On	Off
	15 time slots	Off	On	On	On	On
	16 time slots	On	Off	Off	Off	Off
	17 time slots	On	Off	Off	Off	On
	18 time slots	On	Off	Off	On	Off
	19 time slots	On	Off	Off	On	On
	20 time slots	On	Off	On	Off	Off
	21 time slots	On	Off	On	Off	On
	22 time slots	On	Off	On	On	Off
	23 time slots	On	Off	On	On	On
»	24 time slots	Off	Off	Off	Off	Off

DATA ENCODING
Setting		S1/8	S1/9
»	Normal encoding	Off	Off
	HDLC encoding	Off	On
	Forced encoding	On	Off

LINE BUILD
Net build		S2/3	S2/4
»	0dB	Off	Off
	-7.5dB	Off	On
	-15dB	On	Off

SERIAL PORT RATE SELECTION
Setting		S2/6	S2/7	S2/8
	1200bps	Off	On	On
	2400bps	Off	On	Off
	4800bps	Off	Off	On
»	9600bps	Off	Off	Off
	19.2Kbps	On	On	Off

SERIAL PORT PARITY SELECTION
Setting		SW2/9	SW2/10
»	None	Off	Off
	Odd	Off	On
	Even	On	Off

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
PWR	Green	On	DSU/CSU power is on and has passed the self test
PWR	Red	On	DSU/CSU power is on; self test failed.
PWR	Yellow	Blinking	DSU/CSU power is on; self test is running
PWR	Yellow	On	DSU/CSU is on; test other than self test is running
PWR	None	Off	Power is off
NET	Green	On	Network connection is good
NET	Red	On	DSU/CSU cannot synchronize to network frame
NET	Red/Green	Blinking	DSU/CSU is detecting a BPV, OOF, or CRC error signal from network
NET	Yellow	On	Yellow or blue alarm condition detected on network
NET	None	Off	Network connection is broken
NLBK	Yellow	On	DSU or CSU loopback initiated by user or management station
NLBK	Yellow	Off	DSU or CSU loopback test not running
ACK	Yellow	On	Remote loop (up or down) detected - Press buttons to run (up) or (down) remote loop test
ACK	Yellow	Off	DSU/CSU remote loop test not running
DTE	Yellow	On	DTE loopback running: Press button to run test
DTE	Yellow	Blinking	DTE loopback running
DTE	Yellow	Off	DTE loopback not running
TD	Green	On	DSU/CSU is detecting pulses from the DTE
TD	Green	Off	DSU/CSU is not detecting pulses from DTE
RD	Green	On	DSU/CSU is receiving pulses from network
RD	Green	Off	DSU/CSU is not receiving pulses from network
RTS	Yellow	On	RTS signal is high
RTS	Yellow	Off	RTS signal is low
CTS	Yellow	On	CTS signal is high
CTS	Yellow	Off	CTS signal is low
DTR	Yellow	On	DTR signal is high
DTR	Yellow	Off	DTR signal is low