Cisco 1601 - Router - EN Hardware Installation Manual page 80

ISDN BRI U WAN Interface Cards
ISDN BRI U WICs Overview
The 1-port ISDN BRI U WICs contain an integrated NT1 device. This interface is also known as a
U interface. There are three ISDN BRI U WICs:
You can distinguish between WIC36 and WIC models of an ISDN BRI WIC by the location and labeling
Note
of the LEDs and by the number and location of cutouts in the faceplate.
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•
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Figure 49
Figure 50
Figure 51
OL-12844-01
6
1-port ISDN BRI WIC with integrated NT1 device (WIC36-1B-U) (see
1-port ISDN BRI WIC with integrated NT1 device (WIC-1B-U) (see
1-port ISDN BRI WIC with integrated NT1 device, version 2(WIC-1B-U-V2) (see
WIC36-1B-U Front Panel
BRI U port
LEDs LED
B1
B2
SEE MANUAL BEFORE INSTALLATION
WIC-1B-U Front Panel
BRI U port
SEE MANUAL BEFORE INSTALLATION
WIC-1B-U-V2 Front Panel
BRI U port
SEE MANUAL
BEFORE INSTALLATION
B1 B2 NT1
ISDN BRI U
BRI
U
BRI
U
WIC
1B-U
V2
ISDN BRI WAN Interface Cards
Figure 49)
Figure 50)
Figure 51)