Card Type	DSU/CSU
NIC Type	T1
Chip Set	Unidentified
I/O Options	DTE ports (5), network interface via RJ-45, modem port test jacks (6), power jack, auxiliary port, communications port
Maximum Modem Rate	2400bps
Data Modulation Protocol	V.22
Wiring Type	RJ-48 120ohm shielded twisted pair
Maximum Data Rate	56Kbps (64Kbps full duplex)
Data Bus	External

CONNECTIONS
Function	Label	Function	Label
Test jack - line in	CN1	Modem port via RJ-11	CN10
Test jack - line in	CN2	DTE port (15-pin connector)	CN11
Test jack - line in	CN3	Network interface via RJ-45 connector	CN12
Test jack - line out	CN4	15-pin clock port	CN13
Test jack - line out	CN5	DTE port 1 (25-pin serial connector)	CN14
Test jack - line out	CN6	DTE port 2 (25-pin serial connector)	CN15
Power Jack	CN7	DTE port 3 (25-pin serial connector)	CN16
Auxiliary port	CN8	DTE port 4 (25-pin serial connector)	CN17
Communications port	CN9

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
OK	Green	On	DSU/CSU power is on
OK	Green	Blinking	DSU/CSU is downloading software
OK	Green	Off	DSU/CSU power is off or detecting a system failure
FAIL	Yellow	On	Error has been detected on network
FAIL	Yellow	Off	Error has not been detected on network
FAIL	Yellow	Blinking	DSU/CSU is conducting a self test
TST	Yellow	On	DSU/CSU is executing a test
TST	Yellow	Off	DSU/CSU is not executing a test
SIG	Green	On	DSU/CSU is receiving a recoverable signal from network
SIG	Green	Off	DSU/CSU cannot recover the signal from network
OOF	Yellow	On	Out of frame condition detected on network
OOF	Yellow	Off	Out of frame condition not detected on network
ALM	Yellow	On	Alarm condition detected on network
ALM	Yellow	Off	Alarm condition not detected on network
EER	Yellow	On	Excessive error rate exceeded on network
EER	Yellow	Off	Excessive error rate not exceeded on network

DTE DROP/INSERT AND DATA PORT LED(S)
LED	Color	Status	DTE drop/insert port	Data port
LED1	Green	On	A recoverable signal is being received from network	DTR signal is high
LED1	Green	Off	DSU/CSU cannot recover the signal from network	DTR signal is low
LED2	Yellow	On	Out of frame condition detected on network	Receiving all zeros from the DTE
LED2	Yellow	Off	Out of frame condition not detected on network	Receiving all ones from the DTE
LED2	Yellow	Blinking	N/A	Data is being transferred
LED3	Yellow	On	Alarm condition detected on network	Transmitting all zeros from the DTE
LED3	Yellow	Off	Alarm condition not detected on network	Transmitting all ones from the DTE
LED3	Yellow	Blinking	N/A	Data is being transferred
LED4	Yellow	On	A pulse density violation was detected (and corrected) on network	CTS signal is high
LED4	Yellow	Off	A pulse density violation was not detected on network	CTS signal is low
LED5	Yellow	On	A bipolar violation was detected (and corrected) on network	RTS signal is high
LED5	Yellow	Off	A bipolar violation was not detected on network	RTS signal is low