Card Type	ISDN Modem
NIC Type	ISDN
Maximum Onboard Memory	4KB
Boot ROM	Unavailable
Network Transfer Rate	230.4Kbps
Topology	Star
Wiring Type	RJ-45 ISDN BRI
Data Bus	External

CONNECTIONS
Function	Label	Function	Label
25-pin DTE serial port	CN1	RJ-11 analog phone interface	PH1
Power connector	CN2	RJ-11 analog phone interface	PH2
RJ-45 ISDN interface	ISDN

USER CONFIGURABLE SETTINGS
Setting	Label	Position
Resistance set to 100Ohm (connection span >75meters)	SW1	On
Resistance set to 50Ohm (connection span <75meters)	SW1	Off
Note: Switch available on S/T models for Australia only. Termination requirements vary according to the number of devices connected to the NT1, and the distance between devices and NT1.

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
B1	Unidentified	On	B-channel 1 connection is good
B1	Unidentified	Blinking	B-channel 1 connection is being established
B1	Unidentified	Off	B-channel 1 connection is broken
B2	Unidentified	On	B-channel 2 connection is good
B2	Unidentified	Blinking	B-channel 2 connection is being established
B2	Unidentified	Off	B-channel 2 connection is broken
DT	Unidentified	On	ISDN interface is established. Data transmission is possible
DT	Unidentified	Blinking	ISDN interface is initializing or error is occurring. Data transmission is not possible
DT	Unidentified	Off	ISDN interface is not activated
LNK	Unidentified	On	ISDN link is good
LNK	Unidentified	Blinking	ISDN link is synchronizing
LNK	Unidentified	Off	ISDN link is broken (In Europe this indicates idle status)
P1	Unidentified	On	Connection is good on voice channel 1
P1	Unidentified	Blinking	Outgoing or incoming connection is being established on voice channel 1
P1	Unidentified	Off	No activity on voice channel 1
P2	Unidentified	On	Connection is good on voice channel 2
P2	Unidentified	Blinking	Outgoing or incoming connection is being established on voice channel 2
P2	Unidentified	Off	No activity on voice channel 2
TX-RX	Unidentified	Blinking	Data is being transmitted/received on serial port
TX-RX	Unidentified	Off	Data is not being transmitted/received on serial port
DTE	Unidentified	On	Serial port connection is good
DTE	Unidentified	Blinking	Serial port connection is being established
DTE	Unidentified	Off	Serial port connection is broken
FAULT	Unidentified	On	Software fault condition detected
FAULT	Unidentified	Blinking	Hardware fault condition detected
FAULT	Unidentified	Off	ISDN modem is operating normally
PWR	Unidentified	On	Power is on
PWR	Unidentified	Off	Power is off