Cisco Systems WIC-1B-U Network Card User Manual


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WIC−1B−U WAN Interface Card
ISDN BRI U Port Pinouts (RJ−45)
The table below lists the ISDN BRI U port pinouts and their function.
8 Pin
1
Function
3
No connection
4
Signal −− Tip or Ring
5
Signal −− Tip or Ring
6
No connection
1
Pins 1, 2, 7, and 8 are not used.
ISDN BRI U WAN Interface Card LEDs
The table below lists the ISDN BRI U WAN interface card LEDs and their meaning.
LED
Meaning
B1
Active connection on B1 channel
B2
Active connection on B2 channel
NT1 NT1 has established a connection with the central office
switch
ISDN BRI Cable Specifications
The table below lists the ISDN BRI cable specifications.
Specification High−capacitance
Cable
Low−Capacitance
Cable
Resistance (at 96
kHz)
160 ohms/km 160 ohms/km
Capacitance (at 1
kHz)
120 nF
1
/km 30 nF/km
Impedance (96
kHz)
75 ohms 150 ohms
Wire diameter
0.024" (0.6 mm) 0.024" (0.6 mm)
Distance 32.8' (10 m) 32.8' (10 m)
Cisco − WIC−1B−S/T and WIC−1B−U WAN Interface Cards Cable Specifications
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